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https://issues.apache.org/jira/browse/HBASE-11544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14370182#comment-14370182
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Lars Hofhansl commented on HBASE-11544:
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[~stack], Have a look at HBASE-12976 and HBASE-13262. It's pretty messed up.
HBASE-12976 needed to be reverted due to what we found in HBASE-12362, this one
relies on it (otherwise most scans will now OOM).
I can leave this one in, since we do not have a release for 1.1 or 2.0, but I
assume many tests will now fail with OOMs. Or I can put HBASE-12976 for 1.1 and
2.0 for the same reason. (maybe I was a bit hasty with the revert in those
branches).
I don't think a dev-list discussion will help. The revert for HBASE-12976 is a
blocker for 0.98.
> [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: Lars Hofhansl
> 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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