[jira] [Created] (HDFS-11917) Why when using the hdfs nfs gateway, a file which is smaller than one block size required a block

["BINGHUI WANG (JIRA)" <ji...@apache.org>]

BINGHUI WANG created HDFS-11917:
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             Summary: Why when using the hdfs nfs gateway, a file which is smaller than one block size required a block
                 Key: HDFS-11917
                 URL: https://issues.apache.org/jira/browse/HDFS-11917
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: nfs
    Affects Versions: 2.8.0
            Reporter: BINGHUI WANG


I use the linux shell to put the file into the hdfs throuth the hdfs nfs gateway. I found that if the file which size is smaller than one block(128M), it will still takes one block(128M) of hdfs storage by this way. But after a few minitues the excess storage will be released.
e.g:If I put the file(60M) into the hdfs throuth the hdfs nfs gateway, it will takes one block(128M) at first. After a few minitues the excess storage(68M) will
be released. The file only use 60M hdfs storage at last.
Why is will be this?



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