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Todd Lipcon commented on HDFS-3870: ----------------------------------- Just realized I never commented to respond to Chao's suggestion. It was a good one, so it's included in the patch. Will commit momentarily. > 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 > Attachments: hdfs-3870.txt > > > 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira