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From "Chris Trezzo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9173) replication_admin#get_peer_state(id) in ruby script pointing to undefined method `getPeerState'
Date Tue, 13 Aug 2013 03:54:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13737778#comment-13737778

Chris Trezzo commented on HBASE-9173:

bq. Should we add lightweight checks or do something like my patch does?

Maybe both? We could add a getPeerState(id) method to the ReplicationPeers interface. In ReplicationPeersZKImpl,
the getPeerState(id) implementation could just make a call to Zookeeper and return the contents
of the znode. ReplicationSource.shipEdits can still leverage getStatusOfConnectedPeer so that
it caches the PeerState locally. Also, I like the wait on the client side. I would much rather
have it there so we can still leverage the async perf gains on the server side.


The asynchrony involved with PeerStateTracker and ReplicationTrackerZKImpl definitely makes
things tricky :-)
> replication_admin#get_peer_state(id) in ruby script pointing to undefined method `getPeerState'
> -----------------------------------------------------------------------------------------------
>                 Key: HBASE-9173
>                 URL: https://issues.apache.org/jira/browse/HBASE-9173
>             Project: HBase
>          Issue Type: Bug
>          Components: scripts
>            Reporter: rajeshbabu
>            Assignee: Jean-Daniel Cryans
>            Priority: Critical
>             Fix For: 0.98.0, 0.95.2
>         Attachments: HBASE-9173.patch
> list_peers is failing because replication_admin#get_peer_state(id) pointing to the method
removed from ReplicationAdmin. We need to read peer state from ReplicationPeer.
> {code}
> hbase(main):003:0> list_peers
> ERROR: undefined method `getPeerState' for #<Java::OrgApacheHadoopHbaseClientReplication::ReplicationAdmin:0x7e299629>
> Here is some help for this command:
> List all replication peer clusters.
>   hbase> list_peers
> {code}
> {code}
>     # Get peer cluster state
>     def get_peer_state(id)
>       @replication_admin.getPeerState(id)
>     end
> {code}

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