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From "Himanshu Vashishtha (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-8156) Support for Namenode HA for non-idempotent operations
Date Wed, 20 Mar 2013 17:29:15 GMT
Himanshu Vashishtha created HBASE-8156:

             Summary: Support for Namenode HA for non-idempotent operations
                 Key: HBASE-8156
                 URL: https://issues.apache.org/jira/browse/HBASE-8156
             Project: HBase
          Issue Type: Improvement
          Components: Filesystem Integration
    Affects Versions: 0.95.0
            Reporter: Himanshu Vashishtha
            Assignee: Himanshu Vashishtha
             Fix For: 0.98.0

In hadoop 2 HA, non-idempotent operations are not retried at the hdfs side. This is by design
as retrying a non-idempotent operation might not be a good design choice for some use case.

HBase needs to handle the retries for such operations at its end. 
With HBase-7806, there is already some work going on for file system abstractions. There,
HReginFileSystem sits as an abstraction between region and FS. This jira is a move in the
same direction, where it adds retry functionality for non-idempotent calls such as create,
rename and delete in HRegionFileSystem class.

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