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stmt |
bran |
cond |
sub |
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time |
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package Pg::Reindex; |
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21299
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use Exporter qw/import/; |
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@ISA = qw(Exporter); |
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@EXPORT_OK = qw(prepare rebuild); |
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use 5.010001; |
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use strict; |
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use warnings; |
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use DBI; |
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0
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use DBD::Pg qw/:async/; |
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use AnyEvent; |
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use POSIX qw/SIGTERM SIGINT SIG_BLOCK SIG_UNBLOCK/; |
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use Getopt::Long; |
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use Pod::Usage; |
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use Time::HiRes (); |
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our ( $dbh, $opt_dryrun, $opt_throttle_on, $opt_throttle_off ); |
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our $VERSION = '0.01'; |
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sub lg { |
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return print localtime() . ": ", @_; |
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} |
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sub query { |
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my ( $descr, @param ) = @_; |
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my $sql = pop @param; |
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# warn $sql; |
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my $tm = Time::HiRes::time; |
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my $stmt |
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= ref $sql ? $sql : $dbh->prepare( $sql, { pg_async => PG_ASYNC } ); |
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my $done = AE::cv; |
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my $cancel = sub { |
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$dbh->pg_cancel if $dbh->{pg_async_status} == 1; |
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$done->send; |
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}; |
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my $pg_w = AE::io $dbh->{pg_socket}, 0, sub { |
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$dbh->pg_ready and $done->send; |
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}; |
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45
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my $sigblock = POSIX::SigSet->new( SIGTERM, SIGINT ); |
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POSIX::sigprocmask SIG_BLOCK, $sigblock; |
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my @sig_w = map { AE::signal $_, $cancel } qw/TERM INT/; |
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$stmt->execute(@param); |
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POSIX::sigprocmask SIG_UNBLOCK, $sigblock; |
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51
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$done->wait; |
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53
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die "query cancelled\n" unless $dbh->{pg_async_status} == 1; |
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55
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my $rc = $dbh->pg_result; |
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my $result = $stmt->{Active} ? $stmt->fetchall_arrayref : undef; |
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58
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lg sprintf "$descr took %.3f s\n", ( Time::HiRes::time- $tm ) if $descr; |
59
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60
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return wantarray ? ( $rc, $result ) : $result; |
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} |
62
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63
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sub wquery { ## no critic |
64
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goto \&query unless $opt_dryrun; |
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66
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my ( $descr, @param ) = @_; |
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my $sql = pop @param; |
68
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69
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my $n = 1; |
70
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$sql =~ s/\?/'$'.$n++/ge; |
71
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$sql =~ s/\$(\d+)/$dbh->quote($param[$1-1])/ge; |
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73
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print "$sql;\n"; |
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75
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return 1; |
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} |
77
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78
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sub throttle { |
79
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return if $opt_dryrun; |
80
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state $q = $dbh->prepare( <<'SQL', { pg_async => PG_ASYNC } ); |
81
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SELECT coalesce(max(pg_xlog_location_diff(pg_current_xlog_location(), r.flush_location)), 0) |
82
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FROM pg_stat_replication r |
83
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SQL |
84
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85
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my ($xlog_diff) = @{ query( '', $q )->[0] }; |
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87
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if ( $xlog_diff > $opt_throttle_on ) { |
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lg "streaming lag = $xlog_diff ==> pausing\n"; |
