Re: Hbase with Hadoop
Jignesh, I have been able to deploy Hbase 0.90.3 and 0.90.4 with hadoop-0.20.205. Below are the steps I followed: 1. Make sure none of hbasemaster, regionservers or zookeeper are running. As Matt pointed out, turn on append. 2. hbase-daemon.sh --config $HBASE_CONF_DIR start zookeeper 3. hbase-daemon.sh --config $HBASE_CONF_DIR start master 4. hbase-daemon.sh --config $HBASE_CONF_DIR start regionserver 5. hbase --config $HBASE_CONF_DIR shell Hope it helps. Ramya On Thu, Oct 13, 2011 at 4:11 PM, Jignesh Patel jign...@websoft.com wrote: Is there a way to resolve this weird problem. bin/hbase-start.sh is supposed to start zookeeper but it doesn't start. But on the other side if zookeeper up and running then it says Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum On Oct 13, 2011, at 5:40 PM, Jignesh Patel wrote: Ok now the problem is if I only use bin/hbase-start.sh then it doesn't start zookeeper. But if I use bin/hbase-daemon.sh start zookeeper before starting bin/hbase-start.sh then it will try to start zookeeper at port 2181 and then I have following error. Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum So I am wondering if bin/hbase-start.sh is trying to start zookeeper then while zookeeper is not running it should start the zookeeper. I only get the error if zookeeper already running. -Jignesh On Oct 13, 2011, at 4:53 PM, Ramya Sunil wrote: You already have zookeeper running on 2181 according to your jps output. That is the reason, master seems to be complaining. Can you please stop zookeeper, verify that no daemons are running on 2181 and restart your master? On Thu, Oct 13, 2011 at 12:37 PM, Jignesh Patel jign...@websoft.com wrote: Ramya, Based on Hbase the definite guide it seems zookeeper being started by hbase no need to start it separately(may be this is changed for 0.90.4. Anyways now following is the updated status. Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/start-hbase.sh starting master, logging to /users/hadoop-user/hadoop-hbase/logs/hbase-hadoop-user-master-Jignesh-MacBookPro.local.out Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum Jignesh-MacBookPro:hadoop-hbase hadoop-user$ jps 41486 HQuorumPeer 38814 SecondaryNameNode 41578 Jps 38878 JobTracker 38726 DataNode 38639 NameNode 38964 TaskTracker On Oct 13, 2011, at 3:23 PM, Ramya Sunil wrote: Jignesh, I dont see zookeeper running on your master. My cluster reads the following: $ jps 15315 Jps 13590 HMaster 15235 HQuorumPeer Can you please shutdown your Hmaster and run the following first: $ hbase-daemon.sh start zookeeper And then start your hbasemaster and regionservers? Thanks Ramya On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel jign...@websoft.com wrote: ok --config worked but it is showing me same error. How to resolve this. http://pastebin.com/UyRBA7vX On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote: Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s) in 0.5140 seconds hbase(main):002:0 list 'newtable' TABLE newtable 1 row(s) in 0.0120 seconds OR $ export HBASE_CONF_DIR=/home/ramya/hbase/conf $ hbase shell hbase(main):001:0 list 'newtable' TABLE newtable 1 row(s) in 0.3860 seconds Thanks Ramya On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.com wrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Ramya, I have followed the steps you mention but in this steps I don't see you starting hbase. I have followed step 1,2 and 3. Here is how my hdfs-site.xml looks. configuration property namedfs.replication/name value1/value descriptionDefault block replication. The actual number of replications can be specified when the file is created. The default is used if replication is not specified in create time. /description /property property namedfs.support.append/name valuetrue/value /property property namedfs.datanode.max.xcievers/name value4096/value /property /configuration For the step 4 I got following message which is ok as I am running in pseudo mode. starting regionserver, logging to /Users/hadoop-user/hadoop-hbase/bin/../logs/hbase-hadoop-user-regionserver-Jignesh-MacBookPro.local.out 11/10/14 10:25:55 WARN regionserver.HRegionServerCommandLine: Not starting a distinct region server because hbase.cluster.distributed is false then when I have tried to start base - bin/start-hbase.sh --config ./config I have same old error. Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum -Jignesh On Oct 14, 2011, at 2:31 AM, Ramya Sunil wrote: Jignesh, I have been able to deploy Hbase 0.90.3 and 0.90.4 with hadoop-0.20.205. Below are the steps I followed: 1. Make sure none of hbasemaster, regionservers or zookeeper are running. As Matt pointed out, turn on append. 2. hbase-daemon.sh --config $HBASE_CONF_DIR start zookeeper 3. hbase-daemon.sh --config $HBASE_CONF_DIR start master 4. hbase-daemon.sh --config $HBASE_CONF_DIR start regionserver 5. hbase --config $HBASE_CONF_DIR shell Hope it helps. Ramya On Thu, Oct 13, 2011 at 4:11 PM, Jignesh Patel jign...@websoft.com wrote: Is there a way to resolve this weird problem. bin/hbase-start.sh is supposed to start zookeeper but it doesn't start. But on the other side if zookeeper up and running then it says Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum On Oct 13, 2011, at 5:40 PM, Jignesh Patel wrote: Ok now the problem is if I only use bin/hbase-start.sh then it doesn't start zookeeper. But if I use bin/hbase-daemon.sh start zookeeper before starting bin/hbase-start.sh then it will try to start zookeeper at port 2181 and then I have following error. Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum So I am wondering if bin/hbase-start.sh is trying to start zookeeper then while zookeeper is not running it should start the zookeeper. I only get the error if zookeeper already running. -Jignesh On Oct 13, 2011, at 4:53 PM, Ramya Sunil wrote: You already have zookeeper running on 2181 according to your jps output. That is the reason, master seems to be complaining. Can you please stop zookeeper, verify that no daemons are running on 2181 and restart your master? On Thu, Oct 13, 2011 at 12:37 PM, Jignesh Patel jign...@websoft.com wrote: Ramya, Based on Hbase the definite guide it seems zookeeper being started by hbase no need to start it separately(may be this is changed for 0.90.4. Anyways now following is the updated status. Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/start-hbase.sh starting master, logging to /users/hadoop-user/hadoop-hbase/logs/hbase-hadoop-user-master-Jignesh-MacBookPro.local.out Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum Jignesh-MacBookPro:hadoop-hbase hadoop-user$ jps 41486 HQuorumPeer 38814 SecondaryNameNode 41578 Jps 38878 JobTracker 38726 DataNode 38639 NameNode 38964 TaskTracker On Oct 13, 2011, at 3:23 PM, Ramya Sunil wrote: Jignesh, I dont see zookeeper running on your master. My cluster reads the following: $ jps 15315 Jps 13590 HMaster 15235 HQuorumPeer Can you please shutdown your Hmaster and run the following first: $ hbase-daemon.sh start zookeeper And then start your hbasemaster and regionservers? Thanks Ramya On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel jign...@websoft.com wrote: ok --config worked but it is showing me same error. How to resolve this. http://pastebin.com/UyRBA7vX On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote: Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s
Re: Hbase with Hadoop
On Oct 14, 2011, at 2:44 PM, Jignesh Patel wrote:
According to start-hase.sh if distributed mode=flase then I am supposed to
start only masters it doesn't required to start zookeeper, see the script
below from the file.
if [ $distMode == 'false' ]
then
$bin/hbase-daemon.sh start master
else
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} start zookeeper
$bin/hbase-daemon.sh --config ${HBASE_CONF_DIR} start master
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} \
--hosts ${HBASE_REGIONSERVERS} start regionserver
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} \
--hosts ${HBASE_BACKUP_MASTERS} start master-backup
fi
According to above script the zookeeper is not required to start as I am not
running server in distributed mode but in pseudo mode. But then it is giving
error for zookeeper is not able to connect.
-Jignesh
is supposed to start zookeeper and master as per the
On Fri, Oct 14, 2011 at 2:31 AM, Ramya Sunil [via Lucene]
ml-node+s472066n342086...@n3.nabble.com wrote:
Jignesh,
I have been able to deploy Hbase 0.90.3 and 0.90.4 with hadoop-0.20.205.
Below are the steps I followed:
1. Make sure none of hbasemaster, regionservers or zookeeper are running. As
Matt pointed out, turn on append.
2. hbase-daemon.sh --config $HBASE_CONF_DIR start zookeeper
3. hbase-daemon.sh --config $HBASE_CONF_DIR start master
4. hbase-daemon.sh --config $HBASE_CONF_DIR start regionserver
5. hbase --config $HBASE_CONF_DIR shell
Hope it helps.
Ramya
On Thu, Oct 13, 2011 at 4:11 PM, Jignesh Patel [hidden email] wrote:
Is there a way to resolve this weird problem.
bin/hbase-start.sh is supposed to start zookeeper but it doesn't start.
But on the other side if zookeeper up and running then it says
Couldnt start ZK at requested address of 2181, instead got: 2182.
Aborting. Why? Because clients (eg shell) wont be able to find this ZK
quorum
On Oct 13, 2011, at 5:40 PM, Jignesh Patel wrote:
Ok now the problem is
if I only use bin/hbase-start.sh then it doesn't start zookeeper.
But if I use bin/hbase-daemon.sh start zookeeper before starting
bin/hbase-start.sh then it will try to start zookeeper at port 2181 and
then
I have following error.
Couldnt start ZK at requested address of 2181, instead got: 2182.
Aborting. Why? Because clients (eg shell) wont be able to find this ZK
quorum
So I am wondering if bin/hbase-start.sh is trying to start zookeeper then
while zookeeper is not running it should start the zookeeper. I only get
the
error if zookeeper already running.
-Jignesh
On Oct 13, 2011, at 4:53 PM, Ramya Sunil wrote:
You already have zookeeper running on 2181 according to your jps output.
That is the reason, master seems to be complaining.
Can you please stop zookeeper, verify that no daemons are running on
2181
and restart your master?
On Thu, Oct 13, 2011 at 12:37 PM, Jignesh Patel [hidden email]
wrote:
Ramya,
Based on Hbase the definite guide it seems zookeeper being started by
hbase no need to start it separately(may be this is changed for 0.90.4.
Anyways now following is the updated status.
Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/start-hbase.sh
starting master, logging to
/users/hadoop-user/hadoop-hbase/logs/hbase-hadoop-user-master-Jignesh-MacBookPro.local.out
Couldnt start ZK at requested address of 2181, instead got: 2182.
Aborting.
Why? Because clients (eg shell) wont be able to find this ZK quorum
Jignesh-MacBookPro:hadoop-hbase hadoop-user$ jps
41486 HQuorumPeer
38814 SecondaryNameNode
41578 Jps
38878 JobTracker
38726 DataNode
38639 NameNode
38964 TaskTracker
On Oct 13, 2011, at 3:23 PM, Ramya Sunil wrote:
Jignesh,
I dont see zookeeper running on your master. My cluster reads the
following:
$ jps
15315 Jps
13590 HMaster
15235 HQuorumPeer
Can you please shutdown your Hmaster and run the following first:
$ hbase-daemon.sh start zookeeper
And then start your hbasemaster and regionservers?
Thanks
Ramya
On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel [hidden email]
wrote:
ok --config worked but it is showing me same error. How to resolve
this.
http://pastebin.com/UyRBA7vX
On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote:
Hi Jignesh,
--config (i.e. - - config) is the option to use and not -config.
Alternatively you can also set HBASE_CONF_DIR.
Below is the exact command line:
$ hbase --config /home/ramya/hbase/conf shell
hbase(main):001:0 create 'newtable','family'
0 row(s) in 0.5140 seconds
hbase(main):002:0 list 'newtable'
TABLE
newtable
1 row(s) in 0.0120 seconds
Re: Hbase with Hadoop
Can somebody help me to work Hadoop 0.20.205.0 and Hbase 0.90.4 in pseudo mode.
This is third day in a row and I am not able to make it run.
The details are as follows
http://pastebin.com/KrJePt64
If this is not going to work then let me know which version I should use to get
it run.
