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From "Koji Noguchi (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1085) hftp read failing silently
Date Tue, 06 Apr 2010 22:51:33 GMT
hftp read  failing silently
---------------------------

                 Key: HDFS-1085
                 URL: https://issues.apache.org/jira/browse/HDFS-1085
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Koji Noguchi


When performing a massive distcp through hftp, we saw many tasks fail with 

{quote}
2010-04-06 17:56:43,005 INFO org.apache.hadoop.tools.DistCp: FAIL 2010/0/part-00032 : java.io.IOException:
File size not matched: copied 193855488 bytes (184.9m) to tmpfile (=hdfs://omehost.com:8020/somepath/part-00032)
but expected 1710327403 bytes (1.6g) from hftp://someotherhost/somepath/part-00032
        at org.apache.hadoop.tools.DistCp$CopyFilesMapper.copy(DistCp.java:435)
        at org.apache.hadoop.tools.DistCp$CopyFilesMapper.map(DistCp.java:543)
        at org.apache.hadoop.tools.DistCp$CopyFilesMapper.map(DistCp.java:310)
        at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:358)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
        at org.apache.hadoop.mapred.Child.main(Child.java:159)
{quote}

This means that read itself didn't fail but the resulted file was somehow smaller.


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