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Posted to issues@hbase.apache.org by "Himanshu Vashishtha (JIRA)" <ji...@apache.org> on 2013/08/06 19:45:48 UTC

[jira] [Created] (HBASE-9141) Save replication znodes while migrating to 0.96

Himanshu Vashishtha created HBASE-9141:
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             Summary: Save replication znodes while migrating to 0.96
                 Key: HBASE-9141
                 URL: https://issues.apache.org/jira/browse/HBASE-9141
             Project: HBase
          Issue Type: Improvement
          Components: migration, Replication
    Affects Versions: 0.94.10
            Reporter: Himanshu Vashishtha
             Fix For: 0.95.2


While migrating to 0.96, we recommend deleting old znodes so users not face issues like HBASE-7766, and let HBase create them out of box.
Though HBase tends to store only ephemeral data in zookeeper, replication has a different approach. Almost all of its data (state, peer info, logs, etc) is present in zookeeper. We would like to preserve them in order to not do re-adding of peers, and ensuring complete replication after we have migrated to 0.96. 
This jira adds a tool to serialize/de-serialize replication znodes to the underlying filesystem. This could be used while migrating to 0.96.0.

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