On Oct 14, 2011, at 2:46 PM, Jignesh Patel wrote:
On Oct 14, 2011, at 2:44 PM, Jignesh Patel wrote:
According to start-hase.sh if distributed mode=flase then I am supposed to
start only masters it doesn't required to start zookeeper, see the script
below from the file.
if [ $distMode == 'false' ]
then
$bin/hbase-daemon.sh start master
else
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} start zookeeper
$bin/hbase-daemon.sh --config ${HBASE_CONF_DIR} start master
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} \
--hosts ${HBASE_REGIONSERVERS} start regionserver
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} \
--hosts ${HBASE_BACKUP_MASTERS} start master-backup
fi
According to above script the zookeeper is not required to start as I am not
running server in distributed mode but in pseudo mode. But then it is giving
error for zookeeper is not able to connect.
-Jignesh
is supposed to start zookeeper and master as per the
On Fri, Oct 14, 2011 at 2:31 AM, Ramya Sunil [via Lucene]
ml-node+s472066n342086...@n3.nabble.com wrote:
Jignesh,
I have been able to deploy Hbase 0.90.3 and 0.90.4 with hadoop-0.20.205.
Below are the steps I followed:
1. Make sure none of hbasemaster, regionservers or zookeeper are running. As
Matt pointed out, turn on append.
2. hbase-daemon.sh --config $HBASE_CONF_DIR start zookeeper
3. hbase-daemon.sh --config $HBASE_CONF_DIR start master
4. hbase-daemon.sh --config $HBASE_CONF_DIR start regionserver
5. hbase --config $HBASE_CONF_DIR shell
Hope it helps.
Ramya
On Thu, Oct 13, 2011 at 4:11 PM, Jignesh Patel [hidden email] wrote:
Is there a way to resolve this weird problem.
bin/hbase-start.sh is supposed to start zookeeper but it doesn't start.
But on the other side if zookeeper up and running then it says
Couldnt start ZK at requested address of 2181, instead got: 2182.
Aborting. Why? Because clients (eg shell) wont be able to find this ZK
quorum
On Oct 13, 2011, at 5:40 PM, Jignesh Patel wrote:
Ok now the problem is
if I only use bin/hbase-start.sh then it doesn't start zookeeper.
But if I use bin/hbase-daemon.sh start zookeeper before starting
bin/hbase-start.sh then it will try to start zookeeper at port 2181 and
then
I have following error.
Couldnt start ZK at requested address of 2181, instead got: 2182.
Aborting. Why? Because clients (eg shell) wont be able to find this ZK
quorum
So I am wondering if bin/hbase-start.sh is trying to start zookeeper
then
while zookeeper is not running it should start the zookeeper. I only get
the
error if zookeeper already running.
-Jignesh
On Oct 13, 2011, at 4:53 PM, Ramya Sunil wrote:
You already have zookeeper running on 2181 according to your jps
output.
That is the reason, master seems to be complaining.
Can you please stop zookeeper, verify that no daemons are running on
2181
and restart your master?
On Thu, Oct 13, 2011 at 12:37 PM, Jignesh Patel [hidden email]
wrote:
Ramya,
Based on Hbase the definite guide it seems zookeeper being started
by
hbase no need to start it separately(may be this is changed for
0.90.4.
Anyways now following is the updated status.
Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/start-hbase.sh
starting master, logging to
/users/hadoop-user/hadoop-hbase/logs/hbase-hadoop-user-master-Jignesh-MacBookPro.local.out
Couldnt start ZK at requested address of 2181, instead got: 2182.
Aborting.
Why? Because clients (eg shell) wont be able to find this ZK quorum
Jignesh-MacBookPro:hadoop-hbase hadoop-user$ jps
41486 HQuorumPeer
38814 SecondaryNameNode
41578 Jps
38878 JobTracker
38726 DataNode
38639 NameNode
38964 TaskTracker
On Oct 13, 2011, at 3:23 PM, Ramya Sunil wrote:
Jignesh,
I dont see zookeeper running on your master. My cluster reads the
following:
$ jps
15315 Jps
13590 HMaster
15235 HQuorumPeer
Can you please shutdown your Hmaster and run the following first:
$ hbase-daemon.sh start zookeeper
And then start your hbasemaster and regionservers?
Thanks
Ramya
On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel [hidden email]
wrote:
ok --config worked but it is showing me same error. How to resolve
this.
http://pastebin.com/UyRBA7vX
On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote:
Hi Jignesh,
--config (i.e. - - config) is the option
Re: Hbase with Hadoop
On Wed, Oct 12, 2011 at 9:31 AM, Vinod Gupta Tankala tvi...@readypulse.com wrote: its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. You've got it a bit backwards - except for very rare exceptions, we check our fixes into the public ASF codebase before we commit anything to CDH releases. Sometimes, it will show up in a CDH release before an ASF release, but the changes are always done as backports from ASF'[s subversion. You can see the list of public JIRAs referenced in our changelists here: http://archive.cloudera.com/cdh/3/hadoop-0.20.2+923.97.CHANGES.txt Apologies for the vendor-specific comment: I just wanted to clarify that Cloudera's aim is to contribute to the community and not any kind of fork as suggested above. Back to work on 0.23 for me! -Todd -- Todd Lipcon Software Engineer, Cloudera
Re: Hbase with Hadoop
At last I move one step further. It was a problem with the hadoop jar file. I
need to replace hadoop-core-xx.jar in base/lib with hadoop/lib.
