Disable jar hell

bendg25 · October 15, 2017, 5:05pm

Hi,

Is there any way to disable jar hell?

dadoonet · October 15, 2017, 5:41pm

No.

Why would you? You don't want to have JAR conflicts in your classpath, right?

What is the problem you have?

bendg25 · October 15, 2017, 7:03pm

I am running with Intellij 2017.2.5, build 172.4343.14:
It appears to be an idea_rt.jar conflict on the classpath (assuming I am reading the error right). Full stack trace at bottom.

In terms of why I would want to disable it. Reason is most jar conflicts don't result in major issues. When they do, they tend to throw exceptions anyway, and I am use to sorting these out myself. I can use mvn dependency:tree and exclude as neccesary. The trouble with having Jar Hell enabled in the ES project, in my opinion, is that it is a 'barrier to entry', it is something that causes people issues, when 90% of the time, the issues JarHell raises are not that important.

In the same way, the official ES docker image has defaulted to having authentication switched on. I am not arguing that this is desirable for test/production, but for development, it makes devs deal with those concerns way before they actually need to. There could be a mode / profile for people to invoke jar hell if they faced any issues.

Anyway, here is my stack trace:

Caused by: java.lang.IllegalStateException: jar hell!
duplicate jar [/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar] on classpath: /Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/junit/lib/junit-rt.jar:/Applications/IntelliJ IDEA.app/Contents/plugins/junit/lib/junit5-rt.jar:..../Users/bengill/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/8.5.15/tomcat-embed-websocket-8.5.15.jar:/Users/bengill/.m2/repository/org/springframework/spring-webmvc/4.3.9.RELEASE/spring-webmvc-4.3.9.RELEASE.jar:/Users/bengill/dev/flo/app-api/target/classes:/Users/bengill/dev/flo/shared/target/classes:/Users/bengill/dev/flo/search-api/target/classes:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar
at org.elasticsearch.bootstrap.JarHell.parseClassPath(JarHell.java:142)
at org.elasticsearch.bootstrap.JarHell.parseClassPath(JarHell.java:99)
at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:90)
at org.elasticsearch.bootstrap.BootstrapForTesting.(BootstrapForTesting.java:89)

dadoonet · October 15, 2017, 7:20pm

Read https://github.com/elastic/elasticsearch/blob/master/CONTRIBUTING.md

There is a chapter regarding this.

HTH

bendg25 · October 16, 2017, 4:56am

Thanks David,

That has solved that problem. Then I hit jarhell due to logging libraries (had to exlcude commons-logging), now I am onto another jarhell issue as I happen to have a duplicate Q generated class due to the way some of my persistent domain modules are structured, so even through this is completely harmless, I have to work out how to stop it generating Q classes on pom dependency modules.

This is why I dislike jarhell so much.

dadoonet · October 16, 2017, 5:13am

Yeah. It’s annoying.... Until you discover that it’s going to protect yourself from doing bad things like:

bendg25 · October 16, 2017, 5:34am

I have progressed:

Exclude mysema
securemock collision
Downgrade junit to 4.11
exclude hamcrest-core

But still have:

ERROR StatusLogger Log4j2 could not find a logging implementation. Please add log4j-core to the classpath. Using SimpleLogger to log to the console...

java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "accessDeclaredMembers")

	at java.security.AccessControlContext.checkPermission(AccessControlContext.java:472)
	at java.security.AccessController.checkPermission(AccessController.java:884)
	at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
	at java.lang.Class.checkMemberAccess(Class.java:2348)
	at java.lang.Class.getDeclaredMethods(Class.java:1974)
	at org.junit.internal.MethodSorter.getDeclaredMethods(MethodSorter.java:54)
	at org.junit.runners.model.TestClass.<init>(TestClass.java:45)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$12.run(RandomizedRunner.java:1053)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$12.run(RandomizedRunner.java:1050)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.getAnnotatedFieldValues(RandomizedRunner.java:1050)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.withClassRules(RandomizedRunner.java:885)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.runSuite(RandomizedRunner.java:674)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.access$200(RandomizedRunner.java:140)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$2.run(RandomizedRunner.java:598)


Test ignored.

Test ignored.

Test ignored.

Test ignored.
REPRODUCE WITH: gradle null -Dtests.seed=E95D0993190E9325 -Dtests.class=com.sparksdev.flo.search.service.SearchIT -Dtests.locale=en-GB -Dtests.timezone=Europe/London
NOTE: Mac OS X 10.12.6 x86_64/Oracle Corporation 1.8.0_144 (64-bit)/cpus=8,threads=1,free=287936064,total=324534272
NOTE: All tests run in this JVM: [SearchIT]
Exception in thread "Thread-1" java.lang.ClassCastException: org.apache.logging.log4j.simple.SimpleLoggerContext cannot be cast to org.apache.logging.log4j.core.LoggerContext
	at org.elasticsearch.test.ESTestCase.lambda$static$0(ESTestCase.java:171)
	at java.lang.Thread.run(Thread.java:748)
	Suppressed: java.security.AccessControlException: access denied ("org.elasticsearch.ThreadPermission" "modifyArbitraryThreadGroup")
		at java.security.AccessControlContext.checkPermission(AccessControlContext.java:472)
		at java.security.AccessController.checkPermission(AccessController.java:884)
		at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
		at org.elasticsearch.SecureSM.checkThreadGroupAccess(SecureSM.java:194)
		at org.elasticsearch.SecureSM.checkAccess(SecureSM.java:141)
		at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:315)
		at java.lang.ThreadGroup.getParent(ThreadGroup.java:167)
		at com.carrotsearch.randomizedtesting.RandomizedContext.context(RandomizedContext.java:240)
		at com.carrotsearch.randomizedtesting.RandomizedContext.current(RandomizedContext.java:134)
		at com.carrotsearch.randomizedtesting.RandomizedRunner.augmentStackTrace(RandomizedRunner.java:1848)
		at com.carrotsearch.randomizedtesting.RunnerThreadGroup.uncaughtException(RunnerThreadGroup.java:20)
		at java.lang.Thread.dispatchUncaughtException(Thread.java:1959)

Process finished with exit code 255

bendg25 · October 16, 2017, 5:54am

I have it working now, reverting back to using this worked for me:

@RunWith(com.carrotsearch.randomizedtesting.RandomizedRunner.class)
@ContextConfiguration(classes = { SearchTestSpringConfig.class } )
@ThreadLeakScope(ThreadLeakScope.Scope.NONE)
public class SearchIT extends ESTestCase {

(rather than using ESIntegTestCase).

That was harder than it should have been!

dadoonet · October 16, 2017, 6:06am

Please format your code using </> icon as explained in this guide. It will make your post more readable.

Or use markdown style like:

```
CODE
```

I edited your posts.

That was harder than it should have been!

Hard to say. I don't really know what you are doing. Building a plugin may be?

system · November 13, 2017, 6:06am

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.

Topic		Replies	Views
ElasticSearch 2.0 java api JarHell problems Elasticsearch	30	9060	July 5, 2017
PLEASE PLEASE provide a way to turn off JarHell classpath checking! Elasticsearch	10	2812	July 5, 2017
JAR Hell error coming when upgrading from ES 1.x to ES 2.3.5 Elasticsearch	12	1285	July 5, 2017
How do I deal with this particular jar hell issue? Elasticsearch	4	652	July 11, 2018
"Jar Hell" in Eclipse project that requires JBoss modules jars Elasticsearch	2	1255	July 5, 2017

Disable jar hell

Related topics