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HBase, mail # user - connecting Hbase using java


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Re: connecting Hbase using java
Ted Yu 2013-03-31, 03:39
Have you gone over the related section in HBase book which I mentioned ?

>From the screen shot, you were missing HBase project which you can import
through File -> Import, then existing project.

Cheers
On Sat, Mar 30, 2013 at 8:00 PM, Alok Singh Mahor <[EMAIL PROTECTED]>wrote:

> thank you Ted, Mohammad and Stephen
> now I ahve switched to eclipse and following
>
> https://thinkasgeek.wordpress.com/2011/03/25/hbase-and-eclispe-ide-integration/#comment-29
>
> but in this code I am getting warning that
> <warning>The constructor HBaseConfiguration() is deprecated</warning>
>
> and when I run this project as java application I am getting a pop up to
> select java application.
> you can see that at http://i.troll.ws/d7340d3c.png
>
> I dont know what I have to select. but my java class name is sample so I am
> selecting sample
> then I am runtime errors
>
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/commons/lang/ArrayUtils
>     at org.apache.hadoop.hbase.HConstants.<clinit>(HConstants.java:691)
>     at
>
> org.apache.hadoop.hbase.HTableDescriptor.<clinit>(HTableDescriptor.java:1144)
>     at sample.main(sample.java:11)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.commons.lang.ArrayUtils
>     at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
>     at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
>     ... 3 more
>
> could you tell me where I am wrong and how to correct that warning?
> thank you
>
>
> On Sat, Mar 30, 2013 at 8:59 PM, Stephen Boesch <[EMAIL PROTECTED]> wrote:
>
> > have you included the jar files under:
> >
> >
>  CLASSPATH=$HADOOP_HOME/*:$HADOOP_HOME/lib/*:$HBASE_HOME/*:$HBASE_HOME/lib/*:$CLASSPATH
> >
> > cd $HBASE_HOME/src
> > javac
> > examples/mapreduce/org/apache/hadoop/hbase/mapreduce/IndexBuilder.java
> >
> >
> >
> >
> > 2013/3/30 Alok Singh Mahor <[EMAIL PROTECTED]>
> >
> > > Hi all,
> > > I have set up Hbase in pseudo distributed mode.
> > > I am using hadoop-1.1.2  hbase-0.94.6 and setup files are in Home
> > > directory.
> > >
> > > content of ~/hbase-0.94.6/conf/hbase-site.xml is
> > >
> > > <configuration>
> > > <property>
> > >         <name>hbase.cluster.distributed</name>
> > >         <value>true</value>
> > > </property>
> > > <property>
> > >     <name>hbase.rootdir</name>
> > >     <value>hdfs://localhost:9000/hbase</value>
> > >   </property>
> > > <property>
> > >         <name>dfs.replication</name>
> > >         <value>1</value>
> > >         <description>The replication count for HLog and HFile storage.
> > > Should not be greater than HDFS datanode count.
> > >         </description>
> > >     </property>
> > > </configuration>
> > >
> > > and I am able to create tables using hbase shell from its prompt.
> > > but I want to create table and load data programatically using java.
> > >
> > > I tried to follow
> > >
> > >
> >
> http://autofei.wordpress.com/2012/04/02/java-example-code-using-hbase-data-model-operations/
> > >
> > > without eclipse but I am getting error that packages does not exist.
> > >
> > > could any one give me clean and simple steps to load data in Hbase
> > > programatically using java.
> > >
> > > thanks in advance
> > >
> >
>