Todd Lipcon created HDFS-3863: --------------------------------- Summary: QJM: track last "committed" txid Key: HDFS-3863 URL: https://issues.apache.org/jira/browse/HDFS-3863 Project: Hadoop HDFS Issue Type: Sub-task Components: ha Affects Versions: QuorumJournalManager (HDFS-3077) Reporter: Todd Lipcon Assignee: Todd Lipcon
Per some discussion with [~stepinto] [here|https://issues.apache.org/jira/browse/HDFS-3077?focusedCommentId=13422579&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13422579], we should keep track of the "last committed txid" on each JournalNode. Then during any recovery operation, we can sanity-check that we aren't asked to truncate a log to an earlier transaction. This is also a necessary step if we want to support reading from in-progress segments in the future (since we should only allow reads up to the commit point) -- 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