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.

Looks like the RRD's are damaged, maybe the harddisk full?

- Alex

On Dec 12, 2012, at 11:38 AM, Juhani Connolly <[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

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]
> 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]
> 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]> 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
>
>