Thanks I can compile it now.
But I still have a problem.
*The hadoop 0.19.1 cluster is running on four nodes: *
-X.X.X.92=data node
-X.X.X.85=jobtracker
-X.X.X.72=slave
-X.X.X.58=slave
*I configured the hbase 0.19.3 running on this cluster: *
-X.X.X.72: The hbase master having its hbase.rootdir pointing on the X.92
-X.X.X.58: a regionserver.
>From the hbase shell on X.X.X.72 I could created and modify tables.
*Problem*:
Now I compiled the MyClient.Java program from the node X.X.X.72 it worked
thanks to your help. I tried to run it with the command "bin/hbase MyClient"
it gave me the following error
*2009-07-28 11:53:42,226 INFO
org.apache.hadoop.hbase.client.HConnectionManager$TableServers: getMaster
attempt 0 of 10 failed; retrying after sleep of 2000
java.net.ConnectException: Call to
pc72.test.mobnets.rwth-aachen.de/134.130.223.72:9001 failed on connection
exception: java.net.ConnectException: Connection refused
at
org.apache.hadoop.hbase.ipc.HBaseClient.wrapException(HBaseClient.java:728)
at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:704)
at
org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:321)
at $Proxy0.getProtocolVersion(Unknown Source)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:467)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:443)
at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:491)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getMaster(HConnectionManager.java:207)
at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:70)
at org.apache.hadoop.hbase.master.HMaster.doMain(HMaster.java:1033)
at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1057)
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)
at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:100)
at
org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupIOstreams(HBaseClient.java:304)
at
org.apache.hadoop.hbase.ipc.HBaseClient$Connection.access$1700(HBaseClient.java:181)
at
org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:805)
at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:690)
... 9 more
2009-07-28 11:53:45,232 INFO org.apache.hadoop.ipc.HBaseClass: Retrying
connect to server: pc72.test.mobnets.rwth-aachen.de/134.130.223.72:9001.
Already tried 0 time(s).
2009-07-28 11:53:46,236 INFO org.apache.hadoop.ipc.HBaseClass: Retrying
connect to server: pc72.test.mobnets.rwth-aachen.de/134.130.223.72:9001.
Already tried 1 time(s).
2009-07-28 11:53:47,240 INFO org.apache.hadoop.ipc.HBaseClass: Retrying
connect to server: pc72.test.mobnets.rwth-aachen.de/13
**Questions:**
*-I doubt that my configuration for hbase is correct. Can the hbase master
run on any of the four nodes even on the datanode or Jobtracker nodes? or
should it be specifically one of the slaves as I did?
-In case the hbase master is one of the nodes. The file "regionservers"
shall contains all the rest of nodes? or shall I exclude the Jobtracker and
datanode addresses?
-Finally any idea if my error is generated from my hbase configuration? or
from something else?
Thank you for answering my questions.
CJ
*
*
On Mon, Jul 27, 2009 at 8:02 PM, tim robertson <[email protected]>wrote:
> Add the hadoop.jar to the classpath when you are compiling and you should
> be ok.
>
> javac -classpath ${HBASE_HOME}/hbase-${HBASE_VERSION}.jar:
> ${HADOOP_HOME}/hadoop-${HADOOP_VERSION}.jar -d test_classes...
>
> The config you changed provides the paths at runtime, but not at compile
> time.
>
> Cheers
>
> Tim
>
> On Mon, Jul 27, 2009 at 7:59 PM, Xine Jar<[email protected]> wrote:
> > Hallo I am running the hadoop version 0.19.1 on a cluster of 4 nodes. The
> > hadoop is working fine.
> > I have installed as well the hbase version 0.19.3 following the guideline
> in
> > http://hadoop.apache.org/hbase/docs/r0.19.3/api/overview-summary.html. I
> > managed to configure the hbase on the cluster and I could even create
> tables
> > using the hbase shell.
> >
> > *I know that my problem resides in a path but I don't know how to correct
> it
> > :**
> > *I have copied the Java program MyClient.java from above mentioned link
> and
> > tried to compile it from the hbase Master:
> >
> > pc72:~/Desktop/hbase-0.19.3 #
> > javac -classpath ${HBASE_HOME}/hbase-${HBASE_VERSION}.jar -d test_classes
> > MyClient.java
> >
> > *I got the following errors:*
> > MyClient.java:9: package org.apache.hadoop.conf does not exist
> > import org.apache.hadoop.conf.Configuration;
> > ^
> > MyClient.java:45: cannot access org.apache.hadoop.io.WritableComparable
> > class file for org.apache.hadoop.io.WritableComparable not found
> > table.commit(batchUpdate);
> > ^
> > 2 errors
> >
> > *What I did not forget to do*:
> > I Fulfilled the two required steps:
> >
> > - Add a pointer to your HADOOP_CONF_DIR to CLASSPATH in hbase-env.sh
> >
> > My hbase-env.sh looks like this:
> >
> > export JAVA_HOME="/usr/lib64/jvm/java"
> > export HBASE_HOME="/root/Desktop/hbase-0.19.3"
> > export HBASE_VERSION="0.19.3"
> > export HBASE_CLASSPATH="/root/Desktop/hadoop-0.19.1/conf"
> >
> >
> >
> > - Add a copy of hadoop-site.xml to ${HBASE_HOME}/conf,
> >
> > I have copied the file
> >
> > *Am I compiling wrong?Can anyone tell me if I forgot a path somewhere?
> **
> > **
> > I appreciate any help.
> >
> >
> > thank you*
> >
>
