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Posted to issues@kudu.apache.org by "Adar Dembo (JIRA)" <ji...@apache.org> on 2019/07/25 22:40:01 UTC

[jira] [Updated] (KUDU-2581) Reject the scan request if it has reached the num or memory threshold

     [ https://issues.apache.org/jira/browse/KUDU-2581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adar Dembo updated KUDU-2581:
-----------------------------
    Fix Version/s:     (was: NA)

> Reject the scan request if it has reached the num or memory threshold
> ---------------------------------------------------------------------
>
>                 Key: KUDU-2581
>                 URL: https://issues.apache.org/jira/browse/KUDU-2581
>             Project: Kudu
>          Issue Type: New Feature
>          Components: tserver
>    Affects Versions: NA
>            Reporter: Hexin
>            Priority: Major
>
> Sometimes we have a lot of scan, which may excess the soft memory limit. The greater the excess, the higher the chance of causing throttling for writing. We should achieve a method that rejecting the scan request if it has reached the soft memory limit or the scanner num has reached the threshold. The threshold should be estimated by the actual memory of the system running the kudu. By this way，the system can provide more space for writing.
>  



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