Hbase 0.20.6 Can not start master exception

Question

I'm using Hbase 0.20.6 with Hadoop 0.21.0 on Ubuntu 10.04 LTS and I got can't start master error. (The error is attached at the end of the post from the hbase-root-master-ubuntu.log file)

Does Hbase 0.20.6 work fine with Hadoop 0.21.0 ?? and if it's NOT, Is there a work around ??

What's the problem source ??

Thanks for your time and consideration.

The Log :

java.io.IOException: Call to localhost/127.0.0.1:54310 failed on local exception: java.io.EOFException
 at org.apache.hadoop.ipc.Client.wrapException(Client.java:775)
 at org.apache.hadoop.ipc.Client.call(Client.java:743)
 at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
 at $Proxy0.getProtocolVersion(Unknown Source)
 at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359)
 at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:106)
 at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:207)
 at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:170)
 at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:82)
 at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1378)
 at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
 at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1390)
 at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:196)
 at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95)
 at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:195)
 at org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:94)
 at org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:78)
 at org.apache.hadoop.hbase.master.HMaster.doMain(HMaster.java:1229)
 at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1274)
Caused by: java.io.EOFException
 at java.io.DataInputStream.readInt(DataInputStream.java:375)
 at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:501)
 at org.apache.hadoop.ipc.Client$Connection.run(Client.java:446)
Fri Dec 24 14:02:12 EET 2010 Starting master on ubuntu
ulimit -n 1024
2010-12-24 14:02:13,267 INFO org.apache.hadoop.hbase.master.HMaster: vmName=Java HotSpot(TM) Client VM, vmVendor=Sun Microsystems Inc., vmVersion=17.1-b03
2010-12-24 14:02:13,268 INFO org.apache.hadoop.hbase.master.HMaster: vmInputArguments=[-Xmx1000m, -XX:+HeapDumpOnOutOfMemoryError, -XX:+UseConcMarkSweepGC, -XX:+CMSIncrementalMode, -XX:+HeapDumpOnOutOfMemoryError, -XX:+UseConcMarkSweepGC, -XX:+CMSIncrementalMode, -XX:+HeapDumpOnOutOfMemoryError, -XX:+UseConcMarkSweepGC, -XX:+CMSIncrementalMode, -Dhbase.log.dir=/usr/lib/hbase/bin/../logs, -Dhbase.log.file=hbase-root-master-ubuntu.log, -Dhbase.home.dir=/usr/lib/hbase/bin/.., -Dhbase.id.str=root, -Dhbase.root.logger=INFO,DRFA, -Djava.library.path=/usr/lib/hbase/bin/../lib/native/Linux-i386-32]
2010-12-24 14:02:13,353 INFO org.apache.hadoop.hbase.master.HMaster: My address is ubuntu.ubuntu-domain:60000
2010-12-24 14:02:13,593 ERROR org.apache.hadoop.hbase.master.HMaster: Can not start master

Answer 1

There has been a discussion about this on HBase users mailing list recently, I would suggest reading it. http://mail-archives.apache.org/mod_mbox/hbase-user/201012.mbox/%3CAANLkTimA7UQZAiG0810mtHtGk30x8ejGs+n5+CF8GxQ1@mail.gmail.com%3E

As a summary I would quote what Ryan Rawson of StumbleUpon mentioned in the lists:

HBase 0.20.6 is likely to run well on hadoop 21. We have many patches that help bolster durability on top of branch-20-append, and also some may apply to hadoop 21.

What you are possibly running in to is using hadoop 20 jars in hbase 0.90 on top of hadoop 21. Try deleting the hadoop 20 jars and copying in your hadoop 21.

Also consider running cdh3b2+, hadoop 21 is a panned release and no one runs it nor expects it to be run in a production setting.

We are using the HBase 0.90 RCs with Cloudera's CDH3b3 via debian packages. In case you want to consider it please refer to its installation page for details. I would also recommend this page for installation on a cluster. Download the latest HBase 0.90 RC from here.