I tried setting JVM option "-Djava.security.egd=file:///dev/./urandom" from the command line but it did not work for me. In my case, I assume the JVM ignores "java.security.egd" because it is considered a security thing.
On Tue, Jan 14, 2020 at 1:27 PM István Fajth <fapi...@gmail.com> wrote: > Hi, > > based on this article, we might not need infra to do this, but we can > specify the /dev/urandom as a random source directly to the JVM for test > runs with the option: -Djava.security.egd=file:///dev/urandom. > > https://security.stackexchange.com/questions/14386/what-do-i-need-to-configure-to-make-sure-my-software-uses-dev-urandom > > Pifta > > Sean Busbey <bus...@cloudera.com.invalid> ezt írta (időpont: 2020. jan. > 14., K, 20:14): > >> You should file an INFRA jira asking about this. They can get in touch >> with the folks who maintain the Hadoop labeled nodes. >> >> On Tue, Jan 14, 2020 at 12:42 PM 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? >> >> >> >> -- >> busbey >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org >> For additional commands, e-mail: common-dev-h...@hadoop.apache.org >> >> > > -- > Pifta >
