Hi Alexandra, Yes, a HBase release 0.19 is compatible with Hadoop 0.19 with no other guarantees, and a HBase 0.20 release is compatible with Hadoop 0.20, and so on.
It is hard to say without actually trying a recompile and deployment if HBase 0.19.2 would have any trouble on Hadoop trunk. I would not recommend running Hadoop trunk in production. But, if you are going to do something like that, then I'd be happy to help you get over any initial hurdle regarding compile problems or similar. Let me know. Best regards, - Andy ________________________________ From: Alexandra Alecu <[email protected]> To: [email protected] Sent: Thursday, May 14, 2009 5:16:16 AM Subject: Re: Hbase 0.19.2 - Large import results in heavily unbalanced hadoop DFS Hi, Many thanks to all for your answers. Your help is much appreciated. Andy, you were right, fs.trash.interval didn't help.However, on a second run I was lucky enough that the overload got distributed over 2 of my 4 datanodes and it didn't result into an error during the import. I was looking at this patch and I see it is suitable for Hadoop 0.21.0. I am worried that if I install 0.21.0 it won't be compatible with the HBase version, 0.19.2 ( I am trying to stick to the stable versions until I learn my way around). Did some digging regarding the Hadoop / HBase versioning. Is it still the case that they are kept in line as specified in http://wiki.apache.org/hadoop/Hbase/FAQ#19. Best regards, Alexandra. -- View this message in context: http://www.nabble.com/Hbase-0.19.2---Large-import-results-in-heavily-unbalanced-hadoop-DFS-tp23526652p23539385.html Sent from the HBase User mailing list archive at Nabble.com.
