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Colin Patrick McCabe commented on HDFS-4712: -------------------------------------------- Hi Andrea, I think {{datanodeReport}} is the method you want, much better than my earlier suggestion. If I am interpreting correctly, you say you are creating your own {{DFSClient}}. It shouldn't be necessary for you to do that, since there should already be one of those that you can get from the existing {{FileSystem}}. I don't think that the requirement for superuser privileges is a problem. Just set {{errno}} to {{EPERM}} if the user doesn't have the correct permissions. The requirement to be superuser here is deliberate, and we don't want to open a security hole. Please do attach the code; that's the first step towards getting it included in HDFS. You can also click "submit patch" to get JIRA results on it. > 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