Hi Pallavi, Can you use jstack on the NameNode and paste the results? You can find the pid by running "jps" as the hadoop user. Also paste the last few lines of the namenode log file.
Thanks -Todd On Wed, May 27, 2009 at 1:34 AM, Pallavi Palleti < pallavi.pall...@corp.aol.com> wrote: > Hi all, > > We have a cluster of 50 machines and we had to restart hadoop for some > reason. When we restart, the jobtracker is up. I can see the ui showing > everything perfectly fine. But the dfs ui is stuck. When I look into > namenode logs, it says, it reached 0.990, safe mode would be turned off in 0 > secs . But, even after waiting for 2 hours, I couldn't see it turned off. > Looking into datanode logs, every datanode is verifying data blocks and > reporting bad blocks to namenode. In most of the machines, verification is > successful. But, it is still processing some blocks. The question is, any > idea how long do we need to wait for this to be up? Also, hadoop dfs -report > is also not responding. Any idea, what would be the issue? Will it be ok, if > I forcibly switch off safemode? > > > Thanks in Advance, > Pallavi > >
