Re: Data in File-channel data folder

[Hari Shreedharan <hs...@cloudera.com>]

The File Channel deletes the files from which all events have been removed at the time of a checkpoint. But, the channel will keep 2 log files per data directory even if all its events are taken out. Once all events from log-1, log-2 are taken out and then events get written to log-3, log-1 will be deleted at the next checkpoint. Unless a log-3 is created, both log-1 and log-2 will not be deleted. 



Hari 

-- 
Hari Shreedharan


On Thursday, April 11, 2013 at 12:13 PM, Madhu Gmail wrote:

> Hello,
> 
> I have not heard from anyone. so just want make sure I have explained the issue correctly.
> 
> I think this is a common problem for everyone who uses it flume.
> 
> when flume sink consumes the log event from file channel, what will happen to the data that is committed to local disk under data directory.
> 
> will it grow indefinitely like log-1, log-2, log-3.....and so on ???
> 
> do I have to write script to remove the data from data directory ??
> 
> 
> 
> Madhu Munagala
> (214)679-2872
> 
> On Apr 11, 2013, at 11:52 AM, Madhu Gmail <madhu.munagala@gmail.com (mailto:madhu.munagala@gmail.com)> wrote:
> 
> > Hello,
> > 
> > How to clean up the data in file channel data folder. After the log events are processed by the sink, I still see the log-1 and log-2 shows 1.6GB and 1.2GB.
> > 
> > once the log events are processed by the sink, the channel should not have any data in data directory under file-channel ....??
> > 
> > 
> > Madhu Munagala
> > (214)679-2872
> > 
> 
> 
> 

Re: Data in File-channel data folder

[Madhu Gmail <ma...@gmail.com>]

Thank you Hari.

This is very useful information.

Let me try that scenario where I will send more data to create log-3.

Thanks

Madhu  Munagala


On Apr 11, 2013, at 2:57 PM, Hari Shreedharan <hs...@cloudera.com> wrote:

> The File Channel deletes the files from which all events have been removed at the time of a checkpoint. But, the channel will keep 2 log files per data directory even if all its events are taken out. Once all events from log-1, log-2 are taken out and then events get written to log-3, log-1 will be deleted at the next checkpoint. Unless a log-3 is created, both log-1 and log-2 will not be deleted.
> 
> 
> 
> Hari
> 
> -- 
> Hari Shreedharan
> 
> On Thursday, April 11, 2013 at 12:13 PM, Madhu Gmail wrote:
> 
>> Hello,
>> 
>> I have not heard from anyone. so just want make sure I have explained the issue correctly.
>> 
>> I think this is a common problem for everyone who uses it flume.
>> 
>> when flume sink consumes the log event from file channel, what will happen to the data that is committed to local disk under data directory.
>> 
>> will it grow indefinitely like log-1, log-2, log-3.....and so on ???
>> 
>> do I have to write script to remove the data from data directory ??
>> 
>> 
>> 
>> Madhu Munagala
>> (214)679-2872
>> 
>> On Apr 11, 2013, at 11:52 AM, Madhu Gmail <ma...@gmail.com> wrote:
>> 
>>> Hello,
>>> 
>>> How to clean up the data in file channel data folder. After the log events are processed by the sink, I still see the log-1 and log-2 shows 1.6GB and 1.2GB.
>>> 
>>> once the log events are processed by the sink, the channel should not have any data in data directory under file-channel ....??
>>> 
>>> 
>>> Madhu Munagala
>>> (214)679-2872
>