[HDFS-1597] Batched edit log syncs can reset synctxid throw assertions

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Fix Version/s: 0.22.0
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 25/Jan/11 23:16
• Updated: 12/Dec/11 06:19
• Resolved: 09/Feb/11 01:19

Description

The top of FSEditLog.logSync has the following assertion:

        assert editStreams.size() > 0 : "no editlog streams";

which should actually come after checking to see if the sync was already batched in by another thread.

This is related to a second bug in which the same case causes synctxid to be reset to 0

Issue Links

• breaks: HDFS-1508 Ability to do savenamespace without being in safemode