I want to access and study the hadoop cluster's metadata which is stored in
fsimage file on namenode machine. i came to know that offLineImageViewer is
used to do so. But when i am trying doing it i am getting an exception.
/usr/hadoop/hadoop-1.2.1# bin/hadoop oiv -i fsimage -o fsimage.txt Warning:
$HADOOP_HOME is deprecated.
Exception in thread "main" java.lang.NullPointerException at
org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageViewer.go(OfflineImageViewer.java:141)
at
org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageViewer.main(OfflineImageViewer.java:261)
i am not able to solve this error. Is it due to that warning (Warning:
$HADOOP_HOME is deprecated.) or there is something else?I am having
hadoop-1.2.1 version
