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https://issues.apache.org/jira/browse/HBASE-15160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16037508#comment-16037508
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Hadoop QA commented on HBASE-15160:
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| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12871291/hbase-15160_v8.branch-1.patch
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| JIRA Issue | HBASE-15160 |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/7079/console |
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This message was automatically generated.
> Put back HFile's HDFS op latency sampling code and add metrics for monitoring
> -----------------------------------------------------------------------------
>
> Key: HBASE-15160
> URL: https://issues.apache.org/jira/browse/HBASE-15160
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 2.0.0, 1.1.2
> Reporter: Yu Li
> Assignee: Yu Li
> Priority: Critical
> Attachments: HBASE-15160.patch, HBASE-15160_v2.patch,
> HBASE-15160_v3.patch, hbase-15160_v4.patch, hbase-15160_v5.patch,
> hbase-15160_v6.patch, hbase-15160_v7.patch, hbase-15160_v8.branch-1.patch,
> hbase-15160_v8.branch-1.patch, hbase-15160_v8.patch
>
>
> In HBASE-11586 all HDFS op latency sampling code, including fsReadLatency,
> fsPreadLatency and fsWriteLatency, have been removed. There was some
> discussion about putting them back in a new JIRA but never happened.
> According to our experience, these metrics are useful to judge whether issue
> lies on HDFS when slow request occurs, so we propose to put them back in this
> JIRA, and add the metrics for monitoring as well.
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