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Vinay commented on HDFS-5869: ----------------------------- Oops. I had forgot that. Thanks for the update. > When rolling upgrade is in progress, NN should only create checkpoint right > before the upgrade marker > ----------------------------------------------------------------------------------------------------- > > Key: HDFS-5869 > URL: https://issues.apache.org/jira/browse/HDFS-5869 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: namenode > Reporter: Tsz Wo (Nicholas), SZE > Assignee: Tsz Wo (Nicholas), SZE > Attachments: h5869_20140204.patch, h5869_20140204b.patch > > > - When starting rolling upgrade, NN should create a checkpoint before it > writes the upgrade marker edit log transaction. > - When rolling upgrade is in progress, NN should reject saveNamespace rpc > calls. Further, if NN restarts, it should create a checkpoint only right > before the upgrade marker. -- This message was sent by Atlassian JIRA (v6.1.5#6160)