[HDFS-9533] seen_txid in the shared edits directory is modified during bootstrapping

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.8.0, 2.7.3, 3.0.0-alpha1
• Component/s: ha, namenode
• Target Version/s: 2.7.3
• Hadoop Flags: Reviewed
• Assignee: Kihwal Lee
• Reporter: Kihwal Lee
• Created: 09/Dec/15 19:03
• Updated: 06/Jan/17 01:44
• Resolved: 17/Dec/15 23:33

Description

The last known transaction id is stored in the seen_txid file of all known directories of a NNStorage when starting a new edit segment. However, we have seen a case where it contains an id that falls in the middle of an edit segment. This was the seen_txid file in the sahred edits directory. The active namenode's local storage was containing valid looking seen_txid.