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Code Issues Releases Wiki Activity

Provide setup instructions for reducing minimum index word length

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Summary:
The MySQL MyISAM fulltext backend defaults to a minimum length of 4, but many
3-letter words are useful search terms. Provide instructions for configuring
MySQL to reduce the auto-stopword length.

Test Plan:
Followed instructions, searched for a 3-letter term and got a hit.

Reviewed By: jungejason
Reviewers: aran, tuomaspelkonen, jungejason
CC: aran, jungejason
Differential Revision: 471
This commit is contained in:
epriestley 2011-06-15 08:39:02 -07:00
parent c82c6e204f
commit 12772ec35f
1 changed files with 24 additions and 2 deletions
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26
src/infrastructure/setup/PhabricatorSetup.php
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@ -313,6 +313,27 @@ class PhabricatorSetup {
self::write(" okay Database schema are up to date (v{$expect}).\n");
}
$index_min_length = queryfx_one(
$conn_raw,
'SHOW VARIABLES LIKE %s',
'ft_min_word_len');
$index_min_length = idx($index_min_length, 'Value', 4);
if ($index_min_length >= 4) {
self::writeNote(
"MySQL is configured with a 'ft_min_word_len' of 4 or greater, which ".
"means you will not be able to search for 3-letter terms. Consider ".
"setting this in your configuration:\n".
"\n".
" [mysqld]\n".
" ft_min_word_len=3\n".
"\n".
"Then optionally run:\n".
"\n".
" REPAIR TABLE phabricator_search.search_documentfield QUICK;\n".
"\n".
"...to reindex existing documents.");
}
self::write("[OKAY] Database configuration OKAY\n");
@ -457,8 +478,9 @@ class PhabricatorSetup {
}
private static function writeNote($note) {
self::write(
'Note: '.wordwrap($note, 75, "\n ", true)."\n\n");
$note = "*** NOTE: ".wordwrap($note, 75, "\n", true);
$note = "\n".str_replace("\n", "\n ", $note)."\n\n";
self::write($note);
}
public static function writeHeader($header) {