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Posted to issues@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2015/04/22 02:38:00 UTC

[jira] [Updated] (HBASE-9141) Replication Znodes Backup Tool

     [ https://issues.apache.org/jira/browse/HBASE-9141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell updated HBASE-9141:
----------------------------------
    Resolution: Incomplete
      Assignee:     (was: Himanshu Vashishtha)
        Status: Resolved  (was: Patch Available)

> Replication Znodes Backup Tool
> ------------------------------
>
>                 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
>         Attachments: HBase-9141-v1.patch, HBase-9141.patch
>
>
> 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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