[ https://issues.apache.org/jira/browse/HDFS-3077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved HDFS-3077. ------------------------------- Resolution: Fixed Fix Version/s: 2.0.3-alpha Committed backport to branch-2. Thanks for looking at the backport patch, Andrew and Aaron. > Quorum-based protocol for reading and writing edit logs > ------------------------------------------------------- > > Key: HDFS-3077 > URL: https://issues.apache.org/jira/browse/HDFS-3077 > Project: Hadoop HDFS > Issue Type: New Feature > Components: ha, namenode > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Fix For: 3.0.0, QuorumJournalManager (HDFS-3077), 2.0.3-alpha > > Attachments: hdfs-3077-branch-2.txt, hdfs-3077-partial.txt, > hdfs-3077-test-merge.txt, hdfs-3077.txt, hdfs-3077.txt, hdfs-3077.txt, > hdfs-3077.txt, hdfs-3077.txt, hdfs-3077.txt, hdfs-3077.txt, > qjournal-design.pdf, qjournal-design.pdf, qjournal-design.pdf, > qjournal-design.pdf, qjournal-design.pdf, qjournal-design.pdf, > qjournal-design.tex, qjournal-design.tex > > > Currently, one of the weak points of the HA design is that it relies on > shared storage such as an NFS filer for the shared edit log. One alternative > that has been proposed is to depend on BookKeeper, a ZooKeeper subproject > which provides a highly available replicated edit log on commodity hardware. > This JIRA is to implement another alternative, based on a quorum commit > protocol, integrated more tightly in HDFS and with the requirements driven > only by HDFS's needs rather than more generic use cases. More details to > follow. -- 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