[jira] [Updated] (IMPALA-7095) Improve scanner thread counters in HDFS and Kudu scans

["Quanlong Huang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-7095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Quanlong Huang updated IMPALA-7095:
-----------------------------------
    Fix Version/s: Impala 2.13.0

> Improve scanner thread counters in HDFS and Kudu scans
> ------------------------------------------------------
>
>                 Key: IMPALA-7095
>                 URL: https://issues.apache.org/jira/browse/IMPALA-7095
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Backend
>    Affects Versions: Impala 3.0
>            Reporter: Tim Armstrong
>            Assignee: Tim Armstrong
>            Priority: Major
>              Labels: observability
>             Fix For: Impala 2.13.0, Impala 3.1.0
>
>
> There are a few deficiencies here:
> * We don't track the peak number of scanner threads. Consumers of the profile often confuse NumScannerThreadsStarted with the peak.
> * Kudu scans are missing some metrics, e.g. AverageScannerThreadConcurrency. We should make sure that Kudu and HDFS are consistent.
> We should clean this up, and maybe refactor the code so that less logic is duplicated



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