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Commit06d824a

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author
Timur Magomedov
committed
Reset aqo mode to frozen in case of shmem overflow
1 parent00c8bac commit06d824a

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2 files changed

+51
-3
lines changed

2 files changed

+51
-3
lines changed

‎preprocessing.c‎

Lines changed: 4 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -316,10 +316,11 @@ aqo_planner(Query *parse, const char *query_string, int cursorOptions,
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disable_aqo_for_query();
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/*
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* Switch AQO to controlled mode. In this mode we wouldn't add new
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* query classes, just use and learn on existed set.
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* Switch AQO to frozen mode. In this mode we wouldn't collect
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* any new data, just read collected statistics for already
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* known query classes.
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*/
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aqo_mode=AQO_MODE_CONTROLLED;
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aqo_mode=AQO_MODE_FROZEN;
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}
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}
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‎t/006_overflow.pl‎

Lines changed: 47 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,47 @@
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use strict;
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use warnings;
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use PostgreSQL::Test::Cluster;
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use PostgreSQL::Test::Utils;
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use Test::Moretests=> 4;
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my$node = PostgreSQL::Test::Cluster->new('aqotest');
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$node->init;
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$node->append_conf('postgresql.conf',qq{
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shared_preload_libraries = 'aqo'
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aqo.join_threshold = 0
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aqo.mode = 'frozen'
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aqo.show_details = 'on'
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aqo.dsm_size_max = 10
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aqo.force_collect_stat = 'on'
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aqo.fs_max_items = 3
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aqo.fss_max_items = 10
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});
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# General purpose variables.
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my$res;
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my$mode;
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# Disable default settings, forced by PGOPTIONS in AQO Makefile
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$ENV{PGOPTIONS}="";
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$node->start();
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$node->safe_psql('postgres','CREATE EXTENSION aqo');
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$mode =$node->safe_psql('postgres',"show aqo.mode");
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like($mode,qr/frozen/);
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$node->safe_psql('postgres','CREATE TABLE a (x int);
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INSERT INTO a (x) SELECT mod(ival,10) FROM generate_series(1,1000) As ival');
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$res =$node->safe_psql('postgres','EXPLAIN ANALYZE SELECT x FROM a WHERE x < 5;');
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like($res,qr/AQO mode: FROZEN/);
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$res =$node->safe_psql('postgres','EXPLAIN ANALYZE SELECT count(x) FROM a WHERE x > 5;');
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like($res,qr/AQO mode: FROZEN/);
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$mode =$node->safe_psql('postgres',"show aqo.mode");
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like($mode,qr/frozen/);
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$node->stop();
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done_testing();

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