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https://issues.apache.org/jira/browse/HBASE-13647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14566396#comment-14566396
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Nicolas Liochon commented on HBASE-13647:
-----------------------------------------

I would recommend 20 minutes. The idea is that if a machine fails and the 
recovery needs a hdfs timeout (10:30 mins) we have some extra time. As well, 
iirc with the default retries number and pause we around 15 minutes today. It 
seems better to default above that. 

I kept the operation timeout in the htable stuff (but it's not me who put it 
there :-) ), but now I wonder if we should not just remove it from this code 
path: it overlaps with the number of retries, and does it add that much value?

> Default value for hbase.client.operation.timeout is too high
> ------------------------------------------------------------
>
>                 Key: HBASE-13647
>                 URL: https://issues.apache.org/jira/browse/HBASE-13647
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0, 1.0.1, 0.98.13, 1.2.0, 1.1.1
>            Reporter: Andrey Stepachev
>            Assignee: Andrey Stepachev
>            Priority: Blocker
>             Fix For: 2.0.0, 0.98.13, 1.0.2, 1.2.0, 1.1.1
>
>         Attachments: HBASE-13647.patch, HBASE-13647.v2.patch
>
>
> Default value for hbase.client.operation.timeout is too high, it is LONG.Max.
> That value will block any service calls to coprocessor endpoints indefinitely.
> Should we introduce better default value for that?



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