Hey, Every thing comes up for good. Why this delay of 6 minutes I wonder? And I see that this delay has nothing to do with the accidental switch-off. Do I need to edit my conf? I am using the machine-name assigned to this machine for its entry in conf/slaves file. and host command also confirms that name-ip pair is working good.
Thanks, Himanshu On Wed, May 4, 2011 at 12:59 PM, Harsh J <ha...@cloudera.com> wrote: > Hello, > > On Thu, May 5, 2011 at 12:04 AM, Himanshu Vashishtha <hv.cs...@gmail.com> > wrote: > > Hello all, > > I was running HDFS in standalone mode where the machine got accidently > > turned off. On resuming it back to normal, I got this exception: > > =================================================== > > 2011-05-04 11:27:54,441 INFO org.apache.hadoop.ipc.Server: IPC Server > > handler 9 on 54310: starting > > 2011-05-04 11:27:54,470 INFO org.apache.hadoop.ipc.Server: Error register > > getProtocolVersion > > java.lang.IllegalArgumentException: Duplicate > metricsName:getProtocolVersion > > at > > > org.apache.hadoop.metrics.util.MetricsRegistry.add(MetricsRegistry.java:53) > > at > > > org.apache.hadoop.metrics.util.MetricsTimeVaryingRate.<init>(MetricsTimeVaryingRate.java:89) > > at > > > org.apache.hadoop.metrics.util.MetricsTimeVaryingRate.<init>(MetricsTimeVaryingRate.java:99) > > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:523) > > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:961) > > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:957) > > at java.security.AccessController.doPrivileged(Native Method) > > at javax.security.auth.Subject.doAs(Subject.java:396) > > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:955) > > > > Is something not working with your Hadoop cluster? It would seem that > your NN came back up just fine, which is a good thing (it is just > waiting now for the DNs to come back, as per the remaining part of the > log -- ensure that all DNs are up as well). > > The logged exception is an INFO level one about something trying to > add a dupe metric name. It should be investigated (has cropped up for > many before), but it is pretty harmless I'd think. > > -- > Harsh J >
