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Posted to hdfs-dev@hadoop.apache.org by "Suresh Srinivas (JIRA)" <ji...@apache.org> on 2012/05/10 01:35:52 UTC
[jira] [Created] (HDFS-3393) Rollback on newer release must not be
allowed if the layout version in the snapshot is for older release.
Suresh Srinivas created HDFS-3393:
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Summary: Rollback on newer release must not be allowed if the layout version in the snapshot is for older release.
Key: HDFS-3393
URL: https://issues.apache.org/jira/browse/HDFS-3393
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 1.0.0, 2.0.0, 3.0.0
Reporter: Suresh Srinivas
After upgrading to a new release, the procedure to rollback to older release is to start the namenode in older release with -rollback option.
As reported in HADOOP-8371, the rollback was allowed on the newer release. During rollback, namenode must allow rollback only if the layout version of the namenode matches that of the layout version in the snapshot that the namenode is rolling back to.
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