[HDFS-3950] QJM: misc TODO cleanup, improved log messages, etc

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: QuorumJournalManager (HDFS-3077)
• Fix Version/s: QuorumJournalManager (HDFS-3077)
• Component/s: ha
• Target Version/s: QuorumJournalManager (HDFS-3077)
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 18/Sep/12 20:36
• Updated: 19/Sep/12 23:30
• Resolved: 19/Sep/12 18:52

Description

General JIRA for a bunch of miscellaneous clean-up in the QJM branch:

• fix most remaining TODOs
• improve some log/error messages
• add some more sanity checks where appropriate
• address any findbugs that might have crept into branch