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LOOP: { |
90
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do { |
91
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select undef, undef, undef, 1; ## no critic |
92
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($xlog_diff) = @{ query( '', $q )->[0] }; |
93
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} while ( $xlog_diff > $opt_throttle_off ); |
94
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95
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# sleep for another 30 sec and check every second the lag. |
96
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# sometimes the wal sender process disconnects and reconnects |
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# a moment later. In that case we may have fallen below the |
98
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# throttle limit simply because we checked at the wrong time. |
99
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for ( my $i = 0; $i < 30; $i++ ) { |
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select undef, undef, undef, 1; ## no critic |
101
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($xlog_diff) = @{ query( '', $q )->[0] }; |
102
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redo LOOP if $xlog_diff > $opt_throttle_off; |
103
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} |
104
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} |
105
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lg "streaming lag = $xlog_diff -- continuing\n"; |
106
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} |
107
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return; |
108
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} |
109
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110
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sub next_index { |
111
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my @list = query '', <<'SQL'; |
112
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WITH wl AS ( |
113
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UPDATE reindex.worklist |
114
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SET status='in progress' |
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WHERE idx=(SELECT idx |
116
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FROM reindex.worklist |
117
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WHERE status<>'done' |
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ORDER BY ord |
119
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LIMIT 1) |
120
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RETURNING idx |
121
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) |
122
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SELECT c.oid, n.nspname, quote_ident(n.nspname), c.relname, quote_ident(c.relname), |
123
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pg_catalog.pg_get_indexdef(c.oid) indexdef, |
124
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pg_catalog.pg_relation_size(c.oid::regclass) |
125
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FROM pg_catalog.pg_class c |
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JOIN pg_catalog.pg_namespace n ON c.relnamespace=n.oid |
127
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JOIN wl ON wl.idx=c.oid |
128
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SQL |
129
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130
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return @{ $list[1]->[0] || [] }; |
131
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} |
132
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133
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sub do_transaction { |
134
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my ( $stmt_pointer, $limit, $sub ) = @_; |
135
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136
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LOOP: { |
137
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eval { |
138
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if ($opt_dryrun) { |
139
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wquery '', 'BEGIN ISOLATION LEVEL REPEATABLE READ'; |
140
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} else { |
141
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$dbh->begin_work; |
142
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wquery '', 'SET TRANSACTION ISOLATION LEVEL REPEATABLE READ'; |
143
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} |
144
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145
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$sub->(); |
146
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147
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if ($opt_dryrun) { |
148
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wquery '', 'COMMIT'; |
149
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} else { |
150
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$dbh->commit; |
151
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} |
152
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1; |
153
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} or do { |
154
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my $sqlstate = $dbh->state; |
155
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my $err = $@; |
156
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eval { $dbh->rollback }; ## no critic |
157
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if ( $limit-- ) { |
158
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for my $state (qw/40P01 40001/) |
159
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{ # deadlock detected; serialization failure |
160
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if ( $sqlstate eq $state ) { |
161
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$err = ">>$$stmt_pointer<<\n$err" if $stmt_pointer; |
162
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$err =~ s/\s+$//; |
163
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$err =~ s/\n/\n /g; |
164
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lg |
165
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" SQL state $state ==> retry transaction\n $err\n"; |
166
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redo LOOP; |
167
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} |
