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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13919) Rationaliize Client Timeout
Date Tue, 16 Jun 2015 19:52:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14588651#comment-14588651
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Lars Hofhansl commented on HBASE-13919:
---------------------------------------

Here are some of the settings: 
* hbase.client.retries.number
* hbase.client.pause
* hbase.rpc.timeout
* hbase.client.scanner.timeout.period
* hbase.client.operation.timeout
* hbase.client.meta.operation.timeout
* hbase.rpc.shortoperation.timeout
* zookeeper.recovery.retry
* zookeeper.session.timeout
* zookeeper.recovery.retry.intervalmill

It's hard to understand what all of these mean and how they interact. I'm going to start by
documenting all of these (unless they are already), and then see whether we actually need
so many option, or whether we can derive some settings from the others.
Also it seems the defaults still lead to 20m overall timeout when ZK and HBase servers are
down.

> Rationaliize Client Timeout
> ---------------------------
>
>                 Key: HBASE-13919
>                 URL: https://issues.apache.org/jira/browse/HBASE-13919
>             Project: HBase
>          Issue Type: Brainstorming
>            Reporter: Lars Hofhansl
>
> There are current many setting that influence how/when an HBase client times out.
> This is hard to configure, hard to understand, and badly documented.
> Instead there should as few tweaks as needed, and their setting should make sense.



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