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From Ying Tang <ivytang0...@gmail.com>
Subject Re: chukwa agent doesn't collect the log suddenly , and after several days ,the agent crashes.
Date Wed, 27 Jul 2011 05:52:39 GMT
Does this mean the adaptor still transfer the previous log ? The current log
is missing?

On Wed, Jul 27, 2011 at 1:08 PM, Eric Yang <eric818@gmail.com> wrote:

> This looks like a bug, the last number should be in sync with the
> current file's size, but the UTF adaptor is still tailing the previous
> file (which rotated at 10487067)
> It means there is a bug in handling the file rotation, but the adaptor
> did not pick up the change.
>
> Please open a jira.  Thanks
>
> regards,
> Eric
>
> On Tue, Jul 26, 2011 at 8:05 PM, Ying Tang <ivytang0812@gmail.com> wrote:
> > The log didn't rotate very  rapidly.
> >
> > Now i can't rebuild the scenario . But when the chukwa agent log looks
> ok,
> >
> >  2011-07-27 10:57:38,967 INFO Timer-0 ChukwaAgent - writing checkpoint
> > 1307083
> > 2011-07-27 10:57:42,571 INFO HTTP post thread ChukwaHttpSender -
> collected 1
> > chunks for post_745
> > 2011-07-27 10:57:42,571 INFO HTTP post thread ChukwaHttpSender - >>>>>>
> HTTP
> > post_745 to http://chukwacollector1.xingcloud.com:9095/ length = 1837
> > 2011-07-27 10:57:42,574 INFO HTTP post thread ChukwaHttpSender - >>>>>>
> HTTP
> > Got success back from http://chukwacollector1.xingcloud.com:9095/chukwa;
> > response length 43
> > 2011-07-27 10:57:42,574 INFO HTTP post thread ChukwaHttpSender - post_745
> > sent 0 chunks, got back 1 acks
> >
> > The list in telnet agent 9093 is:
> > adaptor_2963225a90653a309cf779d4a1d815a3)
> >
> org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.CharFileTailingAdaptorUTF8
> > Gamelog 0 /var/log/gamelog 10487067
> > After several minites ,  the list is still
> > adaptor_2963225a90653a309cf779d4a1d815a3)
> >
> org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.CharFileTailingAdaptorUTF8
> > Gamelog 0 /var/log/gamelog 10487067
> >
> > Is the 10487067 the offset number ?The number didn't changed , and the
> log
> > file's size is from 0 to 10M .And now the log file's size is 1150872.
> >
> > On Wed, Jul 27, 2011 at 12:26 AM, Eric Yang <eric818@gmail.com> wrote:
> >>
> >> CharFileTailingAdaptorUTF should handle log rotation gracefully.  Is the
> >> log rotating rapidly?
> >> Run those command on chukwa agent:
> >> telnet localhost 9093
> >> list
> >> This should show a list of tailing files, and check the offset number of
> >> the tailing log file.  The most right number should be smaller than the
> size
> >> of your log file.  If it is bigger and not changing, it is most likely
> there
> >> is a bug that we haven't seen before.  It might be useful to turn on
> debug
> >> on chukwa agent and see if this can be reproduced to nail down the root
> >> cause.  Thanks
> >> regards,
> >> Eric
> >> On Jul 26, 2011, at 6:13 AM, Ying Tang wrote:
> >>
> >> Is there the possibility that
> >> when the log file reaches the log4g config file size ,the log4j will
> >> rename this log file and create a new file with this name as the log
> file .
> >> At the time ,the chukwa adaptor doesn't tail the log properly , and this
> >> cause the chuwa agent can't collector the log any more.
> >>
> >> On Tue, Jul 26, 2011 at 2:07 PM, Ying Tang <ivytang0812@gmail.com>
> wrote:
> >>>
> >>> The log file is log4j log file ,and the size is 10M ,the maxbackupindex
> >>> is 1.
> >>>
> >>>
> >>> On Tue, Jul 26, 2011 at 1:42 PM, Eric Yang <eric818@gmail.com> wrote:
> >>>>
> >>>> Can you run "ls -l" to show the size and dateof the log files that you
> >>>> are streaming?
> >>>>
> >>>> regards,
> >>>> Eric
> >>>>
> >>>> On Mon, Jul 25, 2011 at 7:36 PM, Ying Tang <ivytang0812@gmail.com>
> >>>> wrote:
> >>>> > The chukwa version is 0.4.0 and the adaptor is
> >>>> >
> >>>> >
> org.apache.hadoop.chukwa.datacollection.adaptor.filetailer.CharFileTailingAdaptorUTF8
> >>>> >
> >>>> > On Mon, Jul 25, 2011 at 11:50 PM, Eric Yang <eric818@gmail.com>
> wrote:
> >>>> >>
> >>>> >> Hi Ivy,
> >>>> >>
> >>>> >> When data is send from agent to collector, collector send
> >>>> >> acknowledgment
> >>>> >> of receiving of the chunks.  At 00:03:28, there are 5 chunks
> >>>> >> acknowledged.
> >>>> >>  This means communication between collector and agent are working
> at
> >>>> >> that
> >>>> >> point in time.  However, there is no activity after 00:04:28.
 This
> >>>> >> looks
> >>>> >> like adaptor did not handle the log rotation properly at close
to
> >>>> >> midnight.
> >>>> >>  Which version of Chukwa are you using and which adaptor are
you
> >>>> >> using?
> >>>> >>
> >>>> >> regards,
> >>>> >> Eric
> >>>> >>
> >>>> >> On Jul 25, 2011, at 12:40 AM, Ying Tang wrote:
> >>>> >>
> >>>> >> > Hi all,
> >>>> >> >
> >>>> >> > In my cluster , i have two chukwa agent and one collector
.
> >>>> >> > At a time ,  both chukwa agents's log :
> >>>> >> > 2011-07-18 00:03:28,688 INFO Timer-1 HttpConnector - #
http
> chunks
> >>>> >> > ACK'ed since last report: 5
> >>>> >> > 2011-07-18 00:04:28,697 INFO Timer-1 HttpConnector - #
http
> chunks
> >>>> >> > ACK'ed since last report: 0
> >>>> >> > 2011-07-18 00:05:28,706 INFO Timer-1 HttpConnector - #
http
> chunks
> >>>> >> > ACK'ed since last report: 0
> >>>> >> > 2011-07-18 00:06:28,714 INFO Timer-1 HttpConnector - #
http
> chunks
> >>>> >> > ACK'ed since last report: 0
> >>>> >> > 2011-07-18 00:07:29,340 INFO Timer-1 HttpConnector - #
http
> chunks
> >>>> >> > ACK'ed since last report: 0
> >>>> >> >
> >>>> >> > And the collector
> >>>> >> > 2011-07-17 11:02:32,155 INFO Timer-3 SeqFileWriter -
> >>>> >> > stat:datacollection.writer.hdfs dataSize=0 dataRate=0
> >>>> >> > 2011-07-17 11:02:43,074 INFO Timer-1 root -
> >>>> >> > stats:ServletCollector,numberHTTPConnection:0,numberchunks:0
> >>>> >> > 2011-07-17 11:03:02,162 INFO Timer-3 SeqFileWriter -
> >>>> >> > stat:datacollection.writer.hdfs dataSize=0 dataRate=0
> >>>> >> > 2011-07-17 11:03:32,168 INFO Timer-3 SeqFileWriter -
> >>>> >> > stat:datacollection.writer.hdfs dataSize=0 dataRate=0
> >>>> >> > 2011-07-17 11:03:43,085 INFO Timer-1 root -
> >>>> >> > stats:ServletCollector,numberHTTPConnection:0,numberchunks:0
> >>>> >> > 2011-07-17 11:04:02,174 INFO Timer-3 SeqFileWriter -
> >>>> >> > stat:datacollection.writer.hdfs dataSize=0 dataRate=0
> >>>> >> > 2011-07-17 11:04:32,180 INFO Timer-3 SeqFileWriter -
> >>>> >> > stat:datacollection.writer.hdfs dataSize=0 dataRate=0
> >>>> >> > 2011-07-17 11:04:43,096 INFO Timer-1 root -
> >>>> >> > stats:ServletCollector,numberHTTPConnection:0,numberchunks:0
> >>>> >> > 2011-07-17 11:05:02,185 INFO Timer-3 SeqFileWriter -
> >>>> >> > stat:datacollection.writer.hdfs dataSize=0 dataRate=0
> >>>> >> >
> >>>> >> > (the collector and agent has  different  timezone)
> >>>> >> > And the collector didn't collect any log.
> >>>> >> >
> >>>> >> >
> >>>> >> > What dons the "http chunks ACK'ed since last report: 0"
means?
> >>>> >> > And from this log "http chunks ACK'ed since last report:
0"
> appears
> >>>> >> > to
> >>>> >> >  agent crash, the chukwa port still on , but after several
days,
> >>>> >> > both agents
> >>>> >> > crashed without exceptions.
> >>>> >> >
> >>>> >> >
> >>>> >> > --
> >>>> >> > Best regards,
> >>>> >> >
> >>>> >> > Ivy Tang
> >>>> >> >
> >>>> >> >
> >>>> >> >
> >>>> >>
> >>>> >
> >>>> >
> >>>> >
> >>>> > --
> >>>> > Best regards,
> >>>> > Ivy Tang
> >>>> >
> >>>> >
> >>>> >
> >>>
> >>>
> >>>
> >>> --
> >>> Best regards,
> >>> Ivy Tang
> >>>
> >>>
> >>
> >>
> >>
> >> --
> >> Best regards,
> >> Ivy Tang
> >>
> >>
> >>
> >
> >
> >
> > --
> > Best regards,
> > Ivy Tang
> >
> >
> >
>



-- 
Best regards,

Ivy Tang

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