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UserMerge: don't update the entire table in one query
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Version: unspecified
Severity: normal



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bzimport raised the priority of this task from to High.Nov 22 2014, 3:46 AM
bzimport set Reference to bz70376.
Legoktm created this task.Sep 4 2014, 1:09 AM
Reedy added a comment.Sep 4 2014, 1:12 AM

From the runBatchedQuery.php maintenance script:

		do {
			$this->output( "Batch $n: " );
			$dbw->query( $query, __METHOD__ );
			$affected = $dbw->affectedRows();
			$this->output( "$affected rows\n" );
		} while ( $affected > 0 );

This should be easily enough modified to do it...

gerritadmin wrote:

Change 158310 had a related patch set uploaded by Reedy:
Don't update the entire table in one query

gerritadmin wrote:

Change 158310 merged by jenkins-bot:
Don't update the entire table in one query to avoid melting servers