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Fix a fulltext search issue where finding token length and stopwords could fail

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Summary:
Ref T12137. If a database is missing the InnoDB or MyISAM table engines, the big combined query to get both will fail.

Instead, try InnoDB first and then MyISAM.

(I have both engines locally so this worked until I deployed it.)

Test Plan: Faked an InnoDB error like `secure`, got a MyISAM result.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T12137

Differential Revision: https://secure.phabricator.com/D17673
This commit is contained in:
epriestley 2017-04-12 19:16:58 -07:00
parent 3245e74f16
commit ada9046e31
1 changed files with 40 additions and 27 deletions
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27
src/applications/search/fulltextstorage/PhabricatorMySQLFulltextStorageEngine.php
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@ -473,21 +473,35 @@ final class PhabricatorMySQLFulltextStorageEngine
}
private function newEngineLimits(AphrontDatabaseConnection $conn) {
// First, try InnoDB. Some database may not have both table engines, so
// selecting variables from missing table engines can fail and throw.
try {
$result = queryfx_one(
$conn,
'SELECT
@@innodb_ft_min_token_size innodb_max,
@@ft_min_word_len myisam_max,
@@ft_stopword_file myisam_stopwords');
'SELECT @@innodb_ft_min_token_size innodb_max');
} catch (AphrontQueryException $ex) {
$result = null;
}
if ($result['innodb_max']) {
if ($result) {
$min_len = $result['innodb_max'];
$stopwords = queryfx_all(
$conn,
'SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_DEFAULT_STOPWORD');
$stopwords = ipull($stopwords, 'value');
$stopwords = array_fuse($stopwords);
} else {
return array($min_len, $stopwords);
}
// If InnoDB fails, try MyISAM.
$result = queryfx_one(
$conn,
'SELECT
@@ft_min_word_len myisam_max,
@@ft_stopword_file myisam_stopwords');
$min_len = $result['myisam_max'];
$file = $result['myisam_stopwords'];
@ -508,7 +522,6 @@ final class PhabricatorMySQLFulltextStorageEngine
$stopwords = explode("\n", $data);
$stopwords = array_filter($stopwords);
$stopwords = array_fuse($stopwords);
}
return array($min_len, $stopwords);
}