[
https://issues.apache.org/jira/browse/HDFS-4849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13687105#comment-13687105
]
Suresh Srinivas commented on HDFS-4849:
---------------------------------------
bq. No. Could you please try to run it.
I ran the tests. The create call has overwrite flag turned on. So the last
create succeeds, with the previous ones failing.
If you change the create call to:
{code}
final FSDataOutputStream out = fs.create(path, false, 1024,
(short)1, 1024);
{code}
It works as I explained earlier, except the exception thrown is
AlreadyBeingCreatedException.
> Idempotent create and append operations.
> ----------------------------------------
>
> Key: HDFS-4849
> URL: https://issues.apache.org/jira/browse/HDFS-4849
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.0.4-alpha
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Priority: Blocker
> Attachments: idempotentCreate.patch, idempotentCreate.patch,
> idempotentCreate.patch
>
>
> create, append and delete operations can be made idempotent. This will reduce
> chances for a job or other app failures when NN fails over.
--
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
