“Are you using the same Java version on both systems” ---Yes. “Can you test with one NN and two DN?” ---We tested with 1 namenode and 4 datanode, and encountered this problem. We tried to narrow it down, so that tried with 1 NN and 1 DN.
From: Marcos Ortiz [mailto:mlor...@uci.cu] Sent: Tuesday, May 31, 2011 11:46 AM To: hdfs-user@hadoop.apache.org Cc: Xu, Richard [ICG-IT] Subject: Re: Unable to start hadoop-0.20.2 but able to start hadoop-0.20.203 cluster On 05/31/2011 10:06 AM, Xu, Richard wrote: 1 namenode, 1 datanode. Dfs.replication=3. We also tried 0, 1, 2, same result. From: Yaozhen Pan [mailto:itzhak....@gmail.com] Sent: Tuesday, May 31, 2011 10:34 AM To: hdfs-user@hadoop.apache.org<mailto:hdfs-user@hadoop.apache.org> Subject: Re: Unable to start hadoop-0.20.2 but able to start hadoop-0.20.203 cluster How many datanodes are in your cluster? and what is the value of "dfs.replication" in hdfs-site.xml (if not specified, default value is 3)? From the error log, it seems there are not enough datanodes to replicate the files in hdfs. 在 2011 5 31 22:23，"Harsh J" <ha...@cloudera.com<mailto:ha...@cloudera.com>>写道： Xu, Please post the output of `hadoop dfsadmin -report` and attach the tail of a started DN's log? On Tue, May 31, 2011 at 7:44 PM, Xu, Richard <richard...@citi.com<mailto:richard...@citi.com>> wrote: > 2. Also, Configured Cap... This might easily be the cause. I'm not sure if its a Solaris thing that can lead to this though. > 3. in datanode server, no error in logs, but tasktracker logs has the > following suspicious thing:... I don't see any suspicious log message in what you'd posted. Anyhow, the TT does not matter here. -- Harsh J Regards, Xu When you installed on Solaris: - Did you syncronize the ntp server on all nodes: echo "server youservernetp.com" > /etc/inet/ntp.conf svcadm enable svc:/network/ntp:default - Are you using the same Java version on both systems (Ubuntu and Solaris)? - Can you test with one NN and two DN? -- Marcos Luis Ortiz Valmaseda Software Engineer (Distributed Systems) http://uncubanitolinuxero.blogspot.com
