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Posted to common-dev@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org> on 2009/10/10 00:32:31 UTC

[jira] Created: (HADOOP-6307) Support reading on un-closed SequenceFile

Support reading on un-closed SequenceFile
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                 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


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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