[
https://issues.apache.org/jira/browse/HDFS-4712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13636160#comment-13636160
]
andrea manzi commented on HDFS-4712:
------------------------------------
Hi Colin,
thanks for the reply. What we have mapped in JNI is creation of the DFSClient
and the call to the method datanodeReport of that class. We have a struct
mapping the DataNodeInfo and a method to free the the memory.
The problem with this approach is that the user running the client should be a
cluster superuser.
I didn't think about the NameNodeRpcServer#getDatanodeReport that you are
referring to. Do you think it would be feasible to expose that method instead
and it will not require then superuser provilegies?
thanks
Andrea
> New libhdfs method hdfsGetDataNodes
> -----------------------------------
>
> Key: HDFS-4712
> URL: https://issues.apache.org/jira/browse/HDFS-4712
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: libhdfs
> Reporter: andrea manzi
>
> we have implemented a possible extension to libhdfs to retrieve information
> about the available datanodes ( there was a mail on the hadoop-hdsf-dev
> mailing list initially abut this :
> http://mail-archives.apache.org/mod_mbox/hadoop-hdfs-dev/201204.mbox/%3CCANhO-
> s0mvororrxpjnjbql6brkj4c7l+u816xkdc+2r0whj...@mail.gmail.com%3E)
> i would like to know how to proceed to create a patch, cause on the wiki
> http://wiki.apache.org/hadoop/HowToContribute i can see info about JAVA
> patches but nothing related to extensions in C.
--
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
