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https://issues.apache.org/jira/browse/HBASE-18023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16098233#comment-16098233
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Josh Elser commented on HBASE-18023:
------------------------------------

Sounds like we need to tweak the defaults. Do you still have the log messages 
around that you can share?

> Log multi-* requests for more than threshold number of rows
> -----------------------------------------------------------
>
>                 Key: HBASE-18023
>                 URL: https://issues.apache.org/jira/browse/HBASE-18023
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Clay B.
>            Assignee: David Harju
>            Priority: Minor
>             Fix For: 2.0.0, 3.0.0, 1.4.0, 1.3.2
>
>         Attachments: HBASE-18023-branch-1.3.patch, 
> HBASE-18023-branch-1.patch, HBASE-18023.master.001.patch, 
> HBASE-18023.master.002.patch, HBASE-18023.master.003.patch, 
> HBASE-18023.master.004.patch
>
>
> Today, if a user happens to do something like a large multi-put, they can get 
> through request throttling (e.g. it is one request) but still crash a region 
> server with a garbage storm. We have seen regionservers hit this issue and it 
> is silent and deadly. The RS will report nothing more than a mysterious 
> garbage collection and exit out.
> Ideally, we could report a large multi-* request before starting it, in case 
> it happens to be deadly. Knowing the client, user and how many rows are 
> affected would be a good start to tracking down painful users.



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