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Posted to issues@hbase.apache.org by "Himanshu Vashishtha (JIRA)" <ji...@apache.org> on 2013/03/20 18:31:16 UTC
[jira] [Updated] (HBASE-8156) Support for Namenode HA for
non-idempotent operations
[ https://issues.apache.org/jira/browse/HBASE-8156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Himanshu Vashishtha updated HBASE-8156:
---------------------------------------
Attachment: HBase-8156-trunk-v1.patch
HregionFileSystem class now uses FSUtils calls for all of its non-idempotent operations.
Passed jenkins.
> 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
>
> Attachments: HBase-8156-trunk-v1.patch
>
>
> 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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