168
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} |
169
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} |
170
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die $err; |
171
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}; |
172
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} |
173
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return; |
174
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} |
175
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176
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sub wait_for_concurrent_tx { |
177
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return if $opt_dryrun; |
178
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eval { |
179
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$dbh->begin_work; |
180
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181
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while ( |
182
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!query( '', |
183
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'SELECT txid_current()=txid_snapshot_xmin(txid_current_snapshot())' |
184
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)->[0]->[0] |
185
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) |
186
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{ |
187
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select undef, undef, undef, .5; ## no critic |
188
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} |
189
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190
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$dbh->rollback; |
191
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1; |
192
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} or do { |
193
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my $err = $@; |
194
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eval { $dbh->rollback }; ## no critic |
195
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die $err; |
196
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}; |
197
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return; |
198
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} |
199
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200
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sub reindex { |
201
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my ( $oid, $nspname, $quoted_nspname, $idxname, $quoted_idxname, $idxdef, |
202
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$size, $opt_validate ) |
203
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= @_; |
204
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205
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throttle; # wait for streaming replicas to catch up |
206
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207
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lg "Rebuilding Index $quoted_nspname.$quoted_idxname\n"; |
208
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209
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my @log_id; |
210
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@log_id = query '', $oid, <<'SQL' unless $opt_dryrun; |
211
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INSERT INTO reindex.log(tstmp, nspname, tblname, idxname, sz_before, status) |
212
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SELECT now(), n.nspname, tc.relname, ic.relname, pg_catalog.pg_relation_size(i.indexrelid::regclass), 'started' |
213
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FROM pg_catalog.pg_index i |
214
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JOIN pg_catalog.pg_class ic ON i.indexrelid=ic.oid |
215
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JOIN pg_catalog.pg_class tc ON i.indrelid=tc.oid |
216
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JOIN pg_catalog.pg_namespace n ON ic.relnamespace=n.oid |
217
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WHERE i.indexrelid=$1 |
218
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RETURNING id |
219
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SQL |
220
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221
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my $tmp = '__temp_reidx'; |
222
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$idxdef =~ s/^(CREATE (?:UNIQUE )?INDEX) (\S+)/$1 CONCURRENTLY $tmp/ |
223
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or die "Cannot replace index name in $idxdef\n"; |
224
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|
225
|
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|
my $retry = 5; |
226
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|
my ( @rc, $err ); |
227
|
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|
|
|
|
while ( --$retry > 0 ) { |
228
|
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|
@rc = eval { wquery " CREATE CONCURRENTLY", $idxdef } and last; |
229
|
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|
$err = $@; |
230
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|
eval { |
231
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query "$quoted_nspname.$quoted_idxname creation failed. Dropping", |
232
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qq{DROP INDEX $quoted_nspname.$tmp}; |
233
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|
1; |
234
|
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|
} |
235
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|
|
or warn "While dropping the index: $@"; |
236
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|
} |
237
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238
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|
|
unless ( $rc[0] ) { |
239
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|
chomp $err; |
240
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241
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query '', $log_id[1]->[0]->[0], $err, <<'SQL' unless $opt_dryrun; |
242
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|
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|
UPDATE reindex.log |
243
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|
SET status='failed to create temp index: ' || $2, |
244
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|
tm_taken=now()-tstmp |
245
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|
WHERE id=$1 |
246
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|
SQL |
247
