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2020-05-06

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#tools-deps
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2020-05-06
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ikitommi15:05:46

After removing a directory from my .m2/repository, my clj failed the find dependencies using clj -m nrepl.cmdline -i -C. After doing any modification to the deps.edn , it reloaded the missing libs from clojars. Is there some local cache that caused this?

ikitommi15:05:38

e.g. “`deps.edn` unchanged, we have all the deps already”?

delaguardo15:05:36

class path cache is in .cpcache and yes, unchanged deps.edn means all dependencies already downloaded

ikitommi15:05:35

Thanks, I should have read the history better.

seancorfield16:05:50

clj -Sforce is your friend here. I've tripped over this too.

👌 8
kenny19:05:24

We have been getting this exception fairly frequently on CI builds. Retrying the job succeeds. Any idea what this is? 

Error building classpath. class java.util.HashMap$Node cannot be cast to class java.util.HashMap$TreeNode (java.util.HashMap$Node and java.util.HashMap$TreeNode are in module java.base of loader 'bootstrap')
java.lang.ClassCastException: class java.util.HashMap$Node cannot be cast to class java.util.HashMap$TreeNode (java.util.HashMap$Node and java.util.HashMap$TreeNode are in module java.base of loader 'bootstrap')
	at java.base/java.util.HashMap$TreeNode.moveRootToFront(HashMap.java:1882)
	at java.base/java.util.HashMap$TreeNode.treeify(HashMap.java:1998)
	at java.base/java.util.HashMap.treeifyBin(HashMap.java:767)
	at java.base/java.util.HashMap.putVal(HashMap.java:639)
	at java.base/java.util.HashMap.put(HashMap.java:607)
	at java.base/java.util.HashSet.add(HashSet.java:220)
	at org.apache.maven.model.validation.DefaultModelValidator.validateId(DefaultModelValidator.java:847)
	at org.apache.maven.model.validation.DefaultModelValidator.validateEffectiveDependency(DefaultModelValidator.java:659)
	at org.apache.maven.model.validation.DefaultModelValidator.validateEffectiveDependencies(DefaultModelValidator.java:583)
	at org.apache.maven.model.validation.DefaultModelValidator.validateEffectiveModel(DefaultModelValidator.java:373)
	at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:494)
	at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:440)
	at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:430)
	at org.apache.maven.model.building.DefaultModelBuilder.importDependencyManagement(DefaultModelBuilder.java:1299)
	at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:474)
	at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:440)
	at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:430)
	at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:292)
	at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:171)
	at org.eclipse.aether.internal.impl.DefaultRepositorySystem.readArtifactDescriptor(DefaultRepositorySystem.java:255)
	at clojure.tools.deps.alpha.extensions.maven$eval813$fn__815.invoke(maven.clj:99)
	at clojure.lang.MultiFn.invoke(MultiFn.java:244)
	at clojure.tools.deps.alpha$expand_deps$fn__1230$fn__1231.invoke(alpha.clj:214)
	at clojure.tools.deps.alpha.util.concurrent$submit_task$task__500.invoke(concurrent.clj:33)
	at clojure.lang.AFn.call(AFn.java:18)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)

hiredman20:05:25

that is a race condition when using a hash map from multiple threads, there was a recent-ish change to clj to do some stuff in parallel, and I bet if you disabled that those exceptions would go away

hiredman20:05:12

you can stick :threads 1 in your deps.edn somewhere to download single threaded

Alex Miller (Clojure team)20:05:52

(But going to be a resolve-args alias)

Alex Miller (Clojure team)20:05:34

I haven’t seen this error anywhere before

Alex Miller (Clojure team)20:05:35

I will file a ticket to take a closer look