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https://issues.apache.org/jira/browse/HBASE-9286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13748222#comment-13748222
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Alex Newman commented on HBASE-9286:
------------------------------------
Just printing out what is sent to the server
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 2321
1377059826
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 4092
1377059836
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 1695
1377059846
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 7575
1377059856
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 17576
1377059866
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 27575
1377059876
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 37575
1377059886
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 2899
1377059896
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 2853
1377059906
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 4006
1377059916
metric:Platform.HBase.hbase.posix4e-Satellite-S55-A.ageOfLastShippedOp 429
1377059926
I suspeded the replication server at around 1377059856 and unsuspended around
1377059896
> ageOfLastShippedOp replication metric doesn't update if the slave
> regionserver is stalled
> -----------------------------------------------------------------------------------------
>
> Key: HBASE-9286
> URL: https://issues.apache.org/jira/browse/HBASE-9286
> Project: HBase
> Issue Type: Bug
> Reporter: Alex Newman
> Assignee: Alex Newman
> Attachments:
> 0001-HBASE-9286.-ageOfLastShippedOp-replication-metric-do.patch
>
>
> In replicationmanager
> HRegionInterface rrs = getRS();
> rrs.replicateLogEntries(Arrays.copyOf(this.entriesArray,
> currentNbEntries));
> ....
> this.metrics.setAgeOfLastShippedOp(
> this.entriesArray[currentNbEntries-1].getKey().getWriteTime());
> break;
> which makes sense, but is wrong. The problem is that rrs.replicateLogEntries
> will block for a very long time if the slave server is suspended or
> unavailable but not down.
> 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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