+1 to that suggestion. Have run into that one so many times in the past
(can cause up to 30s delay in initial connections).
We can easily throw that into the surefire/failsafe plugin configs for
the future as well.
Eli Levine wrote:
Based on info in [1], using -Djava.net.preferIPv4Stack=true should speed
things up if issues are indeed related to IPV6. Maryanne, Julian, can you
try running Pig tests with the -Djava.net.preferIPv4Stack=true JVM param?
If that helps, maybe we could just add that parameter to pom.xml.
Alternatively, if Pig tests are slow for some people, I can certainly break
them out into unit and integration tests and only have integration tests
actually execute Pig. This seems like a less desirable option IMHO, as
integration tests are not run on 'mvn install.'
Thanks,
Eli
[1] https://developer.ibm.com/answers/questions/284205/how-
can-we-improve-performance-in-javanetinet6addr.html
On Mon, Mar 13, 2017 at 10:38 AM, Maryann Xue<[email protected]> wrote:
Here a Mac Pro with Comcast network connection (not much better than what
Julian has in a ski cabin maybe). Core build took 3:22 min, and Pig took
07:38 min.
On Mon, Mar 13, 2017 at 9:08 AM, Julian Hyde<[email protected]> wrote:
The env was a ski cabin. And as you know, ski cabins often have blunt
knives, poor quality coffee machines, and routers that don't support
ipV6.
The last of these might be a factor.
Julian
On Mar 11, 2017, at 7:14 PM, Eli Levine<[email protected]> wrote:
Not seeing this on my Linux or Mac machines. What env are you seeing
this in?
Thanks,
Eli
On Mar 11, 2017, at 8:14 AM, Julian Hyde<[email protected]> wrote:
The Pig tests seem to be running very slowly (several minutes), and
CPU
is idle. Is anyone else seeing this?
A thread dump reveals a wait in java/net/Inet6AddressImpl.
lookupAllHostAddr.
If so, maybe we’re hitting [1].
Julian
[1] https://developer.ibm.com/answers/questions/284205/how-
can-we-improve-performance-in-javanetinet6addr.html<
https://developer.ibm.com/answers/questions/284205/how-
can-we-improve-performance-in-javanetinet6addr.html>
