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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8270) create() always retried with hardcoded timeout when file already exists
Date Wed, 27 May 2015 07:38:17 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14560569#comment-14560569
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Vinayakumar B commented on HDFS-8270:
-------------------------------------

Hi [~umamaheswararao] you have thoughts about this?

> create() always retried with hardcoded timeout when file already exists
> -----------------------------------------------------------------------
>
>                 Key: HDFS-8270
>                 URL: https://issues.apache.org/jira/browse/HDFS-8270
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 2.6.0
>            Reporter: Andrey Stepachev
>            Assignee: J.Andreina
>
> In Hbase we stumbled on unexpected behaviour, which could 
> break things. 
> HDFS-6478 fixed wrong exception
> translation, but that apparently led to unexpected bahaviour:
> clients trying to create file without override=true will be forced
> to retry hardcoded amount of time (60 seconds).
> That could break or slowdown systems, that use filesystem
> for locks (like hbase fsck did, and we got it broken HBASE-13574).
> We should make this behaviour configurable, do client really need
> to wait lease timeout to be sure that file doesn't exists, or it it should
> be enough to fail fast.



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