1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @ingroup Maintenance
*/
require_once( dirname(__FILE__) . '/Maintenance.php' );
class InitEditCount extends Maintenance {
public function __construct() {
parent::__construct();
$this->addOption( 'quick', 'Force the update to be done in a single query' );
$this->addOption( 'background', 'Force replication-friendly mode; may be inefficient but
avoids locking tables or lagging slaves with large updates;
calculates counts on a slave if possible.
Background mode will be automatically used if the server is MySQL 4.0
(which does not support subqueries) or if multiple servers are listed
in $wgDBservers, usually indicating a replication environment.' );
$this->mDescription = "Batch-recalculate user_editcount fields from the revision table";
}
public function execute() {
global $wgDBservers;
$dbw = wfGetDB( DB_MASTER );
$user = $dbw->tableName( 'user' );
$revision = $dbw->tableName( 'revision' );
$dbver = $dbw->getServerVersion();
// Autodetect mode...
$backgroundMode = count( $wgDBservers ) > 1 ||
($dbw instanceof DatabaseMySql && version_compare( $dbver, '4.1' ) < 0);
if( $this->hasOption('background') ) {
$backgroundMode = true;
} elseif( $this->hasOption('quick') ) {
$backgroundMode = false;
}
if( $backgroundMode ) {
$this->output( "Using replication-friendly background mode...\n" );
$dbr = wfGetDB( DB_SLAVE );
$chunkSize = 100;
$lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __METHOD__ );
$start = microtime( true );
$migrated = 0;
for( $min = 0; $min <= $lastUser; $min += $chunkSize ) {
$max = $min + $chunkSize;
$result = $dbr->query(
"SELECT
user_id,
COUNT(rev_user) AS user_editcount
FROM $user
LEFT OUTER JOIN $revision ON user_id=rev_user
WHERE user_id > $min AND user_id <= $max
GROUP BY user_id",
__METHOD__ );
foreach( $result as $row ) {
$dbw->update( 'user',
array( 'user_editcount' => $row->user_editcount ),
array( 'user_id' => $row->user_id ),
__METHOD__ );
++$migrated;
}
$dbr->freeResult( $result );
$delta = microtime( true ) - $start;
$rate = ($delta == 0.0) ? 0.0 : $migrated / $delta;
$this->output( sprintf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
wfWikiID(),
$migrated,
min( $max, $lastUser ) / $lastUser * 100.0,
$delta,
$rate ) );
wfWaitForSlaves( 10 );
}
} else {
// Subselect should work on modern MySQLs etc
$this->output( "Using single-query mode...\n" );
$sql = "UPDATE $user SET user_editcount=(SELECT COUNT(*) FROM $revision WHERE rev_user=user_id)";
$dbw->query( $sql );
}
$this->output( "Done!\n" );
}
}
$maintClass = "InitEditCount";
require_once( DO_MAINTENANCE );
|
