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https://issues.apache.org/jira/browse/HBASE-6904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13488273#comment-13488273
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Gregory Chanan commented on HBASE-6904:
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No, it's not a problem. I think my above comments address your concerns:
{quote}This error log is unnecessary, because the code already throws an
exception. The code that calls it can just decide if it wants to reprint the
error message or not by catching/rethrowing the exception. I looked through the
calls, which all originate in ZKUtil, and I think it's fine to just bump this
down to "info" level. All the calls in ZKUtil either rethrow the exception or
have semantics where getting a NodeExists exception is not a problem.{quote}
> In the HBase shell, an error is thrown that states replication-related znodes
> already exist
> -------------------------------------------------------------------------------------------
>
> Key: HBASE-6904
> URL: https://issues.apache.org/jira/browse/HBASE-6904
> Project: HBase
> Issue Type: Bug
> Components: Replication, Zookeeper
> Affects Versions: 0.92.0, 0.92.1, 0.96.0
> Reporter: Aleksandr Shulman
> Assignee: Gregory Chanan
> Priority: Minor
> Fix For: 0.94.3, 0.96.0
>
> Attachments: HBASE-6904-94.patch, HBASE-6904.patch
>
>
> On a replication-enabled cluster, querying the list_peers produces the error
> lines shown below. It doesn't appear that anything is broken in terms of
> functionality.
> Stack trace:
> hbase(main):001:0> list_peers
> 12/09/29 14:41:03 ERROR zookeeper.RecoverableZooKeeper: Node
> /hbase/replication/peers already exists and this is not a retry
> 12/09/29 14:41:03 ERROR zookeeper.RecoverableZooKeeper: Node
> /hbase/replication/rs already exists and this is not a retry
> PEER ID CLUSTER KEY
> 0 row(s) in 0.4650 seconds
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