[HDFS-3798] Avoid throwing NPE when finalizeSegment() is called on invalid segment

• Type: Sub-task
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: QuorumJournalManager (HDFS-3077)
• Fix Version/s: QuorumJournalManager (HDFS-3077)
• Component/s: ha
• Hadoop Flags: Reviewed
• Target Version/s: QuorumJournalManager (HDFS-3077)
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 13/Aug/12 23:48
• Updated: 15/Aug/12 01:55
• Resolved: 15/Aug/12 01:55

Description

Currently, if the client calls finalizeLogSegment() on a segment which doesn't exist on the JournalNode side, it throws an NPE. Instead it should throw a more intelligible exception.