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248
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die "Cannot create index: $err"; |
249
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|
} |
250
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251
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|
my @revalidate; |
252
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|
my $current_cmd; |
253
|
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|
254
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|
eval { |
255
|
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|
do_transaction \$current_cmd, 100, sub { |
256
|
|
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|
|
257
|
|
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|
|
# check if the index still exists |
258
|
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|
|
@rc = query '', $oid, $nspname, $idxname, $current_cmd = <<'SQL'; |
259
|
|
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|
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|
|
SELECT 1 |
260
|
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|
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|
|
FROM pg_catalog.pg_class c |
261
|
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|
JOIN pg_catalog.pg_namespace n ON n.oid=c.relnamespace |
262
|
|
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|
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|
|
WHERE c.oid=$1 |
263
|
|
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|
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|
|
AND c.relkind='i' |
264
|
|
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|
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|
|
AND n.nspname=$2 |
265
|
|
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|
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|
|
AND c.relname=$3 |
266
|
|
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|
|
|
|
SQL |
267
|
|
|
|
|
|
|
|
268
|
|
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|
|
|
|
if ( $rc[1]->[0]->[0] == 1 ) { |
269
|
|
|
|
|
|
|
unless ($opt_dryrun) { |
270
|
|
|
|
|
|
|
@rc = query '', $log_id[1]->[0]->[0], |
271
|
|
|
|
|
|
|
"$quoted_nspname.$tmp", $current_cmd = <<'SQL'; |
272
|
|
|
|
|
|
|
UPDATE reindex.log |
273
|
|
|
|
|
|
|
SET sz_after=pg_catalog.pg_relation_size($2::regclass) |
274
|
|
|
|
|
|
|
WHERE id=$1 |
275
|
|
|
|
|
|
|
RETURNING sz_after |
276
|
|
|
|
|
|
|
SQL |
277
|
|
|
|
|
|
|
lg sprintf( |
278
|
|
|
|
|
|
|
" size: %d ==> %d (%.2f%%)\n", |
279
|
|
|
|
|
|
|
$size, |
280
|
|
|
|
|
|
|
$rc[1]->[0]->[0], |
281
|
|
|
|
|
|
|
$rc[1]->[0]->[0] * 100 / $size - 100 |
282
|
|
|
|
|
|
|
); |
283
|
|
|
|
|
|
|
} |
284
|
|
|
|
|
|
|
|
285
|
|
|
|
|
|
|
my @trans |
286
|
|
|
|
|
|
|
= ( |
287
|
|
|
|
|
|
|
"ALTER INDEX $quoted_nspname.$tmp RENAME TO $quoted_idxname" |
288
|
|
|
|
|
|
|
); |
289
|
|
|
|
|
|
|
@rc = query '', $oid, <<'SQL'; |
290
|
|
|
|
|
|
|
SELECT con.conname, quote_ident(con.conname), |
291
|
|
|
|
|
|
|
n.nspname, quote_ident(n.nspname), |
292
|
|
|
|
|
|
|
con.contype, |
293
|
|
|
|
|
|
|
pg_get_constraintdef(con.oid), |
294
|
|
|
|
|
|
|
con.conrelid::regclass::text, |
295
|
|
|
|
|
|
|
con.confrelid::regclass::text, |
296
|
|
|
|
|
|
|
con.confmatchtype, |
297
|
|
|
|
|
|
|
key.key, fkey.fkey |
298
|
|
|
|
|
|
|
FROM pg_catalog.pg_constraint con |
299
|
|
|
|
|
|
|
JOIN pg_catalog.pg_namespace n ON n.oid=con.connamespace |
300
|
|
|
|
|
|
|
CROSS JOIN LATERAL (SELECT array_agg(quote_ident(a.attname)) |
301
|
|
|
|
|
|
|
FROM unnest(con.conkey) x(k) JOIN pg_catalog.pg_attribute a |
302
|
|
|
|
|
|
|
ON x.k=a.attnum AND a.attrelid=con.conrelid) key(key) |
303
|
|
|
|
|
|
|
CROSS JOIN LATERAL (SELECT array_agg(quote_ident(a.attname)) |
304
|
|
|
|
|
|
|
FROM unnest(con.confkey) x(k) JOIN pg_catalog.pg_attribute a |
305
|
|
|
|
|
|
|
ON x.k=a.attnum AND a.attrelid=con.confrelid) fkey(fkey) |
306
|
|
|
|
|
|
|
JOIN (VALUES ('p'::TEXT, 1::INT), |
307
|
|
|
|
|
|
|
('u'::TEXT, 2::INT), |
308
|
|
|
|
|
|
|
('f'::TEXT, 3::INT)) ord(type, ord) ON ord.type=con.contype |
309
|
|
|
|
|
|
|
WHERE con.conindid=$1 |
310
|
|
|
|
|
|
|
AND con.contype<>'x' -- exclusion constraints are not yet implemented |
311
|
|
|
|
|
|
|
ORDER BY ord.ord ASC |
312
|
|
|
|
|
|
|
SQL |
313
|
|
|
|
|
|
|
|
314
|
|
|
|
|
|
|
if ( @{ $rc[1] } ) { |
315
|
|
|
|
|
|
|
for my $con ( @{ $rc[1] } ) { |
316
|
|
|
|
|
|
|
my ($conname, $quoted_conname, $nspname, |
317
|
|
|
|
|
|
|
$quoted_nspname, $contype, $condef, |
318
|
|
|
|
|
|
|
$rel, $frel, $matchtype, |
319
|
|
|
|
|
|
|
$key, $fkey |
320
|
|
|
|
|
|
|
) = @$con; |
321
|
|
|
|
|
|
|
if ( $contype eq 'u' ) { |
322
|
|
|
|
|
|
|
unshift @trans, |
323
|
|
|
|
|
|
|
"ALTER TABLE $rel DROP CONSTRAINT $quoted_conname"; |
324
|
|
|
|
|
|
|
push @trans, |
325
|
|
|
|
|
|
|
( |
326
|
|
|
|
|
|
|
"ALTER TABLE $rel ADD CONSTRAINT $quoted_conname " |
327
|
|
|
|
|
|
|
. "UNIQUE USING INDEX $quoted_idxname" ); |
328
|
|
|
|
|
|
|
} elsif ( $contype eq 'p' ) { |
329
|
|
|
|
|
|
|
unshift @trans, |
330
|
|
|
|
|
|
|
"ALTER TABLE $rel DROP CONSTRAINT $quoted_conname"; |
331
|
|
|
|
|
|
|
push @trans, |
332
|
|
|
|
|
|
|
( |
333
|
|
|
|
|
|
|
"ALTER TABLE $rel ADD CONSTRAINT $quoted_conname " |
334
|
|
|
|
|
|
|
. "PRIMARY KEY USING INDEX $quoted_idxname" |
335
|
|
|
|
|
|
|
); |
336
|
|
|
|
|
|
|
} elsif ( $contype eq 'f' ) { |
337
|
|
|
|
|
|
|
unshift @trans, |
338
|
|
|
|
|
|
|
"ALTER TABLE $rel DROP CONSTRAINT $quoted_conname"; |
339
|
|
|
|
|
|
|
push @trans, |
340
|
|
|
|
|
|
|
"ALTER TABLE $rel ADD CONSTRAINT $quoted_conname $condef NOT VALID"; |
341
|
|
|
|
|
|
|
push @revalidate, |
342
|
|
|
|
|
|
|
$con; # needs to be revalidated after commit |
343
|
|
|
|
|
|
|
} elsif ( $contype eq 'x' ) { |
344
|
|
|
|
|
|
|
...; # exclusion constraints are not yet implemented |
345
|
|
|
|
|
|
|
} else { |
346
|
|
|
|
|
|
|
} |
347
|
|
|
|
|
|
|
} |
348
|
|
|
|
|
|
|
} else { |
349
|
|
|
|
|
|
|
unshift @trans, |
350
|
|
|
|
|
|
|
"DROP INDEX $quoted_nspname.$quoted_idxname"; |
351
|
|
|
|
|
|
|
} |
352
|
|
|
|
|
|
|
|
353
|
|
|
|
|
|
|
wquery '', $current_cmd = $_ for (@trans); |
354
|
|
|
|
|
|
|
} else { |
355
|
|
|
|
|
|
|
eval { |
356
|
|
|
|
|
|
|
query |
357
|
|
|
|
|
|
|
"Index $quoted_nspname.$quoted_idxname has vanished. Dropping temporary", |
358
|
|
|
|
|
|
|
qq{DROP INDEX $quoted_nspname.$tmp}; |
359
|
|
|
|
|
|
|
1; |
360
|
|
|
|
|
|
|
} |
361
|
|
|
|
|
|
|
