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From Peyman Mohajerian <mohaj...@gmail.com>
Subject Re: A non-empty file's size is reported as 0
Date Tue, 08 Apr 2014 13:17:38 GMT
If you didn't close the file correctly then NameNode wouldn't be notified
of the final size of the file. The file size is meta-data coming from
NameNode.


On Tue, Apr 8, 2014 at 4:35 AM, Tao Xiao <xiaotao.cs.nju@gmail.com> wrote:

> I wrote some data into a file using MultipleOutputs in mappers. I can see
> the contents in this file using "hadoop fs -ls <file>", but its size is
> reported as zero by the command "hadoop fs -du <file>" or "hadoop fs -ls
> <file>" , as follows:
>
> -rw-r--r--   3 hadoop hadoop         0 2014-04-07 22:06
> /test/xt/out/2014-01-20/-m-00000
>
> BTW, when I download this file from HDFS to local file system, I can see
> the correct size. Why is it reported as zero size in hadoop CLI?
>
>
>

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