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From Andrew Purtell <apurt...@apache.org>
Subject Re: Failed to start HBase 0.98-hadoop2: Waiting for region servers count to settle
Date Wed, 26 Feb 2014 18:53:51 GMT
On Wed, Feb 26, 2014 at 10:18 AM, S. Zhou <myxjtu@yahoo.com> wrote:

> hadoop 2.3.0 uses hadoop-common-2.3.0
> hbase 0.98 uses hadoop-common-2.2.0


The first thing you must do is match up the Hadoop jars in your HBase
installation with the version of Hadoop you are using, if it is different
than what we package. See https://hbase.apache.org/book.html#hadoop

Replace the Hadoop Bundled With HBase!
Because HBase depends on Hadoop, it bundles an instance of the Hadoop jar
under its lib directory. The bundled jar is ONLY for use in standalone
mode. In distributed mode, it is *critical* that the version of Hadoop that
is out on your cluster match what is under HBase. Replace the hadoop jar
found in the HBase lib directory with the hadoop jar you are running on
your cluster to avoid version mismatch issues. Make sure you replace the
jar in HBase everywhere on your cluster. Hadoop version mismatch issues
have various manifestations but often all looks like its hung up.

Best regards,

   - Andy

Problems worthy of attack prove their worth by hitting back. - Piet Hein
(via Tom White)

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