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https://issues.apache.org/jira/browse/HBASE-20434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16449203#comment-16449203
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Duo Zhang commented on HBASE-20434:
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Talked with [~zghaobac] offline, a better way is always remove the remote wal
when the wal name is for a sync replication peer, no matter whether it is in A
or DA. Add we need to add UTs to confirm it.
> Also remove remote wals when peer is in DA state
> ------------------------------------------------
>
> Key: HBASE-20434
> URL: https://issues.apache.org/jira/browse/HBASE-20434
> Project: HBase
> Issue Type: Sub-task
> Reporter: Duo Zhang
> Priority: Major
>
> Consider we have two clusters in A and S state, and then we transit A to DA.
> And later we want to transit DA to A, since the remote cluster is in S, we
> should be able to do it. But there are some remote wals on the HDFS for the
> cluster in S state, so we need to remove them first before transiting the
> cluster in DA state to A.
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