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# Copyright (c) 2008, 2011 Oracle and/or its affiliates. All rights reserved.
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# Use is subject to license terms.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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package GenTest::Validator::ResultsetComparator;
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@ISA = qw(GenTest GenTest::Validator);
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use GenTest::Constants;
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use GenTest::Comparator;
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use GenTest::Validator;
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my ($comparator, $executors, $results) = @_;
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return STATUS_OK if $#$results != 1;
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my $query = $results->[0]->query();
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my $compare_outcome = GenTest::Comparator::compare($results->[0], $results->[1]);
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return STATUS_WONT_HANDLE if $results->[0]->status() == STATUS_SEMANTIC_ERROR || $results->[1]->status() == STATUS_SEMANTIC_ERROR;
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return STATUS_WONT_HANDLE if $results->[0]->query() =~ m{EXPLAIN}sio;
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if ( ($compare_outcome == STATUS_LENGTH_MISMATCH) ||
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($compare_outcome == STATUS_CONTENT_MISMATCH)
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say("---------- RESULT COMPARISON ISSUE START ----------");
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if ($compare_outcome == STATUS_LENGTH_MISMATCH) {
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if ($query =~ m{^\s*select}io) {
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say("Query: $query failed: result length mismatch between servers (".$results->[0]->rows()." vs. ".$results->[1]->rows().")");
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say(GenTest::Comparator::dumpDiff($results->[0], $results->[1]));
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say("Query: $query failed: affected_rows mismatch between servers (".$results->[0]->affectedRows()." vs. ".$results->[1]->affectedRows().")");
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} elsif ($compare_outcome == STATUS_CONTENT_MISMATCH) {
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say("Query: ".$results->[0]->query()." failed: result content mismatch between servers.");
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say(GenTest::Comparator::dumpDiff($results->[0], $results->[1]));
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if ( ($compare_outcome == STATUS_LENGTH_MISMATCH) ||
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($compare_outcome == STATUS_CONTENT_MISMATCH)
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say("---------- RESULT COMPARISON ISSUE END ------------");
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# If the discrepancy is found on SELECT, we reduce the severity of the error so that the test can continue
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# hopefully finding further errors in the same run or providing an indication as to how frequent the error is
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# If the discrepancy is on an UPDATE, then the servers have diverged and the test can not continue safely.
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if ($query =~ m{^[\s/*!0-9]*(EXPLAIN|SELECT|ALTER|LOAD\s+INDEX|CACHE\s+INDEX)}io) {
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return $compare_outcome - STATUS_SELECT_REDUCTION;
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return $compare_outcome;