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Posted to issues@hbase.apache.org by "Himanshu Vashishtha (JIRA)" <ji...@apache.org> on 2013/08/06 22:54:48 UTC
[jira] [Assigned] (HBASE-9141) Replication Znodes Backup Tool
[ https://issues.apache.org/jira/browse/HBASE-9141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Himanshu Vashishtha reassigned HBASE-9141:
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Assignee: Himanshu Vashishtha
> 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
> Assignee: Himanshu Vashishtha
> Fix For: 0.95.2
>
> Attachments: 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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