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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5439) FileSystem.create() with overwrite param specified sometimes takes a long time to return.
Date Mon, 09 Mar 2009 06:26:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12680075#action_12680075
] 

Zheng Shao commented on HADOOP-5439:
------------------------------------

The new code block may have a concurrent issue in case 2 clients are operating on the same
file.

We should fix the slow response of create with overwrite. Some profiling will be very useful
here to identify the real cause.


> FileSystem.create() with overwrite param specified sometimes takes a long time to return.
> -----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-5439
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5439
>             Project: Hadoop Core
>          Issue Type: Bug
>    Affects Versions: 0.19.0
>            Reporter: he yongqiang
>
> If a file already exists, it takes a long time for the overwrite create to return.
> {code}
> fs.create(path_1, true);
> {code}
> sometimes takes a long time. 
> Instead, the code:
> {code}
> if (fs.exists(path_1))
>     fs.delete(path_1);
> fs.create(path_1);
> {code}
> works pretty well.

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