Nice find Pat. I cant see a reason on why that should happen. Can we
just do a stack dump and compare?

thanks
mahadev

On Thu, Jul 28, 2011 at 1:54 PM, Patrick Hunt <ph...@apache.org> wrote:
> I tracked this down to a low ulimit setting on the particular jenkins
> host where this was failing (max processes).
>
> Specifically the following test was failing on trunk, but not on
> branch 3_3, which concerns me
>    ./src/java/test/org/apache/zookeeper/test/QuorumZxidSyncTest.java
>
> there haven't been any real changes to this test between versions, any
> insight into why the server is using more threads in trunk vs
> branch33?
>
> Patrick
>
> On Fri, Jul 22, 2011 at 10:58 AM, Patrick Hunt <ph...@apache.org> wrote:
>> I've never seen this before, but in my CI environment (sun jdk
>> 1.6.0_20) I'm seeing some intermittent failures such as the following.
>>
>> Has anyone added/modified tests for 3.4.0 that might be using more
>> threads/memory than previously? Creating ZK clients but not closing
>> them, etc...
>>
>> java.lang.OutOfMemoryError: unable to create new native thread
>>       at java.lang.Thread.start0(Native Method)
>>       at java.lang.Thread.start(Thread.java:597)
>>       at 
>> org.apache.zookeeper.server.NIOServerCnxnFactory.start(NIOServerCnxnFactory.java:114)
>>       at 
>> org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:406)
>>       at 
>> org.apache.zookeeper.test.QuorumBase.startServers(QuorumBase.java:186)
>>       at org.apache.zookeeper.test.QuorumBase.setUp(QuorumBase.java:103)
>>       at org.apache.zookeeper.test.QuorumBase.setUp(QuorumBase.java:67)
>>       at 
>> org.apache.zookeeper.test.QuorumZxidSyncTest.setUp(QuorumZxidSyncTest.java:39)
>>
>> Patrick
>>
>

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