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From David Ritch <david.ri...@gmail.com>
Subject Downgrading Hdfs
Date Wed, 18 Mar 2009 17:08:17 GMT
There is an established procedure for upgrading from one release of Hadoop
to a newer release.  Is there something similar to move back to an
lower-numered release?

Specifically, we have data in a cloud running Hadoop-19.0.  Because of
stability issues, we are wondering whether we should move back to 18, but we
don't want to lose our data.  Is there a downward migration path?



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