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HDFS >> mail # user >> Migration needed when updating within an Hadoop release


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Re: Migration needed when updating within an Hadoop release
Hi Björn,

> - But what about minor updates, e. g. from 1.0.1 to 1.0.4? Has this ever happened for such updates?

You will probably see log messages like 'RPC version mismatch', in this case you have to upgrade the filesystem. If not - all well :)

> - What about HBase minor releases in this context? Have data model changes/ conversions/ migrations ever happened between minor releases?

Yes, but not regularly. Please see my next answer.

> - Is there a similar wiki page describing HBase upgrade?
http://hbase.apache.org/upgrading.html
Cheers,
 Alex
--
Alexander Alten-Lorenz
http://mapredit.blogspot.com
German Hadoop LinkedIn Group: http://goo.gl/N8pCF
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB