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From "Swaroopa Kadam (JIRA)" <>
Subject [jira] [Assigned] (PHOENIX-5358) Metrics for the GlobalIndexChecker coprocessor
Date Thu, 27 Jun 2019 02:26:00 GMT


Swaroopa Kadam reassigned PHOENIX-5358:

    Assignee: Swaroopa Kadam

> Metrics for the GlobalIndexChecker coprocessor
> ----------------------------------------------
>                 Key: PHOENIX-5358
>                 URL:
>             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
> 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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