ulimit changed with Apache Jenkins upgrade?

[Patrick Hunt]

Hi Giri, can you check that the new hosts (H#) have the ulimit set to
what it was set to on the original hadoop# hosts? I'm seeing new test
failures with

     [exec]     [junit] java.io.FileNotFoundException:
/home/jenkins/jenkins-slave/workspace/PreCommit-ZOOKEEPER-Build/trunk/build/test/tmp/test7610638215300246179.junit.dir/version-2/log.100000001
(Too many open files)

which we've not seen before. I believe this means that we running out
of file descriptors?

Can you verify and address if possible?

Thanks,

Patrick