After replacing it I got following error:
2011-10-14 17:09:12,409 FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled
exception. Starting shutdown.
java.lang.NoClassDefFoundError: org/apache/commons/configuration/Configuration
at
org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.init(DefaultMetricsSystem.java:37)
at
org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.clinit(DefaultMetricsSystem.java:34)
at
org.apache.hadoop.security.UgiInstrumentation.create(UgiInstrumentation.java:51)
at
org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:196)
at
org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:159)
at
org.apache.hadoop.security.UserGroupInformation.isSecurityEnabled(UserGroupInformation.java:216)
at
org.apache.hadoop.security.KerberosName.clinit(KerberosName.java:83)
at
org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:189)
at
org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:159)
at
org.apache.hadoop.security.UserGroupInformation.isSecurityEnabled(UserGroupInformation.java:216)
at
org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:409)
at
org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:395)
at
org.apache.hadoop.fs.FileSystem$Cache$Key.init(FileSystem.java:1436)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1337)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:244)
at org.apache.hadoop.fs.Path.getFileSystem(Path.java:187)
at org.apache.hadoop.hbase.util.FSUtils.getRootDir(FSUtils.java:364)
at
org.apache.hadoop.hbase.master.MasterFileSystem.init(MasterFileSystem.java:81)
at
org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:346)
at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:282)
at
org.apache.hadoop.hbase.master.HMasterCommandLine$LocalHMaster.run(HMasterCommandLine.java:193)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.configuration.Configuration
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 22 more
On Oct 14, 2011, at 3:35 PM, Jignesh Patel wrote:
Can somebody help me to work Hadoop 0.20.205.0 and Hbase 0.90.4 in pseudo
mode. This is third day in a row and I am not able to make it run.
The details are as follows
http://pastebin.com/KrJePt64
If this is not going to work then let me know which version I should use to
get it run.
On Oct 14, 2011, at 2:46 PM, Jignesh Patel wrote:
On Oct 14, 2011, at 2:44 PM, Jignesh Patel wrote:
According to start-hase.sh if distributed mode=flase then I am supposed to
start only masters it doesn't required to start zookeeper, see the script
below from the file.
if [ $distMode == 'false' ]
then
$bin/hbase-daemon.sh start master
else
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} start zookeeper
$bin/hbase-daemon.sh --config ${HBASE_CONF_DIR} start master
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} \
--hosts ${HBASE_REGIONSERVERS} start regionserver
$bin/hbase-daemons.sh --config ${HBASE_CONF_DIR} \
--hosts ${HBASE_BACKUP_MASTERS} start master-backup
fi
According to above script the zookeeper is not required to start as I am
not running server in distributed mode but in pseudo mode. But then it is
giving error for zookeeper is not able to connect.
-Jignesh
is supposed to start zookeeper and master as per the
On Fri, Oct 14, 2011 at 2:31 AM, Ramya Sunil [via Lucene]
ml-node+s472066n342086...@n3.nabble.com wrote:
Jignesh,
I have been able to deploy Hbase 0.90.3 and 0.90.4 with hadoop-0.20.205.
Below are the steps I followed:
1. Make sure none of hbasemaster, regionservers or zookeeper are running.
As
Matt pointed out, turn on append.
2. hbase-daemon.sh --config $HBASE_CONF_DIR start zookeeper
3. hbase-daemon.sh --config $HBASE_CONF_DIR start master
4. hbase-daemon.sh --config $HBASE_CONF_DIR start regionserver
5. hbase --config $HBASE_CONF_DIR shell
Hope it helps.
Ramya
On Thu, Oct 13, 2011 at 4:11 PM, Jignesh Patel [hidden email] wrote:
Is there a way to resolve this weird problem.
bin
Re: Hbase with Hadoop
Cool Everything is good now after copying commons-configuration.jar file. No need to start zookeeper or master. Only start hbase-start.sh and everything works. I see my status changed, On Oct 14, 2011, at 5:16 PM, Jignesh Patel wrote: undError: org/apache/commons/configuration/Configuration
Re: Hbase with Hadoop
Jignesh, passing --config path_to_hbase_configs would help. Like: bin/hbase --config path_to_hbase_configs shell -Giri On 10/12/11 4:50 PM, Matt Foley wrote: Hi Jignesh, Not clear what's going on with your ZK, but as a starting point, the hsync/flush feature in 205 was implemented with an on-off switch. Make sure you've turned it on by setting *dfs.support.append *to true in the hdfs-site.xml config file. Also, are you installing Hadoop with security turned on or off? I'll gather some other config info that should help. --Matt On Wed, Oct 12, 2011 at 1:47 PM, Jignesh Pateljign...@websoft.com wrote: When I tried to run Hbase 0.90.4 with hadoop-.0.20.205.0 I got following error Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase shell HBase Shell; enter 'helpRETURN' for list of supported commands. Type exitRETURN to leave the HBase Shell Version 0.90.4, r1150278, Sun Jul 24 15:53:29 PDT 2011 hbase(main):001:0 status ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. And when I tried to stop Hbase I continuously sees dot being printed and no sign of stopping it. Not sure why it just simply stop it. stopping hbase...…. On Oct 12, 2011, at 3:19 PM, Jignesh Patel wrote: The new plugin works after deleting eclipse and reinstalling it. On Oct 12, 2011, at 2:39 PM, Jignesh Patel wrote: I have installed Hadoop-0.20.205.0 but when I replace the hadoop 0.20.204.0 eclipse plugin with the 0.20.205.0, eclipse is not recognizing it. -Jignesh On Oct 12, 2011, at 12:31 PM, Vinod Gupta Tankala wrote: its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. thanks On Wed, Oct 12, 2011 at 9:26 AM, Jignesh Pateljign...@websoft.com wrote: Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.com wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com. -- -Giri
Re: Hbase with Hadoop
