a8f204894f
Rip out the ugly MySQL 4.0 mode and use the background mode for it, it should be compatible too. Add a little help text
85 lines
2.4 KiB
PHP
85 lines
2.4 KiB
PHP
<?php
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require_once "commandLine.inc";
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if( isset( $options['help'] ) ) {
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die( "Batch-recalculate user_editcount fields from the revision table.
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Options:
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--quick Force the update to be done in a single query.
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--background Force replication-friendly mode; may be inefficient but
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avoids locking tables or lagging slaves with large updates;
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calculates counts on a slave if possible.
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Background mode will be automatically used if the server is MySQL 4.0
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(which does not support subqueries) or if multiple servers are listed
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in \$wgDBservers, usually indicating a replication environment.
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");
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}
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$dbw = wfGetDB( DB_MASTER );
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$user = $dbw->tableName( 'user' );
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$revision = $dbw->tableName( 'revision' );
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$dbver = $dbw->getServerVersion();
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// Autodetect mode...
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$backgroundMode = count( $wgDBservers ) > 1 ||
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($dbw instanceof DatabaseMySql && version_compare( $dbver, '4.1' ) < 0);
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if( isset( $options['background'] ) ) {
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$backgroundMode = true;
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} elseif( isset( $options['quick'] ) ) {
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$backgroundMode = false;
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}
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if( $backgroundMode ) {
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echo "Using replication-friendly background mode...\n";
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$dbr = wfGetDB( DB_SLAVE );
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$chunkSize = 100;
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$lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __FUNCTION__ );
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$start = microtime( true );
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$migrated = 0;
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for( $min = 0; $min <= $lastUser; $min += $chunkSize ) {
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$max = $min + $chunkSize;
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$result = $dbr->query(
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"SELECT
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user_id,
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COUNT(rev_user) AS user_editcount
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FROM $user
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LEFT OUTER JOIN $revision ON user_id=rev_user
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WHERE user_id > $min AND user_id <= $max
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GROUP BY user_id",
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__FUNCTION__ );
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while( $row = $dbr->fetchObject( $result ) ) {
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$dbw->update( 'user',
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array( 'user_editcount' => $row->user_editcount ),
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array( 'user_id' => $row->user_id ),
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__FUNCTION__ );
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++$migrated;
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}
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$dbr->freeResult( $result );
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$delta = microtime( true ) - $start;
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$rate = ($delta == 0.0) ? 0.0 : $migrated / $delta;
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printf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
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$wgDBname,
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$migrated,
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min( $max, $lastUser ) / $lastUser * 100.0,
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$delta,
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$rate );
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wfWaitForSlaves( 10 );
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}
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} else {
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// Subselect should work on modern MySQLs etc
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echo "Using single-query mode...\n";
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$sql = "UPDATE $user SET user_editcount=(SELECT COUNT(*) FROM $revision WHERE rev_user=user_id)";
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$dbw->query( $sql );
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}
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echo "Done!\n";
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?>
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