[jira] [Created] (HDFS-4525) Provide an API for knowing that whether file is closed or not.

["Uma Maheswara Rao G (JIRA)" <ji...@apache.org>]

Uma Maheswara Rao G created HDFS-4525:
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             Summary: Provide an API for knowing that whether file is closed or not.
                 Key: HDFS-4525
                 URL: https://issues.apache.org/jira/browse/HDFS-4525
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: namenode
    Affects Versions: 2.0.3-alpha, 3.0.0
            Reporter: Uma Maheswara Rao G


Currently recoverLease API will return true if file is already closed. Otherwise it will trigger internalLease recovery and return false. It may take some time to really complete this recovery and file to be closed completely. So, there is noway for the users to wait correctly until file is closed completely. 
It would good if we have one API which says whether that file is closed or not. So, that users can relay on that proceed further if and only if file is closed completely.

See the discussion in HBASE-7878

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