Wei-Chiu Chuang created HBASE-20686:
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             Summary: Asyncfs should retry upon RetryStartFileException
                 Key: HBASE-20686
                 URL: https://issues.apache.org/jira/browse/HBASE-20686
             Project: HBase
          Issue Type: Bug
          Components: asyncclient
    Affects Versions: 2.0.0-beta-1
         Environment: HBase 2.0, Hadoop 3 with at-rest encryption

            Reporter: Wei-Chiu Chuang
            Assignee: Wei-Chiu Chuang


In Hadoop-2.6 and above, HDFS client retries on RetryStartFileException when 
NameNode experience encryption zone related issue. The code exists in 
DFSOutputStream#newStreamForCreate(). (HDFS-6970)

In HBase-2's asyncfs implementation, 
FanOutOneBlockAsyncDFSOutputHelper#createOutput() is somewhat an imitation of 
HDFS's DFSOutputStream#newStreamForCreate(). However it does not retry upon 
RetryStartFileException. So it is less resilient to such issues.

Also, DFSOutputStream#newStreamForCreate() upwraps RemoteExceptions, but 
asyncfs does not. Therefore, hbase gets different exceptions than before.

File this jira to get this corrected.



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