or warn "While dropping the index: $@"; |
362
|
|
|
|
|
|
|
} |
363
|
|
|
|
|
|
|
}; |
364
|
|
|
|
|
|
|
|
365
|
|
|
|
|
|
|
1; |
366
|
|
|
|
|
|
|
} or do { |
367
|
|
|
|
|
|
|
my $err = $@; |
368
|
|
|
|
|
|
|
chomp $err; |
369
|
|
|
|
|
|
|
$err = ">>$current_cmd<<\n$err"; |
370
|
|
|
|
|
|
|
|
371
|
|
|
|
|
|
|
eval { |
372
|
|
|
|
|
|
|
query |
373
|
|
|
|
|
|
|
"Transaction for $quoted_nspname.$quoted_idxname failed. Dropping", |
374
|
|
|
|
|
|
|
qq{DROP INDEX $quoted_nspname.$tmp}; |
375
|
|
|
|
|
|
|
1; |
376
|
|
|
|
|
|
|
} |
377
|
|
|
|
|
|
|
or warn "While dropping the index: $@"; |
378
|
|
|
|
|
|
|
|
379
|
|
|
|
|
|
|
query '', $log_id[1]->[0]->[0], $err, <<'SQL' unless $opt_dryrun; |
380
|
|
|
|
|
|
|
UPDATE reindex.log |
381
|
|
|
|
|
|
|
SET status='failed to rename index or recreate constraints: ' || $2, |
382
|
|
|
|
|
|
|
tm_taken=now()-tstmp |
383
|
|
|
|
|
|
|
WHERE id=$1 |
384
|
|
|
|
|
|
|
SQL |
385
|
|
|
|
|
|
|
|
386
|
|
|
|
|
|
|
die "$err"; |
387
|
|
|
|
|
|
|
}; |
388
|
|
|
|
|
|
|
|
389
|
|
|
|
|
|
|
unless ($opt_validate) { |
390
|
|
|
|
|
|
|
query '', $log_id[1]->[0]->[0], $err, <<'SQL' unless $opt_dryrun; |
391
|
|
|
|
|
|
|
UPDATE reindex.log |
392
|
|
|
|
|
|
|
SET status='done: constraints not validated', |
393
|
|
|
|
|
|
|
tm_taken=now()-tstmp |
394
|
|
|
|
|
|
|
WHERE id=$1 |
395
|
|
|
|
|
|
|
SQL |
396
|
|
|
|
|
|
|
|
397
|
|
|
|
|
|
|
return 1; |
398
|
|
|
|
|
|
|
} |
399
|
|
|
|
|
|
|
|
400
|
|
|
|
|
|
|
wait_for_concurrent_tx; |
401
|
|
|
|
|
|
|
|
402
|
|
|
|
|
|
|
my @not_validated; |
403
|
|
|
|
|
|
|
for my $con (@revalidate) { |
404
|
|
|
|
|
|
|
my ($conname, $quoted_conname, $nspname, $quoted_nspname, |
405
|
|
|
|
|
|
|
$contype, $condef, $rel, $frel, |
406
|
|
|
|
|
|
|
$matchtype, $key, $fkey |
407
|
|
|
|
|
|
|
) = @$con; |
408
|
|
|
|
|
|
|
my $sql; |
409
|
|
|
|
|
|
|
|
410
|
|
|
|
|
|
|
my $join_cond |
411
|
|
|
|
|
|
|
= '(' |
412
|
|
|
|
|
|
|
. join( ', ', map {"b.$_"} @$fkey ) . ')=(' |
413
|
|
|
|
|
|
|
. join( ', ', map {"a.$_"} @$key ) . ')'; |
414
|
|
|
|
|
|
|
my $match = ( |
415
|
|
|
|
|
|
|
$matchtype eq 's' # MATCH SIMPLE |
416
|
|
|
|
|
|
|
? 'AND ' |
417
|
|
|
|
|
|
|
: $matchtype eq 'f' # MATCH FULL |
418
|
|
|
|
|
|
|
? ' OR ' |
419
|
|
|
|
|
|
|
: do {...} |
420
|
|
|
|
|
|
|
); # MATCH PARTIAL not yet implemented by PG |
421
|
|
|
|
|
|
|
$match = join( $match, map {"a.$_ IS NOT NULL"} @$key ); |
422
|
|
|
|
|
|
|
|
423
|
|
|
|
|
|
|
@rc = wquery " Validate FK constraint $quoted_conname on $rel", |
424
|
|
|
|
|
|
|
$rel, $conname, <<"SQL"; |
425
|
|
|
|
|
|
|
UPDATE pg_catalog.pg_constraint |
426
|
|
|
|
|
|
|
SET convalidated = NOT EXISTS(SELECT 1 |
427
|
|
|
|
|
|
|
FROM ONLY $rel a |
428
|
|
|
|
|
|
|
LEFT JOIN ONLY $frel b ON $join_cond |
429
|
|
|
|
|
|
|
WHERE b.$fkey->[0] IS NULL -- inner join failed |
430
|
|
|
|
|
|
|
AND ($match)) |
431
|
|
|
|
|
|
|
WHERE conrelid=\$1::regclass::oid |
432
|
|
|
|
|
|
|
AND conname=\$2 |
433
|
|
|
|
|
|
|
RETURNING convalidated |
434
|
|
|
|
|
|
|
SQL |
435
|
|
|
|
|
|
|
unless ($opt_dryrun) { |
436
|
|
|
|
|
|
|
lg ' ' . ( $rc[1]->[0]->[0] ? '' : 'NOT ' ) . "VALID\n"; |
437
|
|
|
|
|
|
|
push @not_validated, $quoted_conname unless $rc[1]->[0]->[0]; |
438
|
|
|
|
|
|
|
} |
439
|
|
|
|
|
|
|
} |
440
|
|
|
|
|
|
|
|
441
|
|
|
|
|
|
|
unless ($opt_dryrun) { |
442
|
|
|
|
|
|
|
if (@not_validated) { |
443
|
|
|
|
|
|
|
query '', $log_id[1]->[0]->[0], |
444
|
|
|
|
|
|
|
'[' . join( '], [', @not_validated ) . ']', <<'SQL'; |
445
|
|
|
|
|
|
|
UPDATE reindex.log |
446
|
|
|
|
|
|
|
SET status='failed: some constraints could not be validated: ', |
447
|
|
|
|
|
|
|
tm_taken=now()-tstmp |
448
|
|
|
|
|
|
|
WHERE id=$1 |
449
|
|
|
|
|
|
|
SQL |
450
|
|
|
|
|
|
|
} else { |
451
|
|
|
|
|
|
|
query '', $log_id[1]->[0]->[0], <<'SQL'; |
452
|
|
|
|
|
|
|
UPDATE reindex.log |
453
|
|
|
|
|
|
|
SET status='done', |
454
|
|
|
|
|
|
|
tm_taken=now()-tstmp |
455
|
|
|
|
|
|
|
WHERE id=$1 |
456
|
|
|
|
|
|
|
SQL |
457
|
|
|
|
|
|
|
} |
458
|
|
|
|
|
|
|
} |
459
|
|
|
|
|
|
|
|
460
|
|
|
|
|
|
|
return 1; |
461
|
|
|
|
|
|
|
} |
462
|
|
|
|
|
|
|
|
463
|
|
|
|
|
|
|
sub init { |
464
|
|
|
|
|
|
|
|
465
|
|
|
|
|
|
|
} |
466
|
|
|
|
|
|
|
|
467
|
|
|
|
|
|
|
sub prepare { |
468
|
|
|
|
|
|
|
|
469
|
|
|
|
|
|
|
$dbh = shift; |
470
|
|
|
|
|
|
|
my @opt_namespaces = @{ shift @_ }; |
471
|
|
|
|
|
|
|
my @opt_tables = @{ shift @_ }; |
472
|
|
|
|
|
|
|
my @opt_indexes = @{ shift @_ }; |
473
|
|
|
|
|
|
|
|
474
|
|
|
|
|
|
|
my $qual; |
475
|
|
|
|
|
|
|
my @param; |
476
|
|
|
|
|
|
|
|
477
|
|
|
|
|
|
|
query '', 'SET client_min_messages TO WARNING'; |
478
|
|
|
|
|
|
|
|
479
|
|
|
|
|
|
|
query '', 'CREATE SCHEMA IF NOT EXISTS reindex'; |
480
|
|
|
|
|
|
|
|
481
|
|
|
|
|
|
|
query '', <<'SQL'; |
482
|
|
|
|
|
|
|
CREATE TABLE IF NOT EXISTS reindex.log( |
483
|
|
|
|
|
|
|
id BIGSERIAL PRIMARY KEY, |
484
|
|
|
|
|
|
|
tstmp TIMESTAMP, |
485
|
|
|
|
|
|
|
nspname NAME, |
486
|
|
|
|
|
|
|
tblname NAME, |
487
|
|
|
|
|
|
|
idxname NAME, |
488
|
|
|
|
|
|
|
sz_before BIGINT, |
489
|
|
|
|
|
|
|
sz_after BIGINT, |
490
|
|
|
|
|
|
|
status TEXT, |
491
|
|
|
|
|
|
|
tm_taken INTERVAL |
492
|
|
|
|
|
|
|
) |
493
|
|
|
|
|
|
|
SQL |
494
|
|
|
|
|
|
|
|
495
|
|
|
|
|
|
|
query '', <<'SQL'; |
496
|
|
|
|
|
|
|
CREATE UNLOGGED TABLE IF NOT EXISTS reindex.worklist( |
497
|
|
|
|
|
|
|
ord SERIAL, |
498
|
|
|
|
|
|
|
idx OID, |
499
|
|
|
|
|
|
|
status TEXT |
500
|
|
|
|
|
|
|
) |
501
|
|
|
|
|
|
|
SQL |
502
|
|
|
|
|
|
|
|
503
|
|
|
|
|
|
|
if (@opt_namespaces) { |
504
|
|
|
|
|
|
|
$qual .= " AND n.nspname IN (" |
505
|
|
|
|
|
|
|
. join( ', ', ('?') x ( 0 + @opt_namespaces ) ) . ")\n"; |
506
|
|
|
|
|
|
|
push @param, @opt_namespaces; |
507
|
|
|
|
|
|
|
} else { |
508
|
|
|
|
|
|
|
$qual .= <<'SQL'; |
509
|
|
|
|
|
|
|
AND n.nspname !~ '^pg_' |
510
|
|
|
|
|
|
|
AND n.nspname <> 'information_schema' |
511
|
|
|
|
|
|
|
AND n.nspname <> 'reindex' |
512
|
|
|
|
|
|
|
SQL |
513
|
|
|
|
|
|
|
} |
514
|
|
|
|
|
|
|
|
515
|
|
|
|
|
|
|
if (@opt_tables) { |
516
|
|
|
|
|
|
|
$qual .= " AND EXISTS(SELECT 1 |
517
|
|
|
|
|
|
|
FROM pg_catalog.pg_class xc |
518
|
|
|
|
|
|
|
JOIN pg_catalog.pg_index xi ON xc.oid=xi.indrelid |
519
|
|
|
|
|
|
|
WHERE xi.indexrelid=c.oid |
520
|
|
|
|
|
|
|
AND xc.relname IN (" |
521
|
|
|
|
|
|
|
. join( ', ', ('?') x ( 0 + @opt_tables ) ) . "))\n"; |
522
|
|
|
|
|
|
|
push @param, @opt_tables; |
523
|
|
|
|
|
|
|
} |
524
|
|
|
|
|
|
|
|
525
|
|
|
|
|
|
