[jira] [Updated] (HBASE-9286) ageOfLastShippedOp replication metric doesn't update if the regionserver is updated

["Alex Newman (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-9286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Newman updated HBASE-9286:
-------------------------------

    Assignee: Alex Newman
      Status: Patch Available  (was: Open)
    
> ageOfLastShippedOp replication metric doesn't update if the regionserver is updated
> -----------------------------------------------------------------------------------
>
>                 Key: HBASE-9286
>                 URL: https://issues.apache.org/jira/browse/HBASE-9286
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Alex Newman
>            Assignee: Alex Newman
>
> In replicationmanager
>      HRegionInterface rrs = getRS();
>         rrs.replicateLogEntries(Arrays.copyOf(this.entriesArray, currentNbEntries));
> ....
>         this.metrics.setAgeOfLastShippedOp(
>             this.entriesArray[currentNbEntries-1].getKey().getWriteTime());
>         break;
> which makes but is wrong. The problem is that rrs.replicateLogEntries will block for a very long time if the slave server is for instance suspended.
> However this is easy to fix. We just need to call       refreshAgeOfLastShippedOp();
> on a regular basis, in a different thread. I've attached a patch which fixed this for cdh4. I can make one for trunk and the like as well if you need me to do but it's a small change.

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