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From "Geoffrey Jacoby (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-5358) Metrics for the GlobalIndexChecker coprocessor
Date Tue, 02 Jul 2019 21:17:00 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-5358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Geoffrey Jacoby updated PHOENIX-5358:
-------------------------------------
    Fix Version/s: 5.1.0
                   4.15.0

> Metrics for the GlobalIndexChecker coprocessor
> ----------------------------------------------
>
>                 Key: PHOENIX-5358
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5358
>             Project: Phoenix
>          Issue Type: Improvement
>    Affects Versions: 4.13.1, 5.0.0, 4.15.0, 4.14.2
>            Reporter: Kadir OZDEMIR
>            Assignee: Swaroopa Kadam
>            Priority: Major
>             Fix For: 4.15.0, 5.1.0, 4.14.3
>
>
> The GlobalIndexChecker coprocessor is responsible for checking if an index row is "verified",
that is, has completed its most recent two-phase write operation, during scans.  If the
row is not verified then the coprocessor rebuilds the row using a read-repair technique. The
read-repair operations should be rare but add extra latency on the scan operations. We need
to know how many read-repair operations happen and how long they take. Thus, we need metrics
on them.



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