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Test probes

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This commit is contained in:
Andrew Kane
2022-02-06 20:08:53 -08:00
parent 3d2b867a58
commit 062e220936
1 changed files with 30 additions and 17 deletions
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47
test/t/003_recall.pl
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@@ -2,10 +2,32 @@ use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 1;
use Test::More tests => 2;
my $node;
my @expected_ids;
# TODO Run more queries to prevent flakiness
sub test_recall
{
my ($min) = @_;
my $actual = $node->safe_psql("postgres", "SELECT i FROM tst ORDER BY v <-> '[0.5,0.5,0.5]' LIMIT 10;");
my @actual_ids = split("\n", $actual);
my %actual_set = map { $_ => 1 } @actual_ids;
my $count = 0;
for my $el (@expected_ids) {
if (exists($actual_set{$el})) {
$count++;
}
}
cmp_ok($count, ">=", $min);
}
# Initialize node
my $node = get_new_node('node');
$node = get_new_node('node');
$node->init;
$node->start;
@@ -18,24 +40,15 @@ $node->safe_psql("postgres",
# Get exact results
my $expected = $node->safe_psql("postgres", "SELECT i FROM tst ORDER BY v <-> '[0.5,0.5,0.5]' LIMIT 10;");
my @expected_ids = split("\n", $expected);
@expected_ids = split("\n", $expected);
# Add index
$node->safe_psql("postgres", "CREATE INDEX ON tst USING ivfflat (v);");
# Get approximate results
# Test approximate results
$node->safe_psql("postgres", "SET enable_seqscan = off;");
my $actual = $node->safe_psql("postgres", "SELECT i FROM tst ORDER BY v <-> '[0.5,0.5,0.5]' LIMIT 10;");
my @actual_ids = split("\n", $actual);
my %actual_set = map { $_ => 1 } @actual_ids;
test_recall(5);
my $count = 0;
for my $el (@expected_ids) {
if (exists($actual_set{$el})) {
$count++;
}
}
# TODO Run more queries to prevent flakiness
# TODO Test ivfflat.probes
cmp_ok($count, ">=", 5);
# Test probes
$node->safe_psql("postgres", "SET ivfflat.probes = 100");
test_recall(10);