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Posted to issues@hbase.apache.org by "Wellington Chevreuil (JIRA)" <ji...@apache.org> on 2018/11/04 00:53:00 UTC
[jira] [Updated] (HBASE-21406) "status 'replication'" should not
show SINK if the cluster does not act as sink
[ https://issues.apache.org/jira/browse/HBASE-21406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wellington Chevreuil updated HBASE-21406:
-----------------------------------------
Attachment: HBASE-21406-branch-1.001.patch
> "status 'replication'" should not show SINK if the cluster does not act as sink
> -------------------------------------------------------------------------------
>
> Key: HBASE-21406
> URL: https://issues.apache.org/jira/browse/HBASE-21406
> Project: HBase
> Issue Type: Improvement
> Reporter: Daisuke Kobayashi
> Assignee: Wellington Chevreuil
> Priority: Minor
> Attachments: HBASE-21406-branch-1.001.patch, Screen Shot 2018-10-31 at 18.12.54.png
>
>
> When replicating in 1 way, from source to target, {{status 'replication'}} on source always dumps SINK with meaningless metrics. It only makes sense when running the command on target cluster.
> {{status 'replication'}} on source, for example. {{AgeOfLastAppliedOp}} is always zero and {{TimeStampsOfLastAppliedOp}} does not get updated from the time the RS started since it's not acting as sink.
> {noformat}
> source-1.com
> SOURCE: PeerID=1, AgeOfLastShippedOp=0, SizeOfLogQueue=0, TimeStampsOfLastShippedOp=Mon Oct 29 23:44:14 PDT 2018, Replication Lag=0
> SINK : AgeOfLastAppliedOp=0, TimeStampsOfLastAppliedOp=Thu Oct 25 23:56:53 PDT 2018
> {noformat}
> {{status 'replication'}} on target works as expected. SOURCE is empty as it's not acting as source:
> {noformat}
> target-1.com
> SOURCE:
> SINK : AgeOfLastAppliedOp=70, TimeStampsOfLastAppliedOp=Mon Oct 29 23:44:08 PDT 2018
> {noformat}
> This is because {{getReplicationLoadSink}}, called in {{admin.rb}}, always returns a value (not null).
> 1.X
> https://github.com/apache/hbase/blob/rel/1.4.0/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerLoad.java#L194-L204
> 2.X
> https://github.com/apache/hbase/blob/rel/2.0.0/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerLoad.java#L392-L399
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