|
if (@opt_indexes) { |
526
|
|
|
|
|
|
|
$qual .= " AND c.relname IN (" |
527
|
|
|
|
|
|
|
. join( ', ', ('?') x ( 0 + @opt_indexes ) ) . ")\n"; |
528
|
|
|
|
|
|
|
push @param, @opt_indexes; |
529
|
|
|
|
|
|
|
} |
530
|
|
|
|
|
|
|
|
531
|
|
|
|
|
|
|
query '', 'TRUNCATE reindex.worklist'; |
532
|
|
|
|
|
|
|
query '', |
533
|
|
|
|
|
|
|
q{SELECT pg_catalog.setval('reindex.worklist_ord_seq', 1, false)}; |
534
|
|
|
|
|
|
|
|
535
|
|
|
|
|
|
|
query '', @param, <<'SQL'. $qual . <<'SQL'; |
536
|
|
|
|
|
|
|
INSERT INTO reindex.worklist(idx, status) |
537
|
|
|
|
|
|
|
SELECT c.oid, 'planned' |
538
|
|
|
|
|
|
|
FROM pg_catalog.pg_class c |
539
|
|
|
|
|
|
|
JOIN pg_catalog.pg_namespace n ON c.relnamespace=n.oid |
540
|
|
|
|
|
|
|
WHERE c.relkind = 'i' |
541
|
|
|
|
|
|
|
SQL |
542
|
|
|
|
|
|
|
ORDER BY n.nspname, c.relname |
543
|
|
|
|
|
|
|
SQL |
544
|
|
|
|
|
|
|
return; |
545
|
|
|
|
|
|
|
} |
546
|
|
|
|
|
|
|
|
547
|
|
|
|
|
|
|
sub rebuild { |
548
|
|
|
|
|
|
|
|
549
|
|
|
|
|
|
|
my ( $options, $opt_validate ); |
550
|
|
|
|
|
|
|
|
551
|
|
|
|
|
|
|
( $dbh, $options, $opt_dryrun ) = @_; |
552
|
|
|
|
|
|
|
|
553
|
|
|
|
|
|
|
$opt_validate = $options->{Validate}; |
554
|
|
|
|
|
|
|
$opt_throttle_on = $options->{ThrottleOn} || 10000000; |
555
|
|
|
|
|
|
|
$opt_throttle_off = $options->{ThrottleOff} || 100000; |
556
|
|
|
|
|
|
|
|
557
|
|
|
|
|
|
|
while ( my @idx = next_index() ) { |
558
|
|
|
|
|
|
|
reindex( @idx, $opt_validate ); |
559
|
|
|
|
|
|
|
query '', $idx[0], |
560
|
|
|
|
|
|
|
q{UPDATE reindex.worklist SET status='done' WHERE idx=$1}; |
561
|
|
|
|
|
|
|
} |
562
|
|
|
|
|
|
|
} |
563
|
|
|
|
|
|
|
|
564
|
|
|
|
|
|
|
sub run { |
565
|
|
|
|
|
|
|
my ($opt_help, $opt_dbname, $opt_server, |
566
|
|
|
|
|
|
|
$opt_user, $opt_pwd, $opt_port, |
567
|
|
|
|
|
|
|
@opt_namespaces, @opt_tables, @opt_indexes, |
568
|
|
|
|
|
|
|
$opt_validate, $opt_dryrun, $opt_throttle_on, |
569
|
|
|
|
|
|
|
$opt_throttle_off |
570
|
|
|
|
|
|
|
); |
571
|
|
|
|
|
|
|
( $opt_user, $opt_port, $opt_server, $opt_validate, $opt_throttle_on, |
572
|
|
|
|
|
|
|
$opt_throttle_off |
573
|
|
|
|
|
|
|
) = (qw/postgres 5432 localhost 1 10000000 100000/); |
574
|
|
|
|
|
|
|
|
575
|
|
|
|
|
|
|
GetOptions( |
576
|
|
|
|
|
|
|
'help' => \$opt_help, |
577
|
|
|
|
|
|
|
'database|dbname=s' => \$opt_dbname, |
578
|
|
|
|
|
|
|
'server=s' => \$opt_server, |
579
|
|
|
|
|
|
|
'user=s' => \$opt_user, |
580
|
|
|
|
|
|
|
'password=s' => \$opt_pwd, |
581
|
|
|
|
|
|
|
'port=s' => \$opt_port, |
582
|
|
|
|
|
|
|
'table=s' => \@opt_tables, |
583
|
|
|
|
|
|
|
'namespace=s' => \@opt_namespaces, |
584
|
|
|
|
|
|
|
'index=s' => \@opt_indexes, |
585
|
|
|
|
|
|
|
'validate!' => \$opt_validate, |
586
|
|
|
|
|
|
|
'dryrun!' => \$opt_dryrun, |
587
|
|
|
|
|
|
|
'high-txn-lag=i' => \$opt_throttle_on, |
588
|
|
|
|
|
|
|
'low-txn-lag=i' => \$opt_throttle_off, |
589
|
|
|
|
|
|
|
) |
590
|
|
|
|
|
|
|
|| pod2usage( |
591
|
|
|
|
|
|
|
-exitval => 1, |
592
|
|
|
|
|
|
|
-verbose => 2 |
593
|
|
|
|
|
|
|
); |
594
|
|
|
|
|
|
|
|
595
|
|
|
|
|
|
|
my $action = $ARGV[0]; |
596
|
|
|
|
|
|
|
if ($action) { |
597
|
|
|
|
|
|
|
if ( $action =~ /^p(?:r(?:e(?:p(?:a(?:re?)?)?)?)?)?$/i ) { |
598
|
|
|
|
|
|
|
$action = 'prepare'; |
599
|
|
|
|
|
|
|
} elsif ( $action =~ /^c(?:o(?:n(?:t(?:i(?:n(?:ue?)?)?)?)?)?)?$/i ) { |
600
|
|
|
|
|
|
|
$action = 'continue'; |
601
|
|
|
|
|
|
|
} else { |
602
|
|
|
|
|
|
|
pod2usage( |
603
|
|
|
|
|
|
|
-exitval => 1, |
604
|
|
|
|
|
|
|
-verbose => 2 |
605
|
|
|
|
|
|
|
); |
606
|
|
|
|
|
|
|
} |
607
|
|
|
|
|
|
|
} |
608
|
|
|
|
|
|
|
|
609
|
|
|
|
|
|
|
pod2usage( |
610
|
|
|
|
|
|
|
-exitval => 0, |
611
|
|
|
|
|
|
|
-verbose => 2 |
612
|
|
|
|
|
|
|
) if $opt_help; |
613
|
|
|
|
|
|
|
|
614
|
|
|
|
|
|
|
{ |
615
|
|
|
|
|
|
|
my $fh; |
616
|
|
|
|
|
|
|
if ( !defined $opt_pwd ) { |
617
|
|
|
|
|
|
|
|
618
|
|
|
|
|
|
|
# noop |
619
|
|
|
|
|
|
|
} elsif ( $opt_pwd =~ /^\d+$/ ) { |
620
|
|
|
|
|
|
|
open $fh, '<&=' . $opt_pwd ## no critic |
621
|
|
|
|
|
|
|
or die "Cannot open file descriptor $opt_pwd: $!\n"; |
622
|
|
|
|
|
|
|
$opt_pwd = readline $fh; |
623
|
|
|
|
|
|
|
chomp $opt_pwd; |
624
|
|
|
|
|
|
|
} else { |
625
|
|
|
|
|
|
|
open $fh, '<', $opt_pwd or die "Cannot open $opt_pwd: $!\n"; |
626
|
|
|
|
|
|
|
$opt_pwd = readline $fh; |
627
|
|
|
|
|
|
|
chomp $opt_pwd; |
628
|
|
|
|
|
|
|
} |
629
|
|
|
|
|
|
|
close $fh; |
630
|
|
|
|
|
|
|
} |
631
|
|
|
|
|
|
|
|
632
|
|
|
|
|
|
|
my $dbh = DBI->connect( |
633
|
|
|
|
|
|
|
"dbi:Pg:database=$opt_dbname;host=$opt_server;port=$opt_port;sslmode=prefer", |
634
|
|
|
|
|
|
|
$opt_user, |
635
|
|
|
|
|
|
|
$opt_pwd, |
636
|
|
|
|
|
|
|
{ pg_server_prepare => 0, |
637
|
|
|
|
|
|
|
PrintError => 0, |
638
|
|
|
|
|
|
|
RaiseError => 1, |
639
|
|
|
|
|
|
|
} |
640
|
|
|
|
|
|
|
); |
641
|
|
|
|
|
|
|
|
642
|
|
|
|
|
|
|
prepare( $dbh, \@opt_namespaces, \@opt_tables, \@opt_indexes ) |
643
|
|
|
|
|
|
|
unless defined $action and $action eq 'continue'; |
644
|
|
|
|
|
|
|
|
645
|
|
|
|
|
|
|
rebuild( |
646
|
|
|
|
|
|
|
$dbh, |
647
|
|
|
|
|
|
|
{ ThrottleOn => $opt_throttle_on, |
648
|
|
|
|
|
|
|
ThrottleOff => $opt_throttle_off, |
649
|
|
|
|
|
|
|
Validate => $opt_validate |
650
|
|
|
|
|
|
|
}, |
651
|
|
|
|
|
|
|
$opt_dryrun |
652
|
|
|
|
|
|
|
) if !defined $action or $action eq 'continue'; |
653
|
|
|
|
|
|
|
|
654
|
|
|
|
|
|
|
$dbh->disconnect; |
655
|
|
|
|
|
|
|
exit 0; |
656
|
|
|
|
|
|
|
} |
657
|
|
|
|
|
|
|
|
658
|
|
|
|
|
|
|
__PACKAGE__->run unless caller; |
659
|
|
|
|
|
|
|
|
660
|
|
|
|
|
|
|
=head1 NAME |
661
|
|
|
|
|
|
|
|
662
|
|
|
|
|
|
|
Pg::Reindex - rebuild postgresql indexes concurrently without locking. |
663
|
|
|
|
|
|
|
|
664
|
|
|
|
|
|
|
=head1 VERSION |
665
|
|
|
|
|
|
|
|
666
|
|
|
|
|
|
|
Version 0.01 |
667
|
|
|
|
|
|
|
|
668
|
|
|
|
|
|
|
=head1 SYNOPSIS |
669
|
|
|
|
|
|
|
|
670
|
|
|
|
|
|
|
=head3 Use as a module |
671
|
|
|
|
|
|
|
|
672
|
|
|
|
|
|
|
use Pg::Reindex qw(prepare rebuild); |
673
|
|
|
|
|
|
|
|
674
|
|
|
|
|
|
|
prepare($dbh, \@namespaces, \@tables, \@indexes); |
675
|
|
|
|
|
|
|
rebuild($dbh, \%options, $dryrun); |
676
|
|
|
|
|
|
|
|
677
|
|
|
|
|
|
|
=head3 Run as a perl script |
678
|
|
|
|
|
|
|
|
679
|
|
|
|
|
|
|
perl `perldoc -l Pg::Reindex` \ |
680
|
|
|
|
|
|
|
[--help] \ |
681
|
|
|
|
|
|
|
[--server=localhost] \ |
682
|
|
|
|
|
|
|
[--port=5432] \ |
683
|
|
|
|
|
|
|
[--user=postgres] \ |
684
|
|
|
|
|
|
|
[--password=PASSWORD] \ |
