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https://issues.apache.org/jira/browse/HBASE-2195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13097017#comment-13097017
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Lars Hofhansl commented on HBASE-2195:
--------------------------------------
Actually even the current code is not safe against an old key (before cluster
id was introduced).
See HLogKey.readFields(), see only guard is catching EOFE, which will only be
triggered at the end of a file.
> Support cyclic replication
> --------------------------
>
> Key: HBASE-2195
> URL: https://issues.apache.org/jira/browse/HBASE-2195
> Project: HBase
> Issue Type: Sub-task
> Components: replication
> Reporter: Jean-Daniel Cryans
> Attachments: 2195-v5.txt, 2195.txt
>
>
> We need to support cyclic replication by using the cluster id of each HlogKey
> and stop replicating when it goes back to the original cluster.
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