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https://issues.apache.org/jira/browse/HADOOP-6307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12784534#action_12784534
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Hudson commented on HADOOP-6307:
--------------------------------
Integrated in Hadoop-Common-trunk-Commit #95 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-Common-trunk-Commit/95/])
. Add a new SequenceFile.Reader constructor in order to support reading on
un-closed file.
> Support reading on un-closed SequenceFile
> -----------------------------------------
>
> Key: HADOOP-6307
> URL: https://issues.apache.org/jira/browse/HADOOP-6307
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: 0.21.0, 0.22.0
>
> Attachments: c6307_20091124.patch, c6307_20091130.patch,
> c6307_20091201.patch
>
>
> When a SequenceFile.Reader is constructed, it calls
> fs.getFileStatus(file).getLen(). However, fs.getFileStatus(file).getLen()
> does not return the hflushed length for un-closed file since the Namenode
> does not know the hflushed length. DFSClient have to ask a datanode for the
> length last block which is being written; see also HDFS-570.
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