Actually real problem is here http://pastebin.com/jyvpivt6 Moreover I didn't find any command like -config. -Jignesh On Oct 13, 2011, at 2:02 AM, giridharan kesavan wrote: Jignesh, passing --config path_to_hbase_configs would help. Like: bin/hbase --config path_to_hbase_configs shell -Giri On 10/12/11 4:50 PM, Matt Foley wrote: Hi Jignesh, Not clear what's going on with your ZK, but as a starting point, the hsync/flush feature in 205 was implemented with an on-off switch. Make sure you've turned it on by setting *dfs.support.append *to true in the hdfs-site.xml config file. Also, are you installing Hadoop with security turned on or off? I'll gather some other config info that should help. --Matt On Wed, Oct 12, 2011 at 1:47 PM, Jignesh Pateljign...@websoft.com wrote: When I tried to run Hbase 0.90.4 with hadoop-.0.20.205.0 I got following error Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase shell HBase Shell; enter 'helpRETURN' for list of supported commands. Type exitRETURN to leave the HBase Shell Version 0.90.4, r1150278, Sun Jul 24 15:53:29 PDT 2011 hbase(main):001:0 status ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. And when I tried to stop Hbase I continuously sees dot being printed and no sign of stopping it. Not sure why it just simply stop it. stopping hbase...…. On Oct 12, 2011, at 3:19 PM, Jignesh Patel wrote: The new plugin works after deleting eclipse and reinstalling it. On Oct 12, 2011, at 2:39 PM, Jignesh Patel wrote: I have installed Hadoop-0.20.205.0 but when I replace the hadoop 0.20.204.0 eclipse plugin with the 0.20.205.0, eclipse is not recognizing it. -Jignesh On Oct 12, 2011, at 12:31 PM, Vinod Gupta Tankala wrote: its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. thanks On Wed, Oct 12, 2011 at 9:26 AM, Jignesh Pateljign...@websoft.com wrote: Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.com wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com. -- -Giri
Re: Hbase with Hadoop
Another thing I am using hadoop in psuedo single node server. But even if I don't start Hbase I will have same error. ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418992.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
You'll need two hyphens before 'config'. On 13-Oct-2011, at 9:00 PM, jigneshmpatel wrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Hi Jignesh, the option is --config (with a double dash) not -config (with a single dash). Please let me know if that works. --Matt On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.comwrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s) in 0.5140 seconds hbase(main):002:0 list 'newtable' TABLE newtable 1 row(s) in 0.0120 seconds OR $ export HBASE_CONF_DIR=/home/ramya/hbase/conf $ hbase shell hbase(main):001:0 list 'newtable' TABLE newtable 1 row(s) in 0.3860 seconds Thanks Ramya On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.comwrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
ok --config worked but it is showing me same error. How to resolve this. http://pastebin.com/UyRBA7vX On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote: Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s) in 0.5140 seconds hbase(main):002:0 list 'newtable' TABLE newtable 1 row(s) in 0.0120 seconds OR $ export HBASE_CONF_DIR=/home/ramya/hbase/conf $ hbase shell hbase(main):001:0 list 'newtable' TABLE newtable 1 row(s) in 0.3860 seconds Thanks Ramya On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.comwrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Jignesh, I dont see zookeeper running on your master. My cluster reads the following: $ jps 15315 Jps 13590 HMaster 15235 HQuorumPeer Can you please shutdown your Hmaster and run the following first: $ hbase-daemon.sh start zookeeper And then start your hbasemaster and regionservers? Thanks Ramya On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel jign...@websoft.com wrote: ok --config worked but it is showing me same error. How to resolve this. http://pastebin.com/UyRBA7vX On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote: Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s) in 0.5140 seconds hbase(main):002:0 list 'newtable' TABLE newtable 1 row(s) in 0.0120 seconds OR $ export HBASE_CONF_DIR=/home/ramya/hbase/conf $ hbase shell hbase(main):001:0 list 'newtable' TABLE newtable 1 row(s) in 0.3860 seconds Thanks Ramya On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.com wrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Ramya, Based on Hbase the definite guide it seems zookeeper being started by hbase no need to start it separately(may be this is changed for 0.90.4. Anyways now following is the updated status. Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/start-hbase.sh starting master, logging to /users/hadoop-user/hadoop-hbase/logs/hbase-hadoop-user-master-Jignesh-MacBookPro.local.out Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum Jignesh-MacBookPro:hadoop-hbase hadoop-user$ jps 41486 HQuorumPeer 38814 SecondaryNameNode 41578 Jps 38878 JobTracker 38726 DataNode 38639 NameNode 38964 TaskTracker On Oct 13, 2011, at 3:23 PM, Ramya Sunil wrote: Jignesh, I dont see zookeeper running on your master. My cluster reads the following: $ jps 15315 Jps 13590 HMaster 15235 HQuorumPeer Can you please shutdown your Hmaster and run the following first: $ hbase-daemon.sh start zookeeper And then start your hbasemaster and regionservers? Thanks Ramya On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel jign...@websoft.com wrote: ok --config worked but it is showing me same error. How to resolve this. http://pastebin.com/UyRBA7vX On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote: Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s) in 0.5140 seconds hbase(main):002:0 list 'newtable' TABLE newtable 1 row(s) in 0.0120 seconds OR $ export HBASE_CONF_DIR=/home/ramya/hbase/conf $ hbase shell hbase(main):001:0 list 'newtable' TABLE newtable 1 row(s) in 0.3860 seconds Thanks Ramya On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.com wrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
You already have zookeeper running on 2181 according to your jps output. That is the reason, master seems to be complaining. Can you please stop zookeeper, verify that no daemons are running on 2181 and restart your master? On Thu, Oct 13, 2011 at 12:37 PM, Jignesh Patel jign...@websoft.com wrote: Ramya, Based on Hbase the definite guide it seems zookeeper being started by hbase no need to start it separately(may be this is changed for 0.90.4. Anyways now following is the updated status. Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/start-hbase.sh starting master, logging to /users/hadoop-user/hadoop-hbase/logs/hbase-hadoop-user-master-Jignesh-MacBookPro.local.out Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum Jignesh-MacBookPro:hadoop-hbase hadoop-user$ jps 41486 HQuorumPeer 38814 SecondaryNameNode 41578 Jps 38878 JobTracker 38726 DataNode 38639 NameNode 38964 TaskTracker On Oct 13, 2011, at 3:23 PM, Ramya Sunil wrote: Jignesh, I dont see zookeeper running on your master. My cluster reads the following: $ jps 15315 Jps 13590 HMaster 15235 HQuorumPeer Can you please shutdown your Hmaster and run the following first: $ hbase-daemon.sh start zookeeper And then start your hbasemaster and regionservers? Thanks Ramya On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel jign...