JVM BUG(s) - Hadoop's threads hanging

[Ronald Klop]

On Wed, 18 Jun 2014 17:10:08 +0200, Dmitry Sivachenko  
<trtrmitya at gmail.com> wrote:

>
> On 17 июня 2014 г., at 14:04, Dmitry Sivachenko <trtrmitya at gmail.com>  
> wrote:
>
>>
>> On 16 июня 2014 г., at 18:45, Ronald Klop <ronald-lists at klop.ws> wrote:
>>
>>>
>>> Hi,
>>>
>>> From your information it is hard to say something about it. The bug  
>>> can be in FreeBSD, OpenJDK (the Oracle part or in the BSD port part),  
>>> in Hadoop or in your own code running on top of Hadoop.
>>>
>>> My first idea would be to eliminate some of the possibilities.
>>> - Run a Linux machine with the same versions of the software.
>>> - Try FreeBSD 9-stable.
>>
>> I will try at least FreeBSD-9 soon (never used Linux so it will take  
>> more time and not so relevant because I want to continue to use  
>> FreeBSD, not just move to Linux)
>>
>
>
> Okay, I setup a similar configuration based on FreeBSD-9/stable.
>
> I see the same problems with both openjdk6 and openjdk7 described in my  
> previous e-mail.


Mmm, that makes it more though to solve. It would still be nice to know if  
running Hadoop on another OS has the same problem. That gives a pointer  
where to look.
And it would be nice to reduce your setup to a reproducible testcase, so  
people can replay it. Otherwise it is just a lot of guessing from my side  
what is happening internally in the application. I don't know how easy it  
is to create that.
Any news on the mailing-lists of Hadoop?

Regards,
Ronald.