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Posted to issues@kudu.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2017/04/27 22:05:04 UTC

[jira] [Resolved] (KUDU-1953) MemTracker root tracker consumption is rarely updated

     [ https://issues.apache.org/jira/browse/KUDU-1953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon resolved KUDU-1953.
-------------------------------
       Resolution: Fixed
         Assignee: Todd Lipcon
    Fix Version/s: 1.4.0

In 2be32d5441827e0914ad9b5008545003bfda4575 I decoupled the root memtracker from tcmalloc, and made the throttling depend directly on tcmalloc. So, the root tracker is just a simple sum of its descendants, but mem rejections should be accurate.

> MemTracker root tracker consumption is rarely updated
> -----------------------------------------------------
>
>                 Key: KUDU-1953
>                 URL: https://issues.apache.org/jira/browse/KUDU-1953
>             Project: Kudu
>          Issue Type: Bug
>          Components: tserver
>    Affects Versions: 1.3.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>             Fix For: 1.4.0
>
>
> Related to KUDU-1762, I've notied that the root tracker memory consumption is rarely (never?) updated. This means that our memory backpressure may be very inaccurate in some cases.



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