hadoop-hdfs-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4942) Add retry cache support in Namenode
Date Fri, 28 Jun 2013 21:21:20 GMT
Suresh Srinivas created HDFS-4942:

             Summary: Add retry cache support in Namenode
                 Key: HDFS-4942
                 URL: https://issues.apache.org/jira/browse/HDFS-4942
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: ha, namenode
            Reporter: Suresh Srinivas
            Assignee: Suresh Srinivas

In current HA mechanism with FailoverProxyProvider and non HA setups with RetryProxy retry
a request from the RPC layer. If the retried request has already been processed at the namenode,
the subsequent attempts fail for idempotent operations such as  create, append, delete, rename
etc. This will cause application failures during HA failover, network issues etc.

This jira proposes adding retry cache at the namenode to handle these failures. More details
in the comments.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

View raw message