Does anyone use druid on openjdk? Is openjdk supported? I can't get
druid to work on openjdk without this fix. I'm a little concerned about
the production readiness of this product on openjdk. should I be?
I will get this PR submitted, but it's quite simple, I was hoping an
active druid developer would pick this up as an obvious need.
Tony
On 2019-11-01 13:47, Jad Naous wrote:
Hi Tony, thank you for doing this! It would be really helpful if you can
open a PR with the change so we can review it!
On Fri, Nov 1, 2019 at 9:50 AM Tony Schwartz <tonyschwa...@gmail.com> wrote:
Yes, I was able to build the project now with my recommended code change
and it works fine. Can someone please look into making this change? So
far, it's the only issue I've run into with OpenJDK.
Thank you,
Tony Schwartz
On Fri, Nov 1, 2019 at 11:34 AM Tony Schwartz <tonyschwa...@gmail.com>
wrote:
The app fails to hand off the segments to the "historical" coordinator (or
whatever it's called) so all my segments become immediately unavailable.
On the 2 versions of the latest OpenJDK (8 and 11) on which I've tried
this, I get the same issue. What I believe is happening can be fixed with a
code change to: DruidCoordinator.java @line 690. the instance inner
class CoordinatorHistoricalManagerRunnable has a constructor that is
referencing DruidCoordinator.this prior to the super(...) constructor being
invoked. This causes a failure. A work-around is to pass the coordinator
instance to the constructor:
CoordinatorHistoricalManagerRunnable(final DruidCoordinator c, final int
startingLeaderCounter)
and then, reference c instead of DruidCoordinator.this throughout that
constructor method. You can probably make this a static inner class at
that point, although I haven't analyzed it that far.
The exception that shows up in the coordinator-overlord.log is:
2019-10-31T16:23:02,953 ERROR
[LeaderSelector[/druid/coordinator/_COORDINATOR]]
org.apache.curator.framework.listen.ListenerContainer - Listener
(org.apache.druid.curator.discovery.CuratorDruidLeaderSelector$1@1e7d3d87 )
threw an exception
java.lang.ClassFormatError: Illegal field name
"org.apache.druid.server.coordinator.DruidCoordinator$this" in class
org/apache/druid/server/coordinator/DruidCoordinator$CoordinatorHistoricalManagerRunnable
I have tried to make this change myself and to test it, but I am unable to
build the project due to rat licensing issues. Also, when I don't run rat via
the mvn build, i get another error: gpg: signing failed: No pinentry
..
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-gpg-plugin:1.6:sign (sign-release-artifacts) on
project druid: Exit code: 2 -> [Help 1]
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