[ http://issues.apache.org/jira/browse/HADOOP-232?page=comments#action_12412585 ]
Yoram Arnon commented on HADOOP-232: ------------------------------------ debugging the hadoop distcp command required it. the command is executed by the dfs client, which is in this case a map task. the class is part of the hadoop release however, so it already resided on the tasktracker's nodes. We wanted to actually override it using a newly sent jar, without upgrading and restarting the map-reduce cluster. we saw that as a general enough case to warrant a change to the task tracker. I guess that an alternate solution would be to unbundle the 'external' programs from the main jar file. > jar files sent to task tracker should override existing jar > ----------------------------------------------------------- > > Key: HADOOP-232 > URL: http://issues.apache.org/jira/browse/HADOOP-232 > Project: Hadoop > Type: Bug > Components: mapred > Reporter: Yoram Arnon > Assignee: Milind Bhandarkar > Priority: Minor > Attachments: hadoop-232.patch > > jar files sent to task tracker are appended to list, rather than prepended to > it. > this results in the original jar getting executed, although a new one was > sent - not the intent. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
