hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2721) Race condition: ZKRMStateStore retry logic may throw NodeExist exception
Date Tue, 21 Oct 2014 20:43:33 GMT
Jian He created YARN-2721:
-----------------------------

             Summary: Race condition: ZKRMStateStore retry logic may throw NodeExist exception

                 Key: YARN-2721
                 URL: https://issues.apache.org/jira/browse/YARN-2721
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Jian He
            Assignee: Jian He
             Fix For: 2.6.0


Blindly retrying operations in zookeeper will not work for non-idempotent operations (like
create znode). The reason is that the client can do a create znode, but the response may not
be returned because the server can die or timeout. In case of retrying the create znode, it
will throw a NODE_EXISTS exception from the earlier create from the same session.  



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message