685
|
|
|
|
|
|
|
[--table=TABLE] ... \ |
686
|
|
|
|
|
|
|
[--namespace=NAMESPACE] ... \ |
687
|
|
|
|
|
|
|
[--index=INDEX] ... \ |
688
|
|
|
|
|
|
|
[--[no]validate] \ |
689
|
|
|
|
|
|
|
[--high_txn_lag=BYTES] \ |
690
|
|
|
|
|
|
|
[--log_txn_lag=BYTES] \ |
691
|
|
|
|
|
|
|
[--[no]dryrun] \ |
692
|
|
|
|
|
|
|
[prepare|continue] |
693
|
|
|
|
|
|
|
|
694
|
|
|
|
|
|
|
=head1 DESCRIPTION |
695
|
|
|
|
|
|
|
|
696
|
|
|
|
|
|
|
Postgresql indexes should be rebuilt on a regular basis for good performance. |
697
|
|
|
|
|
|
|
This can be done with the C command, however, building indexes this way |
698
|
|
|
|
|
|
|
requires an exclusive lock on the table. On the other hand, using |
699
|
|
|
|
|
|
|
C avoids this lock. |
700
|
|
|
|
|
|
|
|
701
|
|
|
|
|
|
|
C builds new indexes using C. Then it |
702
|
|
|
|
|
|
|
starts a transaction for each index in which it drops the old index and |
703
|
|
|
|
|
|
|
renames the new one. |
704
|
|
|
|
|
|
|
|
705
|
|
|
|
|
|
|
It handles normal indexes and C, C and C |
706
|
|
|
|
|
|
|
constraints. |
707
|
|
|
|
|
|
|
|
708
|
|
|
|
|
|
|
=head2 Streaming replication and throttling |
709
|
|
|
|
|
|
|
|
710
|
|
|
|
|
|
|
Before creating the next index, the streaming replication lag is checked to |
711
|
|
|
|
|
|
|
be below a certain limit. If so, nothing special happens and the index is |
712
|
|
|
|
|
|
|
built. |
713
|
|
|
|
|
|
|
|
714
|
|
|
|
|
|
|
Otherwise, C waits for the replicas to catch up. When the lag |
715
|
|
|
|
|
|
|
drops under a second limit, the C does not immediately continue. |
716
|
|
|
|
|
|
|
Instead it waits for another 30 seconds and checks the lag every second |
717
|
|
|
|
|
|
|
within that period. Only if the lag stays below the limit for the whole |
718
|
|
|
|
|
|
|
time, execution is continued. This grace period is to deal with the fact |
719
|
|
|
|
|
|
|
that a wal sender process may suddenly disappear and reappear after a |
720
|
|
|
|
|
|
|
few seconds. Without the grace period the program may encounter a false |
721
|
|
|
|
|
|
|
drop below the limit and hence continue. For large indexes this adds a |
722
|
|
|
|
|
|
|
lot of lag. |
723
|
|
|
|
|
|
|
|
724
|
|
|
|
|
|
|
=head1 USING AS A MODULE |
725
|
|
|
|
|
|
|
|
726
|
|
|
|
|
|
|
To use Pg::Reindex as a module, first you need to load the |
727
|
|
|
|
|
|
|
Pg::Reindex module: |
728
|
|
|
|
|
|
|
|
729
|
|
|
|
|
|
|
use Pg::Reindex qw(prepare rebuild); |
730
|
|
|
|
|
|
|
use strict; |
731
|
|
|
|
|
|
|
|
732
|
|
|
|
|
|
|
(The C |
733
|
|
|
|
|
|
|
|
734
|
|
|
|
|
|
|
Then you need to L the indexes that you want rebuilt. |
735
|
|
|
|
|
|
|
You can filter by combinations of namespace, tables, and indexes. |
736
|
|
|
|
|
|
|
|
737
|
|
|
|
|
|
|
prepare($dbh, \@opt_namespaces,\@opt_tables, \@opt_indexes); |
738
|
|
|
|
|
|
|
|
739
|
|
|
|
|
|
|
After "preparing" the set of indexes to be rebuilt, then you rebuild them: |
740
|
|
|
|
|
|
|
|
741
|
|
|
|
|
|
|
rebuild( $dbh, { ThrottleOn => 10000000, |
742
|
|
|
|
|
|
|
ThrottleOff => 100000, Validate => 1 }, $opt_dryrun); |
743
|
|
|
|
|
|
|
|
744
|
|
|
|
|
|
|
=head2 SUBROUTINES/METHODS |
745
|
|
|
|
|
|
|
|
746
|
|
|
|
|
|
|
=head3 prepare |
747
|
|
|
|
|
|
|
|
748
|
|
|
|
|
|
|
C determines the list of indexes that would be re-indexed, and |
749
|
|
|
|
|
|
|
sets up the data structures used by C. C must be called |
750
|
|
|
|
|
|
|
before C is called. |
751
|
|
|
|
|
|
|
|
752
|
|
|
|
|
|
|
C creates a new schema named C with 2 tables, |
753
|
|
|
|
|
|
|
C and C. C is created as C |
754
|
|
|
|
|
|
|
table. C saves information on all indexes that need to be rebuilt |
755
|
|
|
|
|
|
|
to C. The information in C is used by C. |
756
|
|
|
|
|
|
|
|
757
|
|
|
|
|
|
|
=over |
758
|
|
|
|
|
|
|
|
759
|
|
|
|
|
|
|
=item $dbh |
760
|
|
|
|
|
|
|
|
761
|
|
|
|
|
|
|
DBI database handle to the database whose indexes are to be reindexed. |
762
|
|
|
|
|
|
|
|
763
|
|
|
|
|
|
|
=item \@namespaces |
764
|
|
|
|
|
|
|
|
765
|
|
|
|
|
|
|
Rebuild only indexes in the C. If C is empty, |
766
|
|
|
|
|
|
|
indexes in all namespaces except the following are considered: |
767
|
|
|
|
|
|
|
those beginning with C, in Ci, or are |
768
|
|
|
|
|
|
|
C namespaces. |
769
|
|
|
|
|
|
|
|
770
|
|
|
|
|
|
|
=item \@tables |
771
|
|
|
|
|
|
|
|
772
|
|
|
|
|
|
|
Rebuild only indexes that belong to the specified tables. |
773
|
|
|
|
|
|
|
|
774
|
|
|
|
|
|
|
|
775
|
|
|
|
|
|
|
=item \@indexes |
776
|
|
|
|
|
|
|
|
777
|
|
|
|
|
|
|
List of indexes to reindex. |
778
|
|
|
|
|
|
|
|
779
|
|
|
|
|
|
|
=back |
780
|
|
|
|
|
|
|
|
781
|
|
|
|
|
|
|
If C, C and C are given simultaneously, |
782
|
|
|
|
|
|
|
only indexes satisfying all conditions are considered. |
783
|
|
|
|
|
|
|
|
784
|
|
|
|
|
|
|
=head3 rebuild |
785
|
|
|
|
|
|
|
|
786
|
|
|
|
|
|
|
=over |
787
|
|
|
|
|
|
|
|
788
|
|
|
|
|
|
|
=item $dbh |
789
|
|
|
|
|
|
|
|
790
|
|
|
|
|
|
|
DBI database handle to the database whose indexes are to be reindexed. |
791
|
|
|
|
|
|
|
|
792
|
|
|
|
|
|
|
=item \%options |
793
|
|
|
|
|
|
|
|
794
|
|
|
|
|
|
|
ThrottleOn |
795
|
|
|
|
|
|
|
ThrottleOff |
796
|
|
|
|
|
|
|
Validate |
797
|
|
|
|
|
|
|
|
798
|
|
|
|
|
|
|
=item $dryrun |
799
|
|
|
|
|
|
|
|
800
|
|
|
|
|
|
|
=back |
801
|
|
|
|
|
|
|
|
802
|
|
|
|
|
|
|
=head1 USING AS A PERL SCRIPT |
803
|
|
|
|
|
|
|
|
804
|
|
|
|
|
|
|
|
805
|
|
|
|
|
|
|
To use Pg::Reindex as a perl script you need to have perl run it. The command |
806
|
|
|
|
|
|
|
below would do that by using C to determine C's location. |
807
|
|
|
|
|
|
|
|
808
|
|
|
|
|
|
|
perl `perldoc -l Pg::Reindex` \ |
809
|
|
|
|
|
|
|
[--help] \ |
810
|
|
|
|
|
|
|
[--server=localhost] \ |
811
|
|
|
|
|
|
|
[--port=5432] \ |
812
|
|
|
|
|
|
|
[--user=postgres] \ |
813
|
|
|
|
|
|
|
[--password=PASSWORD] \ |
814
|
|
|
|
|
|
|
[--table=TABLE] ... \ |
815
|
|
|
|
|
|
|
[--namespace=NAMESPACE] ... \ |
816
|
|
|
|
|
|
|
[--index=INDEX] ... \ |
817
|
|
|
|
|
|
|
[--[no]validate] \ |
818
|
|
|
|
|
|
|
[--high_txn_lag=BYTES] \ |
819
|
|
|
|
|
|
|
[--log_txn_lag=BYTES] \ |
820
|
|
|
|
|
|
|
[--[no]dryrun] \ |
821
|
|
|
|
|
|
|
[prepare|continue] |
822
|
|
|
|
|
|
|
|
823
|
|
|
|
|
|
|
=head2 OPTIONS |
824
|
|
|
|
|
|
|
|
825
|
|
|
|
|
|
|
Options can be abbreviated. |
826
|
|
|
|
|
|
|
|
827
|
|
|
|
|
|
|
=over 4 |
828
|
|
|
|
|
|
|
|
829
|
|
|
|
|
|
|
=item --server |
830
|
|
|
|
|
|
|
|
831
|
|
|
|
|
|
|
Hostname / IP address or directory path to use to connect to the Postgres |
832
|
|
|
|
|
