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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-7192) DN should ignore lazyPersist hint if the writer is not local
Date Sat, 04 Oct 2014 01:47:34 GMT
Arpit Agarwal created HDFS-7192:
-----------------------------------

             Summary: DN should ignore lazyPersist hint if the writer is not local
                 Key: HDFS-7192
                 URL: https://issues.apache.org/jira/browse/HDFS-7192
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: datanode
    Affects Versions: 3.0.0
            Reporter: Arpit Agarwal


The DN should ignore {{allowLazyPersist}} hint to {{DataTransferProtocol#writeBlock}} if the
writer is not local.

Currently we don't restrict memory writes to local clients. For in-cluster clients this is
not an issue as single replica writes default to the local DataNode. But clients outside the
cluster can still send this hint.



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