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From Willem Jiang <willem.ji...@gmail.com>
Subject Re: Twitter + Aggregation: Out of Memory errors
Date Fri, 07 Nov 2014 06:42:55 GMT
We just added the multiPartUpload option in camel-aws-s3 component, it can some memory consumption.
Please check out the latest Camel 2.15-SNAPSHOT for verification.

--  
Willem Jiang

Red Hat, Inc.
Web: http://www.redhat.com
Blog: http://willemjiang.blogspot.com (English)
http://jnn.iteye.com (Chinese)
Twitter: willemjiang  
Weibo: 姜宁willem



On October 14, 2014 at 11:21:43 PM, Andreas C. Osowski (andreas.chr.osowski@gmail.com) wrote:
> Thanks, I did that eventually... although it did not solve the issue. Turns
> out that camel-aws forcibly converts the Exchange body to an InputStream.
> Camel's File->InputStream converter buffers the InputStream so things still
> fail.
>  
> I've attached a patch that fixes this by having the AWS SDK handle the
> InputStream in a non-buffered way, however this causes one test
> ("sendFileAndKeep") to fail. I'm assuming this might be because the patch
> prevents conversion of the Exchange body to an InputStream?
>  
> Do you want me to create a bug for this or is this intended behaviour?
>  
>  
>  
> On Tue, Oct 14, 2014 at 2:58 PM, Willem Jiang  
> wrote:
>  
> > You can just store the file into the message body, just as you did with
> > the String objects.
> >
> >
> > --
> > Willem Jiang
> >
> > Red Hat, Inc.
> > Web: http://www.redhat.com
> > Blog: http://willemjiang.blogspot.com (English)
> > http://jnn.iteye.com (Chinese)
> > Twitter: willemjiang
> > Weibo: 姜宁willem
> >
> >
> >
> > On October 14, 2014 at 4:09:39 PM, Andreas C. Osowski (
> > andreas.chr.osowski@gmail.com) wrote:
> > > Thanks for the reply. I also came to that conclusion eventually. However,
> > > could you explain to me more how I'd store each batch in a file?
> > > It is my understanding so far that the Aggregator is called whenever the
> > > input emits a new exchange. If I were to store the messages in a file,
> > > how'd I know inside the aggregator that the current batch is complete?
> > > After all, I can hardly continue writing messages to the file while
> > aws-s3
> > > is pushing the same to s3
> > > On 14 Oct 2014 09:08, "Willem Jiang" wrote:
> > >
> > > > I just found the code.
> > > >
> > > > class JsonBodyAppender {
> > > > def append(existing: String, next: String) = existing + "\n" + next
> > > > }
> > > >
> > > > There are too many String there, maybe you can just append the message
> > > > into a file.
> > > >
> > > > --
> > > > Willem Jiang
> > > >
> > > > Red Hat, Inc.
> > > > Web: http://www.redhat.com
> > > > Blog: http://willemjiang.blogspot.com (English)
> > > > http://jnn.iteye.com (Chinese)
> > > > Twitter: willemjiang
> > > > Weibo: 姜宁willem
> > > >
> > > >
> > > >
> > > > On October 14, 2014 at 2:32:00 PM, Willem Jiang (
> > willem.jiang@gmail.com)
> > > > wrote:
> > > > > Can you show us how did you do the aggregation? Just some code
> > snippet
> > > > is OK.
> > > > >
> > > > > BTW, you can always using write the stream into to file to avoid
load
> > > > the whole message
> > > > > into memory.
> > > > >
> > > > > --
> > > > > Willem Jiang
> > > > >
> > > > > Red Hat, Inc.
> > > > > Web: http://www.redhat.com
> > > > > Blog: http://willemjiang.blogspot.com (English)
> > > > > http://jnn.iteye.com (Chinese)
> > > > > Twitter: willemjiang
> > > > > Weibo: 姜宁willem
> > > > >
> > > > >
> > > > >
> > > > > On October 14, 2014 at 5:23:21 AM, Andreas C. Osowski (
> > > > andreas.chr.osowski@gmail.com)
> > > > > wrote:
> > > > > > Hey there.
> > > > > > I'm running into "OOM: Java heap space" exceptions trying to
> > aggregate
> > > > > > twitter messages before pushing them to s3. (Xmx/Xms = 1.5g;
> > there's
> > > > > > definitely sufficient free memory available when the exceptions
> > happen)
> > > > > > I've also tried to use camel-leveldb as the AggregationRepository
> > but
> > > > > > without luck. Smaller batch sizes (i.e. 100) work just fine...
5000
> > > > > > aggregated messages should also take up just 60mb-ish (assuming
an
> > > > average
> > > > > > of 3000chars per message).
> > > > > >
> > > > > > The relevant code can be found here:
> > > > > > https://gist.github.com/th0br0/a1484ea1ad18b8b20c25
> > > > > >
> > > > > > Could somebody point me to what I'm doing wrong?
> > > > > >
> > > > > > Thanks a lot!
> > > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> >
> >
>  


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