Need to sort on more than the primary key -----------------------------------------
Key: HADOOP-531 URL: http://issues.apache.org/jira/browse/HADOOP-531 Project: Hadoop Issue Type: Improvement Components: contrib/streaming Affects Versions: 0.5.0 Reporter: Richard Kasperski There are many tasks where I need to have finer control over the ordering in the reduce than a sort on a single key provides. Most of these situations arise when a merge two sources of data and am attaching a single instance of one source to multiple instances of a second source. I know that I can read all the the records with a single key. It's possible that there might be many millions of these making memory demands that cannot be satisfied. -- 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