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Merge pull request #863 from hpoettker/PT-2378_table_sync_with_more_fp_precision

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PT-2378 - extended FP precision in pt-table-sync
This commit is contained in:
Sveta Smirnova
2025-01-14 18:06:55 +03:00
committed by GitHub
parent f837672d1d 1e581be06a
commit 0a98a81370
20 changed files with 194 additions and 17 deletions
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18
t/pt-table-sync/float_precision.t
View File

@@ -63,6 +63,23 @@ is(
'--float-precision so no more diff (issue 410)'
);
# Although the SQL statement contains serialized values with more than necessary decimal digits
# we produce the expected value on execution
$output = `$trunk/bin/pt-table-sync --sync-to-source h=127.1,P=12346,u=msandbox,p=msandbox,D=test,t=fl --execute 2>&1`;
is(
$output,
'',
'REPLACE statement can be successfully applied'
);
$sb->wait_for_replicas();
my @rows = $replica_dbh->selectrow_array('SELECT `d` FROM `test`.`fl` WHERE `d` = 2.0000012');
is_deeply(
\@rows,
[2.0000012],
'Floating point values are set correctly in round trip'
);
# #############################################################################
# pt-table-sync quotes floats, prevents syncing
# https://bugs.launchpad.net/percona-toolkit/+bug/1229861
@@ -86,7 +103,6 @@ is_deeply(
[],
"Sync rows with float values (bug 1229861)"
) or diag(Dumper($rows), $output);
# #############################################################################
# Done.
# #############################################################################

96
t/pt-table-sync/pt-2378.t Normal file
View File

@@ -0,0 +1,96 @@
#!/usr/bin/env perl
BEGIN {
die "The PERCONA_TOOLKIT_BRANCH environment variable is not set.\n"
unless $ENV{PERCONA_TOOLKIT_BRANCH} && -d $ENV{PERCONA_TOOLKIT_BRANCH};
unshift @INC, "$ENV{PERCONA_TOOLKIT_BRANCH}/lib";
};
use strict;
use warnings FATAL => 'all';
use English qw(-no_match_vars);
use Test::More;
use PerconaTest;
use Sandbox;
require "$trunk/bin/pt-table-sync";
my $dp = new DSNParser(opts=>$dsn_opts);
my $sb = new Sandbox(basedir => '/tmp', DSNParser => $dp);
my $source_dbh = $sb->get_dbh_for('source');
my $replica1_dbh = $sb->get_dbh_for('replica1');
if ( !$source_dbh ) {
plan skip_all => 'Cannot connect to sandbox source';
}
elsif ( !$replica1_dbh ) {
plan skip_all => 'Cannot connect to sandbox replica1';
}
else {
plan tests => 5;
}
my ($output, @rows);
# #############################################################################
# Test generated REPLACE statements.
# #############################################################################
$sb->load_file('source', "t/pt-table-sync/samples/pt-2378.sql");
$sb->wait_for_replicas();
$replica1_dbh->do("update `test`.`test_table` set `some_string` = 'c' where `id` = 1");
$output = remove_traces(output(
sub { pt_table_sync::main('--sync-to-source',
'h=127.0.0.1,P=12346,u=msandbox,p=msandbox',
qw(-t test.test_table --print --execute))
},
));
chomp($output);
is(
$output,
"REPLACE INTO `test`.`test_table`(`id`, `value1`, `value2`, `some_string`) VALUES ('1', 315.25999999999942, 2.6919444444444447, 'a');",
"Floating point numbers are generated with sufficient precision in REPLACE statements"
);
$sb->wait_for_replicas();
my $query = 'SELECT * FROM `test`.`test_table` WHERE `value1` = 315.2599999999994 AND `value2` = 2.6919444444444447';
@rows = $replica1_dbh->selectrow_array($query);
is_deeply(
\@rows,
[1, 315.2599999999994, 2.6919444444444447, 'a'],
'Floating point values are set correctly in round trip'
);
# #############################################################################
# Test generated UPDATE statements.
# #############################################################################
$sb->load_file('source', "t/pt-table-sync/samples/pt-2378.sql");
$sb->wait_for_replicas();
$replica1_dbh->do("update `test`.`test_table` set `some_string` = 'c' where `id` = 1");
$output = remove_traces(output(
sub { pt_table_sync::main(qw(--print --execute),
"h=127.0.0.1,P=12346,u=msandbox,p=msandbox,D=test,t=test_table",
"h=127.0.0.1,P=12345,u=msandbox,p=msandbox,D=test,t=test_table");
}
));
chomp($output);
is(
$output,
"UPDATE `test`.`test_table` SET `value1`=315.25999999999942, `value2`=2.6919444444444447, `some_string`='c' WHERE `id`='1' LIMIT 1;",
"Floating point numbers are generated with sufficient precision in UPDATE statements"
);
@rows = $source_dbh->selectrow_array($query);
is_deeply(
\@rows,
[1, 315.2599999999994, 2.6919444444444447, 'c'],
'Floating point values are set correctly in round trip'
);
# #############################################################################
# Done.
# #############################################################################
$sb->wipe_clean($source_dbh);
ok($sb->ok(), "Sandbox servers") or BAIL_OUT(__FILE__ . " broke the sandbox");
exit;

15
t/pt-table-sync/samples/pt-2378.sql Normal file
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@@ -0,0 +1,15 @@
DROP DATABASE IF EXISTS test;
CREATE DATABASE test;
USE test;
CREATE TABLE `test_table` (
`id` BIGINT AUTO_INCREMENT PRIMARY KEY,
`value1` DOUBLE NOT NULL,
`value2` DOUBLE NOT NULL,
`some_string` VARCHAR(32) NOT NULL
) ENGINE=InnoDB;
INSERT INTO `test_table`
(`value1`, `value2`, `some_string`)
VALUES
(315.2599999999994, 2.6919444444444447, 'a');