[jira] [Created] (HDFS-6633) Support reading new data in a being written file untill the file is closed

["Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org>]

Tsz Wo Nicholas Sze created HDFS-6633:
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             Summary: Support reading new data in a being written file untill the file is closed
                 Key: HDFS-6633
                 URL: https://issues.apache.org/jira/browse/HDFS-6633
             Project: Hadoop HDFS
          Issue Type: New Feature
          Components: hdfs-client
            Reporter: Tsz Wo Nicholas Sze
            Assignee: Tsz Wo Nicholas Sze


When a file is being written, the file length keeps increasing.  If the file is opened for read, the reader first gets the file length and then read only up to that length.  The reader will not be able to read the new data written afterward.

We propose adding a new feature so that readers will be able to read all the data until the writer closes the file.



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