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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-11544) [Ergonomics] hbase.client.scanner.caching is dogged and will try to return batch even if it means OOME
Date Thu, 05 Mar 2015 02:05:43 GMT

     [ https://issues.apache.org/jira/browse/HBASE-11544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-11544:
--------------------------
       Resolution: Fixed
    Fix Version/s: 1.1.0
                   2.0.0
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

Pushed to branch-1+. Thank you for the very sweet building block [~jonathan.lawlor] fixing
a long-standing issue.

> [Ergonomics] hbase.client.scanner.caching is dogged and will try to return batch even
if it means OOME
> ------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-11544
>                 URL: https://issues.apache.org/jira/browse/HBASE-11544
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: Jonathan Lawlor
>            Priority: Critical
>              Labels: beginner
>             Fix For: 2.0.0, 1.1.0
>
>         Attachments: HBASE-11544-branch_1_0-v1.patch, HBASE-11544-branch_1_0-v2.patch,
HBASE-11544-v1.patch, HBASE-11544-v2.patch, HBASE-11544-v3.patch, HBASE-11544-v4.patch, HBASE-11544-v5.patch,
HBASE-11544-v6.patch, HBASE-11544-v6.patch, HBASE-11544-v6.patch, HBASE-11544-v7.patch, HBASE-11544-v8-branch-1.patch,
HBASE-11544-v8.patch, gc.j.png, hits.j.png, mean.png, net.j.png
>
>
> Running some tests, I set hbase.client.scanner.caching=1000.  Dataset has large cells.
 I kept OOME'ing.
> Serverside, we should measure how much we've accumulated and return to the client whatever
we've gathered once we pass out a certain size threshold rather than keep accumulating till
we OOME.



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