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Date: Sun, 6 Nov 2011 20:07:52 +0000 (UTC)
From: "Uma Maheswara Rao G (Commented) (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-989) Flush/sync do not work on Hadoop
 LocalFileSystem
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    [ https://issues.apache.org/jira/browse/HDFS-989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13145091#comment-13145091 ] 

Uma Maheswara Rao G commented on HDFS-989:
------------------------------------------

Reason for not working is, ChecksumFSOutputSummer will hold the data and checksum streams.
 but did not implemented the flush. So, simply it delegates to OutPutStream. So, no data will be flushed.
                
> Flush/sync do not work on Hadoop LocalFileSystem
> ------------------------------------------------
>
>                 Key: HDFS-989
>                 URL: https://issues.apache.org/jira/browse/HDFS-989
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.20.1
>            Reporter: Nathan Marz
>
> They seem to be no-ops. This is really easy to reproduce, just open a file using FileSystem/getLocal(new Configuration()), write data to the output stream, and then try to flush/sync. I also tried creating the output stream with a buffer size of 1, but that had no effect.

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