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Flume, mail # user - Why used space of flie channel buffer directory increase?


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Zhiwen Sun 2013-03-19, 08:19
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Kenison, Matt 2013-03-19, 16:27
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Alexander Alten-Lorenz 2013-03-19, 17:32
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Hari Shreedharan 2013-03-19, 18:32
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Zhiwen Sun 2013-03-20, 01:30
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Alexander Alten-Lorenz 2013-03-20, 07:11
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Zhiwen Sun 2013-03-20, 07:15
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Hari Shreedharan 2013-03-20, 07:23
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Re: Why used space of flie channel buffer directory increase?
Zhiwen Sun 2013-03-20, 07:50
Hi Hari:

Is that means I can reduce the capacity of file channel to cut down max
disk space used by file channel?
Zhiwen Sun

On Wed, Mar 20, 2013 at 3:23 PM, Hari Shreedharan <[EMAIL PROTECTED]
> wrote:

>  Hi,
>
> Like I mentioned earlier, we will always keep 2 data files in each data
> directory (the ".meta" files are metadata associated to the actual data).
> Once a log-8 is created(when log-7 gets rotated when it hits maximum size)
> and all of the events in log-6 are taken, then log-6 will get deleted, but
> you will still will see log-7 and log-8. So what you are seeing is not
> unexpected.
>
>
> Hari
>
> --
> Hari Shreedharan
>
> On Tuesday, March 19, 2013 at 6:30 PM, Zhiwen Sun wrote:
>
> Thanks all for your reply.
>
> @Kenison
> I stop my tail -F | nc program and there is no new event file in HDFS, so
> I think there is no event arrive. To make sure, I will test again with
> enable JMX.
>
> @Alex
>
> The latest log is following. I can't see any exception or warning.
>
> 13/03/19 15:28:16 INFO hdfs.BucketWriter: Renaming hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490901.tmp to hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490901
> 13/03/19 15:28:16 INFO hdfs.BucketWriter: Creating hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490902.tmp
> 13/03/19 15:28:17 INFO file.EventQueueBackingStoreFile: Start checkpoint
> for /home/zhiwensun/.flume/file-channel/checkpoint/checkpoint, elements to
> sync = 3
> 13/03/19 15:28:17 INFO file.EventQueueBackingStoreFile: Updating
> checkpoint metadata: logWriteOrderID: 1363659953997, queueSize: 0,
> queueHead: 362981
> 13/03/19 15:28:17 INFO file.LogFileV3: Updating log-7.meta currentPosition
> = 216278208, logWriteOrderID = 1363659953997
> 13/03/19 15:28:17 INFO file.Log: Updated checkpoint for file:
> /home/zhiwensun/.flume/file-channel/data/log-7 position: 216278208
> logWriteOrderID: 1363659953997
> 13/03/19 15:28:26 INFO hdfs.BucketWriter: Renaming hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490902.tmp to hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490902
> 13/03/19 15:28:27 INFO hdfs.BucketWriter: Creating hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490903.tmp
> 13/03/19 15:28:37 INFO hdfs.BucketWriter: Renaming hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490903.tmp to hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490903
> 13/03/19 15:28:37 INFO hdfs.BucketWriter: Creating hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490904.tmp
>
> 13/03/19 15:28:47 INFO file.EventQueueBackingStoreFile: Start checkpoint
> for /home/zhiwensun/.flume/file-channel/checkpoint/checkpoint, elements to
> sync = 2
> 13/03/19 15:28:47 INFO file.EventQueueBackingStoreFile: Updating
> checkpoint metadata: logWriteOrderID: 1363659954200, queueSize: 0,
> queueHead: 362981
> 13/03/19 15:28:47 INFO file.LogFileV3: Updating log-7.meta currentPosition
> = 216288815, logWriteOrderID = 1363659954200
> 13/03/19 15:28:47 INFO file.Log: Updated checkpoint for file:
> /home/zhiwensun/.flume/file-channel/data/log-7 position: 216288815
> logWriteOrderID: 1363659954200
> 13/03/19 15:28:48 INFO hdfs.BucketWriter: Renaming hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490904.tmp to hdfs://
> 127.0.0.1:9000/flume/events/2013-03-19/app.1363660490904
>
>
> @Hari
> em, 12 hours passed. The size of file channel directory has no reduce.
>
> Files in file channel directory:
>
> -rw-r--r-- 1 zhiwensun zhiwensun    0 2013-03-19 09:15 in_use.lock
> -rw-r--r-- 1 zhiwensun zhiwensun 1.0M 2013-03-19 10:11 log-6
> -rw-r--r-- 1 zhiwensun zhiwensun   29 2013-03-19 10:12 log-6.meta
> -rw-r--r-- 1 zhiwensun zhiwensun 207M 2013-03-19 15:28 log-7
> -rw-r--r-- 1 zhiwensun zhiwensun   29 2013-03-19 15:28 log-7.meta
> -rw-r--r-- 1 zhiwensun zhiwensun 207M 2013-03-19 15:28
> ./file-channel/data/log-7
> -rw-r--r-- 1 zhiwensun zhiwensun 29 2013-03-19 10:12
> ./file-channel/data/log-6.meta
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Hari Shreedharan 2013-03-20, 08:06
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Zhiwen Sun 2013-03-20, 09:20
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Kenison, Matt 2013-03-20, 17:21