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https://issues.apache.org/jira/browse/HBASE-9141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13733693#comment-13733693
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Himanshu Vashishtha commented on HBASE-9141:
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The attached patch has the following changes:
1) Include a test cases where it create-->serializes-->delete existing-->
restores znodes. It checks whether the data is restored or not, etc.
2) The znodes are saved with relative path, starting from replication base
znode (by default, from replication/). This is useful in case a user wants to
restore under a different hbase root znode.
3) Options to delete existing znode (after taking the backup, or before
restoring the znodes); option to delete the backup file after successful
restoration.
4) Other nits suggested by Ted. More help documentation on "moving" znodes.
> 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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