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Hadoop >> mail # user >> Server log files, order of importance ?


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Jay Vyas 2011-10-31, 22:07
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Uma Maheswara Rao G 72686... 2011-10-31, 22:16
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Re: Server log files, order of importance ?
Thanks uma : I was looking for a more general list.  Is there a good
summary of various hadoop daemons and their logs online ?

On Mon, Oct 31, 2011 at 6:16 PM, Uma Maheswara Rao G 72686 <
[EMAIL PROTECTED]> wrote:

> If you want to trace one particular block associated with a file, you can
> first check the file Name and find the NameSystem.allocateBlock: from your
> NN logs.
>  here you can find the allocated blockID. After this, you just grep with
> this blockID from your huge logs. Take the time spamps for each operations
> based on this grep information. easily you can trace what happend to that
> block.
>
> Regards,
> Uma
> ----- Original Message -----
> From: Jay Vyas <[EMAIL PROTECTED]>
> Date: Tuesday, November 1, 2011 3:37 am
> Subject: Server log files, order of importance ?
> To: [EMAIL PROTECTED]
>
> > Hi guys :I wanted to go through each of the server logs on my hadoop
> > (single psuedo node) vm.
> >
> > In particular, I want to know where to look when things go wrong
> > (i.e. so I
> > can more effectively debug hadoop namenode issues in the future).
> >
> > Can someone suggest what the most important ones to start looking
> > at are ?
> >
> > --
> > Jay Vyas
> > MMSB/UCHC
> >
>

--
Jay Vyas
MMSB/UCHC
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB