Mailing-List: contact dev-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@lucene.apache.org
Received-SPF: neutral (nike.apache.org: local policy)
MIME-Version: 1.0
In-Reply-To: 
 <CAOdYfZVyCyFffR2jXLrGZMVZ770wVkhTW8zkkn5CK+fJ+U=TPg@mail.gmail.com>
References: <930959354.1153.1338490483270.JavaMail.hudson@aegis.apache.org>
 <CAL8PwkZoFXi+bWEDTvRGn1ro=fX4=+Mbb36EptZkSCXbDiyWeA@mail.gmail.com>
 <CAM21Rt_Drwx8=coyjKbGz35VREXJN-m1KvgBa6jwKKkVPsoQCw@mail.gmail.com>
 <CAL8PwkbyAFRi_EgnToTkQZq4JyfQsrxFoK4GMMETxCXBMg25=g@mail.gmail.com>
 <CAOdYfZVyCyFffR2jXLrGZMVZ770wVkhTW8zkkn5CK+fJ+U=TPg@mail.gmail.com>
From: Michael McCandless <lucene@mikemccandless.com>
Date: Fri, 1 Jun 2012 06:35:53 -0400
Message-ID: 
 <CAL8Pwkb3eEDw91=u__N9xsUC4aYHuLCh6JnTMnXitYASUpo8bg@mail.gmail.com>
Subject: Re: [JENKINS] Lucene-Solr-tests-only-trunk-java7 - Build # 2723 -
 Failure
To: dev@lucene.apache.org
Content-Type: text/plain; charset=ISO-8859-1

On Thu, May 31, 2012 at 8:05 PM, Robert Muir <rcmuir@gmail.com> wrote:
> On Thu, May 31, 2012 at 5:51 PM, Michael McCandless
> <lucene@mikemccandless.com> wrote:
>> I think the best option is to ignore the OOME from this test case...?
>>
>> Mike McCandless
>>
>
> I think thats fine for now, but I'm not convinced there is no problem
> at all. However, its not obvious the problem is us, either.
>
> Its easy to see this OOM is related to G1 garbage collector.
>
> This test has failed 3 times in the past couple days (before it never
> failed: i suspect packed ints changes sent it over the edge).
>
> https://builds.apache.org/job/Lucene-Solr-tests-only-trunk-java7/2707/
> https://builds.apache.org/job/Lucene-Solr-tests-only-trunk-java7/2719/
> https://builds.apache.org/job/Lucene-Solr-tests-only-trunk-java7/2723/
>
> All 3 cases are java 7, and all 3 cases uses -XX:+UseG1GC. (Uwe turned
> on GC randomization at lucene revolution)

Aha!  Nice sleuthing :)

So maybe this means G1 isn't as good when heap is limited...

Can we somehow detect / pass property to the JVM when G1 is in use?
Then we can scope down the "ignore OOME" I committed to only when G1
is in use...

Mike McCandless

http://blog.mikemccandless.com

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org