[HBASE-15699] Can not sync AsyncFSWAL if no edit is appended

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: wal
• Hadoop Flags: Reviewed
• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 23/Apr/16 14:12
• Updated: 25/Apr/16 07:48
• Resolved: 25/Apr/16 05:28

Description

The problem is the txid that we assign to SyncFuture. In AsyncFSWAL, we will assign a zero txid if no edit is append, and it just equals to SyncFuture.NOT_DONE, so the sync request will never finish...