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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12827) WebHdfs socket timeouts should be configurable
Date Mon, 22 Feb 2016 16:56:18 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15157269#comment-15157269
] 

Xiaoyu Yao commented on HADOOP-12827:
-------------------------------------

One disadvantage of configurable timeout key is it is hard to tune. But I agree it is complementary
to retry when the default timeout does not work.

> WebHdfs socket timeouts should be configurable
> ----------------------------------------------
>
>                 Key: HADOOP-12827
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12827
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>         Environment: all
>            Reporter: Austin Donnelly
>            Assignee: Austin Donnelly
>              Labels: easyfix, newbie
>         Attachments: HADOOP-12827.001.patch
>
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> WebHdfs client connections use sockets with fixed timeouts of 60 seconds to connect,
and 60 seconds for reads.
> This is a problem because I am trying to use WebHdfs to access an archive storage system
which can take minutes to hours to return the requested data over WebHdfs.
> The fix is to add new configuration file options to allow these 60s defaults to be customised
in hdfs-site.xml.
> If the new configuration options are not present, the behavior is unchanged from before.



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