Works now!
I understand the "ONLY for use in standalone mode" status but I would
suggest instead bundling the jar's of the HDFS that HBase is compatible
with. E.g. the current pairing: hbase-0.90.4 with hadoop-0.20.205.0
Thank you!
Alex
On 12/21/2011 03:00 PM, Jean-Daniel Cryans wrote:
Copy over the commons-configuration jar too.
J-D
On Wed, Dec 21, 2011 at 2:57 PM, Aleksandr Levchuk<[email protected]> wrote:
As you suggested, I replaced hadoop-core-0.20-append-r1056497.jar with
hadoop-core-0.20.205.0.jar (in hbase's lib) on the machines of the cluster,
but now when start-hbase.sh on the master gives:
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/commons/configuration/Configuration
at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.<init>
...
at
org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:395)
at
org.apache.hadoop.fs.FileSystem$Cache$Key.<init>(FileSystem.java:1436)
Alex
On 12/21/2011 02:21 PM, Jean-Daniel Cryans wrote:
I added dfs.support.append=true configuration everywhere but I get the
same
"got version 3 expected version 4" problem.
Setting this won't solve your version problem.
How do I update the jars in the hbase lib directory?
Remove the hadoop jar that's in there, replace it with the 0.20.205 one.
This makes it look like hadoop-0.20.205.0 and hbase-0.90.4 are
incompatible.
This error really means that you didn't replace the jars correctly,
the version is contained in the Hadoop jar and HBase isn't involved at
all. From http://hbase.apache.org/book/hadoop.html
"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."
J-D
