Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
Flume >> mail # user >> Why used space of flie channel buffer directory increase?


Copy link to this message
-
Re: Why used space of flie channel buffer directory increase?
HI,

I suspect tail -F and nc for filling up the directory. Whats inside of such a file which grows without a event?

My assumption:
nc is open one stream, and deliver over this stream all incoming events. Flume doesn't know that no event is coming in, since the stream never breaks up. I wondering if you could use syslog(-ng) for the event delivery?

Cheers,
 Alex

On Mar 20, 2013, at 2:30 AM, Zhiwen Sun <[EMAIL PROTECTED]> 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
> -rw-r--r-- 1 zhiwensun zhiwensun 29 2013-03-19 15:28 ./file-channel/data/log-7.meta
> -rw-r--r-- 1 zhiwensun zhiwensun 0 2013-03-19 09:15 ./file-channel/data/in_use.lock
> -rw-r--r-- 1 zhiwensun zhiwensun 1.0M 2013-03-19 10:11 ./file-channel/data/log-6
>
>
>
>
>
> Zhiwen Sun
>
>
>
> On Wed, Mar 20, 2013 at 2:32 AM, Hari Shreedharan <[EMAIL PROTECTED]> wrote:

Alexander Alten-Lorenz
http://mapredit.blogspot.com
German Hadoop LinkedIn Group: http://goo.gl/N8pCF