Yes, I have secondary NM, but without HA, but after I killed NM and secondary NM, the startup time was still too long(4 hours), what else should I do? Will "hadoop dfsadmin -saveNamespace" resolve the issue?
Thanks for your help. On Wed, Jul 23, 2014 at 10:58 PM, Stanley Shi <[email protected]> wrote: > Do you have a secondary namenode running? Secondary NN is used for this > purpose; > Also, if you have HDFS HA enabled, this problem will also not occur. > > Regards, > *Stanley Shi,* > > > > On Tue, Jul 22, 2014 at 7:24 AM, Anfernee Xu <[email protected]> > wrote: > >> Hi, >> >> For some reason, all PIDs file are missing in my cluster, I have to >> manually kill all java processes on all machines, then I restarted the >> HDFS, but it took so long time in applying changes in edit log file, so my >> question is how can I reduce the delay? My understanding is as follows, >> could someone please give some comments on it? >> >> hadoop dfsadmin -safemode enter >> >> #save current in-mem data to image file and reset edit log >> hadoop dfsadmin -saveNamespace >> >> >> -- >> --Anfernee >> > > -- --Anfernee
