Sharing data through Kerberos

2012-04-09 Thread Rahul Das
Hi, I am trying out the possibilities of Hadoop with kerberos. Can somebody clear my doubts in following questions 1) Does the Hadoop with Kerberos prevent the HDFS user data from sharing? 2) If some user wants to share the HDFS data with other user/group then what are the steps to follow. 3) Can

Dananode not sending the Hearbeat messages to Namenode

2011-08-02 Thread Rahul Das
Hi, I found a strange behavior in my cluster. The data nodes stop sending any information randomly (no logs coming). So the namenode thinks its down. But after some time ( approx 30 mints) the datanode nodes comes up and start behaving properly. I tried finding any error log, but the datanode node

Re: Hadoop Namenode problem

2011-07-28 Thread Rahul Das
Jul 28, 2011, at 5:06, Rahul Das wrote: > > Hi Joey, > > The log is too big to attach into mail. What I found that there is no error > during this time. > Only few Warnings are coming like > > 2011-07-21 14:13:47,814 WARN > org.apache.hadoop.hdfs.server.namenode.FSNamesys

Re: Hadoop Namenode problem

2011-07-28 Thread Rahul Das
e time in this > SecondaryNameNode log (2011-07-21 16:00-16:30)? > > -Joey > > > On Fri, Jul 22, 2011 at 8:29 AM, Rahul Das wrote: > >> Yes I have a secondary Namenode running. Here are the log for >> SecondaryNamenode >> >> 2011-07-21 16:02:47,908 INFO

Re: Hadoop Namenode problem

2011-07-22 Thread Rahul Das
1 at 5:40 PM, Joey Echeverria wrote: > Do you have an instance of the SecondaryNamenode in your cluster? > > -Joey > > > On Fri, Jul 22, 2011 at 3:15 AM, Rahul Das wrote: > >> Hi, >> >> I am running a Hadoop cluster with 20 Data node. Yesterday I found that

Hadoop Namenode problem

2011-07-22 Thread Rahul Das
Hi, I am running a Hadoop cluster with 20 Data node. Yesterday I found that the Namenode was not responding ( No write/read to HDFS is happening). It got stuck for few hours, then I shut down the Namenode and found the following error from the Name node log. 2011-07-21 16:15:31,500 WARN org.apach