connecting hbase using java

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This topic contains 1 reply, has 2 voices, and was last updated by  tedr 2 years, 1 month ago.

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  • #19685

    Hi all

    I am using hadoop-1.1.2 and hbase-0.94.6 in pseudo distributed mode on ubuntu 12.10 with openjdk7.

    I want to create a table and load data into it using java

    I tried to follow this link https://thinkasgeek.wordpress.com/2011/03/25/hbase-and-eclispe-ide-integration/
    but I am getting warning

    The constructor HBaseConfiguration() is deprecated

    you can see my imported external jar and warning at http://i.troll.ws/0f3b66a9.png

    also when I run this project as java application then I am getting option 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.(HConstants.java:691)
    at org.apache.hadoop.hbase.HTableDescriptor.(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

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  • #19754

    tedr
    Member

    Hi Alok,

    Thanks for your question.

    It is recommended that you move off of OpenJDK7 and install Sun/Oracle JDK1.6. There are some incompatibilities between Hadoop and JDK7 (Oracle or Open). If you still have this error after changing you java version let us know.

    Thanks,
    Ted

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