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Posted to issues@hbase.apache.org by "Himanshu Vashishtha (JIRA)" <ji...@apache.org> on 2013/03/20 18:29:15 UTC

[jira] [Created] (HBASE-8156) Support for Namenode HA for non-idempotent operations

Himanshu Vashishtha created HBASE-8156:
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             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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