@websoft.com wrote: ok --config worked but it is showing me same error. How to resolve this. http://pastebin.com/UyRBA7vX On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote: Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s) in 0.5140 seconds hbase(main):002:0 list 'newtable' TABLE newtable 1 row(s) in 0.0120 seconds OR $ export HBASE_CONF_DIR=/home/ramya/hbase/conf $ hbase shell hbase(main):001:0 list 'newtable' TABLE newtable 1 row(s) in 0.3860 seconds Thanks Ramya On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.com wrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Ok now the problem is if I only use bin/hbase-start.sh then it doesn't start zookeeper. But if I use bin/hbase-daemon.sh start zookeeper before starting bin/hbase-start.sh then it will try to start zookeeper at port 2181 and then I have following error. Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum So I am wondering if bin/hbase-start.sh is trying to start zookeeper then while zookeeper is not running it should start the zookeeper. I only get the error if zookeeper already running. -Jignesh On Oct 13, 2011, at 4:53 PM, Ramya Sunil wrote: You already have zookeeper running on 2181 according to your jps output. That is the reason, master seems to be complaining. Can you please stop zookeeper, verify that no daemons are running on 2181 and restart your master? On Thu, Oct 13, 2011 at 12:37 PM, Jignesh Patel jign...@websoft.com wrote: Ramya, Based on Hbase the definite guide it seems zookeeper being started by hbase no need to start it separately(may be this is changed for 0.90.4. Anyways now following is the updated status. Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/start-hbase.sh starting master, logging to /users/hadoop-user/hadoop-hbase/logs/hbase-hadoop-user-master-Jignesh-MacBookPro.local.out Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum Jignesh-MacBookPro:hadoop-hbase hadoop-user$ jps 41486 HQuorumPeer 38814 SecondaryNameNode 41578 Jps 38878 JobTracker 38726 DataNode 38639 NameNode 38964 TaskTracker On Oct 13, 2011, at 3:23 PM, Ramya Sunil wrote: Jignesh, I dont see zookeeper running on your master. My cluster reads the following: $ jps 15315 Jps 13590 HMaster 15235 HQuorumPeer Can you please shutdown your Hmaster and run the following first: $ hbase-daemon.sh start zookeeper And then start your hbasemaster and regionservers? Thanks Ramya On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel jign...@websoft.com wrote: ok --config worked but it is showing me same error. How to resolve this. http://pastebin.com/UyRBA7vX On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote: Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s) in 0.5140 seconds hbase(main):002:0 list 'newtable' TABLE newtable 1 row(s) in 0.0120 seconds OR $ export HBASE_CONF_DIR=/home/ramya/hbase/conf $ hbase shell hbase(main):001:0 list 'newtable' TABLE newtable 1 row(s) in 0.3860 seconds Thanks Ramya On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.com wrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Is there a way to resolve this weird problem. bin/hbase-start.sh is supposed to start zookeeper but it doesn't start. But on the other side if zookeeper up and running then it says Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum On Oct 13, 2011, at 5:40 PM, Jignesh Patel wrote: Ok now the problem is if I only use bin/hbase-start.sh then it doesn't start zookeeper. But if I use bin/hbase-daemon.sh start zookeeper before starting bin/hbase-start.sh then it will try to start zookeeper at port 2181 and then I have following error. Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum So I am wondering if bin/hbase-start.sh is trying to start zookeeper then while zookeeper is not running it should start the zookeeper. I only get the error if zookeeper already running. -Jignesh On Oct 13, 2011, at 4:53 PM, Ramya Sunil wrote: You already have zookeeper running on 2181 according to your jps output. That is the reason, master seems to be complaining. Can you please stop zookeeper, verify that no daemons are running on 2181 and restart your master? On Thu, Oct 13, 2011 at 12:37 PM, Jignesh Patel jign...@websoft.com wrote: Ramya, Based on Hbase the definite guide it seems zookeeper being started by hbase no need to start it separately(may be this is changed for 0.90.4. Anyways now following is the updated status. Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/start-hbase.sh starting master, logging to /users/hadoop-user/hadoop-hbase/logs/hbase-hadoop-user-master-Jignesh-MacBookPro.local.out Couldnt start ZK at requested address of 2181, instead got: 2182. Aborting. Why? Because clients (eg shell) wont be able to find this ZK quorum Jignesh-MacBookPro:hadoop-hbase hadoop-user$ jps 41486 HQuorumPeer 38814 SecondaryNameNode 41578 Jps 38878 JobTracker 38726 DataNode 38639 NameNode 38964 TaskTracker On Oct 13, 2011, at 3:23 PM, Ramya Sunil wrote: Jignesh, I dont see zookeeper running on your master. My cluster reads the following: $ jps 15315 Jps 13590 HMaster 15235 HQuorumPeer Can you please shutdown your Hmaster and run the following first: $ hbase-daemon.sh start zookeeper And then start your hbasemaster and regionservers? Thanks Ramya On Thu, Oct 13, 2011 at 12:01 PM, Jignesh Patel jign...@websoft.com wrote: ok --config worked but it is showing me same error. How to resolve this. http://pastebin.com/UyRBA7vX On Oct 13, 2011, at 1:34 PM, Ramya Sunil wrote: Hi Jignesh, --config (i.e. - - config) is the option to use and not -config. Alternatively you can also set HBASE_CONF_DIR. Below is the exact command line: $ hbase --config /home/ramya/hbase/conf shell hbase(main):001:0 create 'newtable','family' 0 row(s) in 0.5140 seconds hbase(main):002:0 list 'newtable' TABLE newtable 1 row(s) in 0.0120 seconds OR $ export HBASE_CONF_DIR=/home/ramya/hbase/conf $ hbase shell hbase(main):001:0 list 'newtable' TABLE newtable 1 row(s) in 0.3860 seconds Thanks Ramya On Thu, Oct 13, 2011 at 8:30 AM, jigneshmpatel jigneshmpa...@gmail.com wrote: There is no command like -config see below Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase -config ./config shell Unrecognized option: -config Could not create the Java virtual machine. -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3418924.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.comwrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.comwrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. thanks On Wed, Oct 12, 2011 at 9:26 AM, Jignesh Patel jign...@websoft.com wrote: Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.com wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
