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Kihwal Lee commented on HDFS-5526: ---------------------------------- [~szetszwo], I've committed this to branch-2, branch-0.23 and trunk. Please pull into other branches as see fit and resolve this jira. > Datanode cannot roll back to previous layout version > ---------------------------------------------------- > > Key: HDFS-5526 > URL: https://issues.apache.org/jira/browse/HDFS-5526 > Project: Hadoop HDFS > Issue Type: Bug > Components: datanode > Reporter: Tsz Wo (Nicholas), SZE > Assignee: Kihwal Lee > Priority: Blocker > Fix For: 3.0.0, 2.3.0, 0.23.10 > > Attachments: HDFS-5526.patch, HDFS-5526.patch > > > Current trunk layout version is -48. > Hadoop v2.2.0 layout version is -47. > If a cluster is upgraded from v2.2.0 (-47) to trunk (-48), the datanodes > cannot start with -rollback. It will fail with IncorrectVersionException. -- This message was sent by Atlassian JIRA (v6.1#6144)