Thanks for flagging this Ahmed. urandom is a perfectly acceptable option. I am not sure who maintains the pre-commit machines these days.
> On Jan 14, 2020, at 10:42 AM, Ahmed Hussein <a...@ahussein.me> wrote: > > Hi, > > I was investigating a JUnit test > (MAPREDUCE-7079:TestMRIntermediateDataEncryption > is failing in precommit builds > <https://issues.apache.org/jira/browse/MAPREDUCE-7079>) that was > consistently hanging on Linux VMs and failing Mapreduce pre-builds. > I found that the test hangs slows or hangs indefinitely whenever Java reads > the random file. > > I explored two different ways to get that test case to work properly on my > local Linux VM running rel7: > > 1. To install "haveged" and "rng-tools" on the virtual machine running > Rel7. Then, start rngd service {{sudo service rngd start}} . > 2. Change java configuration to load urandom > {{sudo vim $JAVA_HOME/jre/lib/security/java.security}} > ## Change the line “securerandom.source=file:/dev/random” to read: > securerandom.source=file:/dev/./urandom > > > Is it possible to apply any of the above solutions to the VM that runs the > precommit builds? --------------------------------------------------------------------- To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-dev-h...@hadoop.apache.org