I have installed Hadoop-0.20.205.0 but when I replace the hadoop 0.20.204.0 eclipse plugin with the 0.20.205.0, eclipse is not recognizing it. -Jignesh On Oct 12, 2011, at 12:31 PM, Vinod Gupta Tankala wrote: its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. thanks On Wed, Oct 12, 2011 at 9:26 AM, Jignesh Patel jign...@websoft.com wrote: Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.com wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
The new plugin works after deleting eclipse and reinstalling it. On Oct 12, 2011, at 2:39 PM, Jignesh Patel wrote: I have installed Hadoop-0.20.205.0 but when I replace the hadoop 0.20.204.0 eclipse plugin with the 0.20.205.0, eclipse is not recognizing it. -Jignesh On Oct 12, 2011, at 12:31 PM, Vinod Gupta Tankala wrote: its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. thanks On Wed, Oct 12, 2011 at 9:26 AM, Jignesh Patel jign...@websoft.com wrote: Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.com wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
When I tried to run Hbase 0.90.4 with hadoop-.0.20.205.0 I got following error Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase shell HBase Shell; enter 'helpRETURN' for list of supported commands. Type exitRETURN to leave the HBase Shell Version 0.90.4, r1150278, Sun Jul 24 15:53:29 PDT 2011 hbase(main):001:0 status ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. And when I tried to stop Hbase I continuously sees dot being printed and no sign of stopping it. Not sure why it just simply stop it. stopping hbase...…. On Oct 12, 2011, at 3:19 PM, Jignesh Patel wrote: The new plugin works after deleting eclipse and reinstalling it. On Oct 12, 2011, at 2:39 PM, Jignesh Patel wrote: I have installed Hadoop-0.20.205.0 but when I replace the hadoop 0.20.204.0 eclipse plugin with the 0.20.205.0, eclipse is not recognizing it. -Jignesh On Oct 12, 2011, at 12:31 PM, Vinod Gupta Tankala wrote: its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. thanks On Wed, Oct 12, 2011 at 9:26 AM, Jignesh Patel jign...@websoft.com wrote: Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.com wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Hi Jignesh, Not clear what's going on with your ZK, but as a starting point, the hsync/flush feature in 205 was implemented with an on-off switch. Make sure you've turned it on by setting *dfs.support.append *to true in the hdfs-site.xml config file. Also, are you installing Hadoop with security turned on or off? I'll gather some other config info that should help. --Matt On Wed, Oct 12, 2011 at 1:47 PM, Jignesh Patel jign...@websoft.com wrote: When I tried to run Hbase 0.90.4 with hadoop-.0.20.205.0 I got following error Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase shell HBase Shell; enter 'helpRETURN' for list of supported commands. Type exitRETURN to leave the HBase Shell Version 0.90.4, r1150278, Sun Jul 24 15:53:29 PDT 2011 hbase(main):001:0 status ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. And when I tried to stop Hbase I continuously sees dot being printed and no sign of stopping it. Not sure why it just simply stop it. stopping hbase...…. On Oct 12, 2011, at 3:19 PM, Jignesh Patel wrote: The new plugin works after deleting eclipse and reinstalling it. On Oct 12, 2011, at 2:39 PM, Jignesh Patel wrote: I have installed Hadoop-0.20.205.0 but when I replace the hadoop 0.20.204.0 eclipse plugin with the 0.20.205.0, eclipse is not recognizing it. -Jignesh On Oct 12, 2011, at 12:31 PM, Vinod Gupta Tankala wrote: its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. thanks On Wed, Oct 12, 2011 at 9:26 AM, Jignesh Patel jign...@websoft.com wrote: Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.com wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Hi Jignesh, I have been running quite a few hbase tests on Hadoop 0.20.205 without any issues on both secure and non secure clusters. I have seen the error you mentioned when one has not specified the hbase config directory. Can you please try hbase --config path to hbase config directory shell and check if that solves the problem? Thanks Ramya On Wed, Oct 12, 2011 at 4:50 PM, Matt Foley mfo...@hortonworks.com wrote: Hi Jignesh, Not clear what's going on with your ZK, but as a starting point, the hsync/flush feature in 205 was implemented with an on-off switch. Make sure you've turned it on by setting *dfs.support.append *to true in the hdfs-site.xml config file. Also, are you installing Hadoop with security turned on or off? I'll gather some other config info that should help. --Matt On Wed, Oct 12, 2011 at 1:47 PM, Jignesh Patel jign...@websoft.com wrote: When I tried to run Hbase 0.90.4 with hadoop-.0.20.205.0 I got following error Jignesh-MacBookPro:hadoop-hbase hadoop-user$ bin/hbase shell HBase Shell; enter 'helpRETURN' for list of supported commands. Type exitRETURN to leave the HBase Shell Version 0.90.4, r1150278, Sun Jul 24 15:53:29 PDT 2011 hbase(main):001:0 status ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a sign that the server has too many connections (30 is the default). Consider inspecting your ZK server logs for that error and then make sure you are reusing HBaseConfiguration as often as you can. See HTable's javadoc for more information. And when I tried to stop Hbase I continuously sees dot being printed and no sign of stopping it. Not sure why it just simply stop it. stopping hbase...…. On Oct 12, 2011, at 3:19 PM, Jignesh Patel wrote: The new plugin works after deleting eclipse and reinstalling it. On Oct 12, 2011, at 2:39 PM, Jignesh Patel wrote: I have installed Hadoop-0.20.205.0 but when I replace the hadoop 0.20.204.0 eclipse plugin with the 0.20.205.0, eclipse is not recognizing it. -Jignesh On Oct 12, 2011, at 12:31 PM, Vinod Gupta Tankala wrote: its free and open source too.. basically, their releases are ahead of public releases of hadoop/hbase - from what i understand, major bug fixes and enhancements are checked in to their branch first and then eventually make it to public release branches. thanks On Wed, Oct 12, 2011 at 9:26 AM, Jignesh Patel jign...@websoft.com wrote: Sorry to here that. Is CDH3 is a open source or a paid version? -jignesh On Oct 12, 2011, at 11:58 AM, Vinod Gupta Tankala wrote: for what its worth, i was in a similar situation/dilemma few days ago and got frustrated figuring out what version combination of hadoop/hbase to use and how to build hadoop manually to be compatible with hbase. the build process didn't work for me either. eventually, i ended up using cloudera distribution and i think it saved me a lot of headache and time. thanks On Tue, Oct 11, 2011 at 8:29 PM, jigneshmpatel jigneshmpa...@gmail.com wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Hbase with Hadoop
