Today, Tim put a smile on the faces of many Dumbo users at Last.fm by backporting HADOOP-5528 to Hadoop 0.18. Now that his backported patch has been deployed, we finally get to use join keys on our production clusters, allowing us to join more easily and avoid the memory-hungry alternative ways of joining datasets.
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[...] over HBase This should be old news for dumbo-user subscribers, but Tim has, once again, put his Java coding skills to good use. This time around he created nifty input and output formats [...]