Todd Lipcon created HDFS-3870:
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Summary: QJM: add metrics to JournalNode
Key: HDFS-3870
URL: https://issues.apache.org/jira/browse/HDFS-3870
Project: Hadoop HDFS
Issue Type: Sub-task
Affects Versions: QuorumJournalManager (HDFS-3077)
Reporter: Todd Lipcon
Assignee: Todd Lipcon
The JournalNode should expose some basic metrics through the usual interface.
In particular:
- the writer epoch, accepted epoch,
- the last written transaction ID and last committed txid (which may be newer
in case that it's in the process of catching up)
- latency information for how long the syncs are taking
Please feel free to suggest others that come to mind.
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