Can I integrate HBase 0.90.4 with hadoop 0.20.204.0 ? -Jignesh
Re: Hbase with Hadoop
Hi Jignesh, 0.20.204.0 does not have hflush/sync support, but 0.20.205.0 does. Without HDFS hsync, HBase will still work, but is subject to data loss if the datanode is restarted. In 205, this deficiency is fixed. 0.20.205.0-rc2 is up for vote in common-dev@. Please try it out with HBase :-) We've been using it with HBase 0.90.3 and it works, with some config adjustments. --Matt, RM for 0.20.205.0 On Tue, Oct 11, 2011 at 2:11 PM, Jignesh Patel jign...@websoft.com wrote: Can I integrate HBase 0.90.4 with hadoop 0.20.204.0 ? -Jignesh
Re: Hbase with Hadoop
Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: Hbase with Hadoop
Matt, I'd like to re-enforce the inquiry about posting (or blogging perhaps ;) details about Hbase/0.20.205 coexistence. I am sure lotta people will benefit from this. Thanks in advance, Cos On Tue, Oct 11, 2011 at 08:29PM, jigneshmpatel wrote: Matt, Thanks a lot. Just wanted to have some more information. If hadoop 0.2.205.0 voted by the community members then will it become major release? And what if it is not approved by community members. And as you said I do like to use 0.90.3 if it works. If it is ok, can you share the deails of those configuration changes? -Jignesh -- View this message in context: http://lucene.472066.n3.nabble.com/Hbase-with-Hadoop-tp3413950p3414658.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
Re: HBASE on Hadoop
Setup a distributed HBase cluster. On each node that runs TaskTracker and Datanode, also run a HBase RegionServer. On the node that runs JobTracker and Namenode, run the HBase Master. There is a getting started guide here. http://hbase.apache.org/book/notsoquick.html Check out the HBase user list for more. http://hbase.apache.org/mail-lists.html On Wed, Apr 27, 2011 at 4:58 PM, gaurav garg gaurav.gar...@gmail.comwrote: Praveenesh, I will recommend you to read the google Big Table paper( http://labs.google.com/papers/bigtable.html) which is a foundation for the hbase. Terminology is little different though: Mapping of terms(not exhaustive): *** Big Table Hbase *** Master Server HMaster Tablet region Tablet serverregionserver chubbyzookeeper (It is apache implementation of distributed synchronization server) Hbase stores data on hadoop dfs. hbase is a client of hdfs. Hence hadoop will automatically distribute and replicate the data across your hadoop cluster. Hbase master and regionservers formats/transforms the data and relies on hadoop for storage and retrieval. Hbase cluster can run on a separate set of nodes or it can even share hadoop nodes. Once you have setup hdfs cluster, hbase cluster can be easily setup. Thanks Gaurav On Tue, Apr 26, 2011 at 10:55 AM, praveenesh kumar praveen...@gmail.com wrote: Hello everyone, Thanks everyone for guiding me everytime. I am able to setup hadoop cluster of 10 nodes. Now comes HBASE..!!! I am new to all this... My problem is I have huge data to analyze. so shall I go for single node Hbase installation on all nodes or go for distributed Hbase installation.?? How distributed installation is different from single node installaion ?? Now suppose if I have distributed Hbase... and If I design some table on my master node.. and then store data on it.. say around 100M. How the data is going to be distributed.. Will HBASE do it automatically or we have to write codes for getting it distributed ?? Is there any good tutorial that tells us more about HBase and how to work on it ??? Thanks, Praveenesh
HBASE on Hadoop
Hello everyone, Thanks everyone for guiding me everytime. I am able to setup hadoop cluster of 10 nodes. Now comes HBASE..!!! I am new to all this... My problem is I have huge data to analyze. so shall I go for single node Hbase installation on all nodes or go for distributed Hbase installation.?? How distributed installation is different from single node installaion ?? Now suppose if I have distributed Hbase... and If I design some table on my master node.. and then store data on it.. say around 100M. How the data is going to be distributed.. Will HBASE do it automatically or we have to write codes for getting it distributed ?? Is there any good tutorial that tells us more about HBase and how to work on it ??? Thanks, Praveenesh
Help with Hbase and Hadoop on S3
I can't seem to get Hbase to run using the hadoop i have connected to my s3 bucket Running Hbase 0.19.2 Hadoop 0.19.2 Hadoop-site.xml configuration property namefs.default.name/name values3://hbase/value /property property namefs.s3.awsAccessKeyId/name valueID/value /property property namefs.s3.awsSecretAccessKey/name valueSECRET/value /property /configuration and it seems to start up no problem my hbase-site.xml configuration property namehbase.master/name value174.129.15.236:6/value descriptionThe host and port that the HBase master runs at. A value of 'local' runs the master and a regionserver in a single process. /description /property property namehbase.rootdir/name values3://hbase/value descriptionThe directory shared by region servers. /description /property /configuration keeps giving me ] 2009-08-06 17:20:44,526 ERROR org.apache.hadoop.hbase.master.HMaster: Can not start master java.lang.NoClassDefFoundError: org/jets3t/service/S3ServiceException at org.apache.hadoop.fs.s3.S3FileSystem.createDefaultStore(S3FileSystem.java:84) at org.apache.hadoop.fs.s3.S3FileSystem.initialize(S3FileSystem.java:74) at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1367) at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:56) at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1379) at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:215) at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:120) at org.apache.hadoop.hbase.master.HMaster.init(HMaster.java:186) at org.apache.hadoop.hbase.master.HMaster.init(HMaster.java:156) at org.apache.hadoop.hbase.LocalHBaseCluster.init(LocalHBaseCluster.java:96) at org.apache.hadoop.hbase.LocalHBaseCluster.init(LocalHBaseCluster.java:78) at org.apache.hadoop.hbase.master.HMaster.doMain(HMaster.java:1013) at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1057) Caused by: java.lang.ClassNotFoundException: org.jets3t.service.S3ServiceException at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) what am i doing wrong here? Ananth T Sarathy