|
|
server. If you want to use a local UNIX domain socket, specify the socket |
833
|
|
|
|
|
|
|
directory path. |
834
|
|
|
|
|
|
|
|
835
|
|
|
|
|
|
|
Default: localhost |
836
|
|
|
|
|
|
|
|
837
|
|
|
|
|
|
|
=item --port |
838
|
|
|
|
|
|
|
|
839
|
|
|
|
|
|
|
The port to connect to. |
840
|
|
|
|
|
|
|
|
841
|
|
|
|
|
|
|
Default: 5432 |
842
|
|
|
|
|
|
|
|
843
|
|
|
|
|
|
|
=item --user |
844
|
|
|
|
|
|
|
|
845
|
|
|
|
|
|
|
The user. |
846
|
|
|
|
|
|
|
|
847
|
|
|
|
|
|
|
Default: postgres |
848
|
|
|
|
|
|
|
|
849
|
|
|
|
|
|
|
=item --password |
850
|
|
|
|
|
|
|
|
851
|
|
|
|
|
|
|
a file name or open file descriptor where to read the password from. |
852
|
|
|
|
|
|
|
If the parameter value consists of only digits, it's evaluated as file |
853
|
|
|
|
|
|
|
descriptor. |
854
|
|
|
|
|
|
|
|
855
|
|
|
|
|
|
|
There is no default. |
856
|
|
|
|
|
|
|
|
857
|
|
|
|
|
|
|
A convenient way to specify the password on the BASH command line is |
858
|
|
|
|
|
|
|
|
859
|
|
|
|
|
|
|
reindex.pl --password=3 3<<
|
860
|
|
|
|
|
|
|
|
861
|
|
|
|
|
|
|
That way the password appears in F<.bash_history>. But that file is |
862
|
|
|
|
|
|
|
usually only readable to the owner. |
863
|
|
|
|
|
|
|
|
864
|
|
|
|
|
|
|
=item --table |
865
|
|
|
|
|
|
|
|
866
|
|
|
|
|
|
|
Reindex only indexes that belong to the specified table. |
867
|
|
|
|
|
|
|
|
868
|
|
|
|
|
|
|
This option can be given multiple times. |
869
|
|
|
|
|
|
|
|
870
|
|
|
|
|
|
|
If C<--table>, C<--namespace> and C<--index> are given simultaneously, |
871
|
|
|
|
|
|
|
only indexes satisfying all conditions are considered. |
872
|
|
|
|
|
|
|
|
873
|
|
|
|
|
|
|
=item --namespace |
874
|
|
|
|
|
|
|
|
875
|
|
|
|
|
|
|
Without this option only namespaces are considered that are not in |
876
|
|
|
|
|
|
|
beginning with C. Also C or C |
877
|
|
|
|
|
|
|
namespaces are omitted. |
878
|
|
|
|
|
|
|
|
879
|
|
|
|
|
|
|
If C<--table>, C<--namespace> and C<--index> are given simultaneously, |
880
|
|
|
|
|
|
|
only indexes satisfying all conditions are considered. |
881
|
|
|
|
|
|
|
|
882
|
|
|
|
|
|
|
=item --index |
883
|
|
|
|
|
|
|
|
884
|
|
|
|
|
|
|
If C<--table>, C<--namespace> and C<--index> are given simultaneously, |
885
|
|
|
|
|
|
|
only indexes satisfying all conditions are considered. |
886
|
|
|
|
|
|
|
|
887
|
|
|
|
|
|
|
=item --[no]validate |
888
|
|
|
|
|
|
|
|
889
|
|
|
|
|
|
|
validate C constraints or leave them C. Default |
890
|
|
|
|
|
|
|
it to validate. |
891
|
|
|
|
|
|
|
|
892
|
|
|
|
|
|
|
=item --[no]dryrun |
893
|
|
|
|
|
|
|
|
894
|
|
|
|
|
|
|
don't modify the database but print the essential SQL statements. |
895
|
|
|
|
|
|
|
|
896
|
|
|
|
|
|
|
=item --high-txn-lag |
897
|
|
|
|
|
|
|
|
898
|
|
|
|
|
|
|
the upper limit streaming replicas may lag behind in bytes. |
899
|
|
|
|
|
|
|
|
900
|
|
|
|
|
|
|
Default is 10,000,000. |
901
|
|
|
|
|
|
|
|
902
|
|
|
|
|
|
|
=item --low-txn-lag |
903
|
|
|
|
|
|
|
|
904
|
|
|
|
|
|
|
the lower limit in bytes when execution may be continued after it has been |
905
|
|
|
|
|
|
|
interrupted due to exceeding C. |
906
|
|
|
|
|
|
|
|
907
|
|
|
|
|
|
|
Default is 100,000 |
908
|
|
|
|
|
|
|
|
909
|
|
|
|
|
|
|
=item --help |
910
|
|
|
|
|
|
|
|
911
|
|
|
|
|
|
|
print this help |
912
|
|
|
|
|
|
|
|
913
|
|
|
|
|
|
|
=back |
914
|
|
|
|
|
|
|
|
915
|
|
|
|
|
|
|
=head1 AUTHOR |
916
|
|
|
|
|
|
|
|
917
|
|
|
|
|
|
|
BINARY, C<< >> |
918
|
|
|
|
|
|
|
|
919
|
|
|
|
|
|
|
=head1 BUGS |
920
|
|
|
|
|
|
|
|
921
|
|
|
|
|
|
|
Please report any bugs or feature requests to C, or through |
922
|
|
|
|
|
|
|
the web interface at L. I will be notified, and then you'll |
923
|
|
|
|
|
|
|
automatically be notified of progress on your bug as I make changes. |
924
|
|
|
|
|
|
|
|
925
|
|
|
|
|
|
|
=head1 LICENSE AND COPYRIGHT |
926
|
|
|
|
|
|
|
|
927
|
|
|
|
|
|
|
Copyright 2015 Binary Ltd. |
928
|
|
|
|
|
|
|
|
929
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify it |
930
|
|
|
|
|
|
|
under the terms of the the Artistic License (2.0). You may obtain a |
931
|
|
|
|
|
|
|
copy of the full license at: |
932
|
|
|
|
|
|
|
|
933
|
|
|
|
|
|
|
L |
934
|
|
|
|
|
|
|
|
935
|
|
|
|
|
|
|
Any use, modification, and distribution of the Standard or Modified |
936
|
|
|
|
|
|
|
Versions is governed by this Artistic License. By using, modifying or |
937
|
|
|
|
|
|
|
distributing the Package, you accept this license. Do not use, modify, |
938
|
|
|
|
|
|
|
or distribute the Package, if you do not accept this license. |
939
|
|
|
|
|
|
|
|
940
|
|
|
|
|
|
|
If your Modified Version has been derived from a Modified Version made |
941
|
|
|
|
|
|
|
by someone other than you, you are nevertheless required to ensure that |
942
|
|
|
|
|
|
|
your Modified Version complies with the requirements of this license. |
943
|
|
|
|
|
|
|
|
944
|
|
|
|
|
|
|
This license does not grant you the right to use any trademark, service |
945
|
|
|
|
|
|
|
mark, tradename, or logo of the Copyright Holder. |
946
|
|
|
|
|
|
|
|
947
|
|
|
|
|
|
|
This license includes the non-exclusive, worldwide, free-of-charge |
948
|
|
|
|
|
|
|
patent license to make, have made, use, offer to sell, sell, import and |
949
|
|
|
|
|
|
|
otherwise transfer the Package with respect to any patent claims |
950
|
|
|
|
|
|
|
licensable by the Copyright Holder that are necessarily infringed by the |
951
|
|
|
|
|
|
|
Package. If you institute patent litigation (including a cross-claim or |
952
|
|
|
|
|
|
|
counterclaim) against any party alleging that the Package constitutes |
953
|
|
|
|
|
|
|
direct or contributory patent infringement, then this Artistic License |
954
|
|
|
|
|
|
|
to you shall terminate on the date that such litigation is filed. |
955
|
|
|
|
|
|
|
|
956
|
|
|
|
|
|
|
Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER |
957
|
|
|
|
|
|
|
AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. |
958
|
|
|
|
|
|
|
THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
959
|
|
|
|
|
|
|
PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY |
960
|
|
|
|
|
|
|
YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR |
961
|
|
|
|
|
|
|
CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR |
962
|
|
|
|
|
|
|
CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE, |
963
|
|
|
|
|
|
|
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
964
|
|
|
|
|
|
|
|
965
|
|
|
|
|
|
|
|
966
|
|
|
|
|
|
|
=cut |
967
|
|
|
|
|
|
|
|
968
|
|
|
|
|
|
|
1; # End of Pg::Reindex |