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
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:
Yes saveNamespace as you described will checkpoint the FsImage and reset your edits log so it will reduce startup time. On Thu, Jul 24, 2014 at 8:25 AM, Anfernee Xu <[EMAIL PROTECTED]> wrote: CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use of the individual or entity to which it is addressed and may contain information that is confidential, privileged and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any printing, copying, dissemination, distribution, disclosure or forwarding of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and delete it from your system. Thank You.
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