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
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
I read that the namenode keeps all the metadata record in main memory right for
fast access.
I want to study the code where the namenode is instructed to do so i.e. to keep
metadata record in main memory. where can i find the source code file for this
namenode memory management? i am using
thanx a lot...is working fine now
From: ha...@cloudera.com
Date: Sat, 25 Jan 2014 12:15:08 +0530
Subject: Re: Datanode Shutting down automatically
To: user@hadoop.apache.org
You reformatted your NameNode at some point, but likely failed to also
clear out the DN data directories, which
