Hi Vamshi,
You have to add zookeeper host and port also in the code if your eclipse is on
different machine.
hbaseConfig.set("hbase.zookeeper.quorum", "<hostname>");
hbaseConfig.set("hbase.zookeeper.property.clientPort", "2181");
-stuti
-----Original Message-----
From: vamshi krishna [mailto:[email protected]]
Sent: Thursday, September 22, 2011 12:09 PM
To: [email protected]
Subject: writing data to hbase from java code in eclipse
Hi ,
i am trying to cretae and write data to a table in hbase. For that i am using
hadoop-0.20.2 and hbase -0.90.4 single machine and pseudo distributed mode. In
eclipse helios, i write on e samll program import
org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.util.Bytes;
import java.io.IOException;
public class PutExample {
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
Configuration conf = HBaseConfiguration.create();
HTable table = new HTable(conf, "testtable");
Put put = new Put(Bytes.toBytes("row1"));
put.add(Bytes.toBytes("colfam1"), Bytes.toBytes("qual1"),
Bytes.toBytes("val1"));
put.add(Bytes.toBytes("colfam1"), Bytes.toBytes("qual2"),
Bytes.toBytes("val2"));
table.put(put);
}
}
My hadoop , and hbase shell are working properly.i added
hadoop-0.20.2-core.jar, hbase-0.90.4.jar, commons-logging-1.0.4-api.jar,
log4j-1.4.15.jar, zookeeper-3.3.2.jar in to addexternal jars of buildpath in
the hbase project buildpath. I added HBASE_HOME/conf folder in addclassfolder
option of buildpath.
i selected hbase project ->right click-> run as java application i got
followong error.
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:zookeeper.version=3.3.2-1031432, built on 11/05/2010 05:32 GMT
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client environment:host.name
=vamshi-laptop
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:java.version=1.6.0_26
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client environment:java.vendor=Sun
Microsystems Inc.
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:java.home=/usr/lib/jvm/java-6-sun-1.6.0.26/jre
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:java.class.path=/home/hduser/workspace/InsertHbase/build/eclipse-classes:/home/hduser/Documents/HBASE_SOFTWARE/hbase-0.90.2.jar:/usr/local/hadoop-0.20.2/hadoop-0.20.2-core.jar:/home/hduser/Documents/HBASE_SOFTWARE/hbase-0.90.4/conf:/usr/local/hadoop-0.20.2/lib/commons-logging-api-1.0.4.jar:/usr/local/hadoop-0.20.2/lib/log4j-1.2.15.jar:/home/hduser/Documents/HBASE_SOFTWARE/hbase-0.90.4/lib/zookeeper-3.3.2.jar
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:java.library.path=/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/server:/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386:/usr/lib/jvm/java-6-sun-1.6.0.26/jre/../lib/i386:/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386/client:/usr/lib/jvm/java-6-sun-1.6.0.26/jre/lib/i386::/usr/java/packages/lib/i386:/lib:/usr/lib
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:java.io.tmpdir=/tmp
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:java.compiler=<NA>
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client environment:os.name=Linux
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client environment:os.arch=i386
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:os.version=2.6.32-33-generic
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client environment:user.name =hduser
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:user.home=/home/hduser
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Client
environment:user.dir=/home/hduser/workspace/InsertHbase
11/09/22 12:08:11 INFO zookeeper.ZooKeeper: Initiating client connection,
connectString=localhost:2181 sessionTimeout=180000 watcher=hconnection
11/09/22 12:08:11 INFO zookeeper.ClientCnxn: Opening socket connection to
server localhost/127.0.0.1:2181
11/09/22 12:08:11 INFO zookeeper.ClientCnxn: Socket connection established to
localhost/127.0.0.1:2181, initiating session
11/09/22 12:08:11 INFO zookeeper.ClientCnxn: Session establishment complete on
server localhost/127.0.0.1:2181, sessionid = 0x1328fb0fd440005, negotiated
timeout = 40000
22 Sep, 2011 12:08:11 PM
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation
prefetchRegionCache
WARNING: Encountered problems when prefetch META table:
org.apache.hadoop.hbase.TableNotFoundException: Cannot find row in .META.
for table: testtable, row=testtable,,99999999999999
at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:136)
at
org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:95)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.prefetchRegionCache(HConnectionManager.java:648)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:702)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:593)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:558)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:171)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:145)
at PutExample.main(PutExample.java:19)
Exception in thread "main" org.apache.hadoop.hbase.TableNotFoundException:
testtable
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:724)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:593)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:558)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:171)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:145)
at PutExample.main(PutExample.java:19)
please anyone help me, where i went wrong?
--
*Regards*
*
Vamshi Krishna
*
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