I attached a patch to FLUME-1870. Can you guys give it a try and see if you are 
hitting the issue now?  


Hari  

--  
Hari Shreedharan


On Wednesday, January 23, 2013 at 1:38 PM, Hari Shreedharan wrote:

> Looks like this is happening because for certain metrics which cannot be 
> converted into float (for example strings), we are sending the type as float, 
> causing Ganglia to log those messages. I think it should be fairly easy to 
> write a patch to fix this. I filed FLUME-1870 to track this.  
>  
>  
> Thanks,
> Hari
>  
> --  
> Hari Shreedharan
>  
>  
> On Wednesday, January 23, 2013 at 1:23 PM, Mike Percy wrote:
>  
> > Not sure when or how it broke, as I know of people using it in production. 
> > There is a way to configure it for different versions of Ganglia, like 3.0, 
> > 3.1. Might be worth trying both values to see if it's a problem with one or 
> > the other: http://flume.apache.org/FlumeUserGuide.html#ganglia-reporting
> >  
> >  
> > On Wed, Jan 23, 2013 at 1:12 PM, Connor Woodson <[email protected] 
> > (mailto:[email protected])> wrote:
> > > I have not had success with Ganglia, due to the same issue I think as 
> > > you've encountered.
> > >  
> > > - Connor
> > >  
> > >  
> > > On Wed, Jan 23, 2013 at 6:04 AM, Christian Schroer 
> > > <[email protected] (mailto:[email protected])> wrote:
> > > > Hi,
> > > >  
> > > > i have the same problem here, using Flume-NG 1.2 from CDH4.1.2.
> > > > I deleted all related RRDs, gmetad recreates them and i see those 
> > > > errors again.
> > > >  
> > > > Disk space, inodes, ... are fine. All RRDs not related to Flume-NG are 
> > > > fine, too.
> > > >  
> > > > These errors result in a gmetad crash after while (more metrics => 
> > > > earlier crash). If I disable ganglia support gmetad runs without any 
> > > > problem.
> > > >  
> > > > Regards
> > > > Christian
> > > >  
> > > > -----Ursprüngliche Nachricht-----
> > > > Von: Alexander Alten-Lorenz [mailto:[email protected]]
> > > > Gesendet: Mittwoch, 12. Dezember 2012 15:43
> > > > An: [email protected] (mailto:[email protected])
> > > > Betreff: Re: Setting up flume to use ganglia results in a lot of error 
> > > > messages in /var/log/messages
> > > >  
> > > > Looks like the RRD's are damaged, maybe the harddisk full?
> > > >  
> > > > - Alex
> > > >  
> > > > On Dec 12, 2012, at 11:38 AM, Juhani Connolly 
> > > > <[email protected] 
> > > > (mailto:[email protected])> wrote:
> > > >  
> > > > > We just noticed that ganglia's gmetad is spamming messages like the 
> > > > > following
> > > > >
> > > > > Dec  9 03:13:20 om-pat-obs01 /usr/sbin/gmetad[17407]: RRD_update 
> > > > > (/var/lib/ganglia/rrds/Flume 
> > > > > KDDI/blog-wap02/flume.SINK.avro2.Type.rrd): 
> > > > > /var/lib/ganglia/rrds/Flume 
> > > > > KDDI/blog-wap02/flume.SINK.avro2.Type.rrd: conversion of 'SINK' to 
> > > > > float not complete: tail 'SINK'
> > > > > Dec  9 03:13:20 om-pat-obs01 /usr/sbin/gmetad[17407]: RRD_update 
> > > > > (/var/lib/ganglia/rrds/Flume 
> > > > > KDDI/blog-wap02/flume.CHANNEL.ch1.Type.rrd): 
> > > > > /var/lib/ganglia/rrds/Flume 
> > > > > KDDI/blog-wap02/flume.CHANNEL.ch1.Type.rrd: conversion of 'CHANNEL' 
> > > > > to float not complete: tail 'CHANNEL'
> > > > > Dec  9 03:13:20 om-pat-obs01 /usr/sbin/gmetad[17407]: RRD_update 
> > > > > (/var/lib/ganglia/rrds/Flume 
> > > > > KDDI/blog-wap11/flume.SINK.avro1.Type.rrd): 
> > > > > /var/lib/ganglia/rrds/Flume 
> > > > > KDDI/blog-wap11/flume.SINK.avro1.Type.rrd: conversion of 'SINK' to 
> > > > > float not complete: tail 'SINK'
> > > > > Dec  9 03:13:20 om-pat-obs01 /usr/sbin/gmetad[17407]: RRD_update 
> > > > > (/var/lib/ganglia/rrds/Flume 
> > > > > KDDI/blog-wap11/flume.SOURCE.scribe.Type.rrd): 
> > > > > /var/lib/ganglia/rrds/Flume 
> > > > > KDDI/blog-wap11/flume.SOURCE.scribe.Type.rrd: conversion of 'SOURCE' 
> > > > > to float not complete: tail 'SOURCE'
> > > > >
> > > > > The counters are tracked fine on the web interface, but we've had 
> > > > > issues(gmetad crashing or not starting up, I'm still trying to get 
> > > > > specifics from the responsible people). I can't say for sure if this 
> > > > > is a ganglia problem or a problem with flumes ganglia support. Anyone 
> > > > > else feeding their counters to ganglia getting similar? Perhaps the 
> > > > > ganglia ml may be more appropriate, not sure on this one.
> > > >  
> > > > --
> > > > Alexander Alten-Lorenz
> > > > http://mapredit.blogspot.com
> > > > German Hadoop LinkedIn Group: http://goo.gl/N8pCF
> > > >  
> > >  
> >  
>  

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