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From "Brett Randall (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-5478) File size reports as zero after writing and calling FSDataOutputStream#hsync()
Date Fri, 08 Nov 2013 05:18:17 GMT
Brett Randall created HDFS-5478:
-----------------------------------

             Summary: File size reports as zero after writing and calling FSDataOutputStream#hsync()
                 Key: HDFS-5478
                 URL: https://issues.apache.org/jira/browse/HDFS-5478
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.0.0-alpha
         Environment: RHEL/OEL 6u3
            Reporter: Brett Randall


Using a Java client to write to a FSDataOutputStream.  After some data is written and hsync()
is called, {{hdfs dfs -get /path/to/file}} gets a file containing the data written so-far,
all good.

{{hdfs dfs -ls /path/to/file}} however reports a zero-byte file, presumably until the stream
is closed (it then shows the correct size).  Hue File Browser (running CDH4) also shows zero
bytes until the stream is closed.

See also http://grokbase.com/t/hadoop/hdfs-user/113j63nrce/zero-file-size-after-hsync which
discusses the same problem.

After the buffer is flushed it would be good if the reported file size was updated.



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