FYI ..This is block of code ..... also I am using jclouds 1.7.1 (Stable
branch)
try {
String key = "objkey" + UUID.randomUUID();
Blob blob =
Example9.blobStore.blobBuilder(key).payload(Example9.file).build();
Example9.blobStore.putBlob(Example9.containerName+count,
blob);
Example9.blobStore.getBlob(Example9.containerName+count,
key);
Example9.blobStore.removeBlob(Example9.containerName+count,
key);
} catch (Exception ace) {
System.out.println("Request failed for objkey " + key + "
" + ace);
}
On Tue, Apr 22, 2014 at 8:32 AM, Sumit Gaur <[email protected]> wrote:
> Hi Shri,
> Thanks for paying attention to it, Please find my answers below:-
>
>
> On Tue, Apr 22, 2014 at 2:31 AM, Shrinand Javadekar <
> [email protected]> wrote:
>
>> Sumit,
>>
>> I realize that you had sent out a similar email sometime ago about
>> performance degradation. I'm not sure if anyone has run these types of
>> long running experiments with jclouds. So this may be a first.
>>
> Tried to debug it in last 2 weeks without success. Want to understand more
> how jclouds code handle this use case or any pointers that this is a
> problematic use case would help
>
>>
>> The 409 status is returned because of a conflict [1]. Are you sure you
>> didn't have two or more threads trying to delete the same object?
>>
> No two threads share the same object key in my programme (String key =
> "objkey" + UUID.randomUUID();). It is some kind of race between PUT and
> DEL call . If I put say 10 ms sleep between call then there is no 409 error.
>
>
>> Also, I see that that 409 is returned by Swift if you try to delete a
>> container that isn't empty[2]. Is that something your test code
>> could've tried?
>>
> I am trying to delete objects .. not containers.
>
>>
>> When you say there was a similar test you're trying with curl, are you
>> using the curl command-line utility or the libcurl library?
>
> curl command in shell script with for loops.
>
>
>> How are
>> you specifying the number of threads to use and what object each
>> thread should get/put/delete?
>>
>
> It is a java test programme using ThreadPoolExecutor. Somthing similiar as
> here
>
> http://www.javacodegeeks.com/2013/01/java-thread-pool-example-using-executors-and-threadpoolexecutor.html
>
> Object is a 5KB file. with key = "objkey" + UUID.randomUUID(); with Pool
> of 10 threads.
>
>
> Hope this would give a good inside. Let me know if you get any problem
> here.
>
>
>>
>> Thanks.
>> -Shri
>>
>> [1] http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
>> [2] https://bugs.launchpad.net/horizon/+bug/1096084
>>
>> On Sun, Apr 20, 2014 at 5:55 PM, Sumit Gaur <[email protected]> wrote:
>> > Hi
>> > I using jclouds lib integrated with Openstack Swift+ keystone
>> combinaiton.
>> > Things are working fine except stability test. After 20-30 hours of test
>> > jclouds/SWIFT start degrading in TPS and keep going down over the time.
>> >
>> > 1) I am running the (PUT-GET-DEL) cycle in 10 parallel threads.
>> > 2) I am getting a lot of 409 and DEL failure for the as response too
>> from
>> > SWIFT.
>> > 3) Direct similiar test from curl does not show much impact and TPS
>> remain
>> > constant.
>> >
>> > Can sombody help me wht is going wrong here ?
>> >
>> > Thanks
>> > sumit
>>
>
>
