IntelliJ freezing (maybe when hovering a symbol to get documentation)

[afucher]

Sometimes when I'm using IntelliJ it just freezes, I close with a Force Quit. When I open it again it shows me this error:

Freeze for 20 seconds
IDE KILLED! Sampled time: 14200ms, sampling rate: 100ms, GC time: 37ms (0%), Class loading: 0%

The stack is from the thread that was blocking EDT

com.intellij.diagnostic.Freeze
	at java.base@17.0.6/jdk.internal.misc.Unsafe.park(Native Method)
	at java.base@17.0.6/java.util.concurrent.locks.LockSupport.park(LockSupport.java:211)
	at java.base@17.0.6/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:715)
	at java.base@17.0.6/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1047)
	at java.base@17.0.6/java.util.concurrent.CountDownLatch.await(CountDownLatch.java:230)
	at clojure.core$promise$reify__8591.deref(core.clj:7177)
	at clojure.core$deref.invokeStatic(core.clj:2337)
	at clojure.core$deref.invoke(core.clj:2323)
	at com.github.clojure_lsp.intellij.extension.documentation$build_doc.invokeStatic(documentation.clj:19)
	at com.github.clojure_lsp.intellij.extension.documentation$build_doc.invoke(documentation.clj:16)
	at com.github.clojure_lsp.intellij.extension.documentation$_generateDoc.invokeStatic(documentation.clj:38)
	at com.github.clojure_lsp.intellij.extension.documentation$_generateDoc.invoke(documentation.clj:37)
	at com.github.clojure_lsp.intellij.extension.Documentation.generateDoc(Unknown Source)
	at com.intellij.lang.documentation.CompositeDocumentationProvider.generateDoc(CompositeDocumentationProvider.java:135)
	at com.intellij.lang.documentation.psi.PsiElementDocumentationTarget.localDocHtml(PsiElementDocumentationTarget.kt:102)
	at com.intellij.lang.documentation.psi.PsiElementDocumentationTarget.localDoc(PsiElementDocumentationTarget.kt:88)
	at com.intellij.lang.documentation.psi.PsiElementDocumentationTarget.computeDocumentation(PsiElementDocumentationTarget.kt:75)
	at com.intellij.lang.documentation.impl.ImplKt$computeDocumentation$2$documentationResult$1.invoke(impl.kt:58)
	at com.intellij.lang.documentation.impl.ImplKt$computeDocumentation$2$documentationResult$1.invoke(impl.kt:57)
	at com.intellij.openapi.application.rw.InternalReadAction.insideReadAction(InternalReadAction.kt:90)
	at com.intellij.openapi.application.rw.InternalReadAction.access$insideReadAction(InternalReadAction.kt:15)
	at com.intellij.openapi.application.rw.InternalReadAction$tryReadCancellable$1.invoke(InternalReadAction.kt:74)
	at com.intellij.openapi.application.rw.InternalReadAction$tryReadCancellable$1.invoke(InternalReadAction.kt:73)
	at com.intellij.openapi.progress.CancellationKt.withCurrentJob$lambda$0(cancellation.kt:17)
	at com.intellij.openapi.progress.CancellationKt$$Lambda$1440/0x00000003017af658.compute(Unknown Source)
	at com.intellij.openapi.progress.Cancellation.withCurrentJob(Cancellation.java:60)
	at com.intellij.openapi.progress.CancellationKt.withCurrentJob(cancellation.kt:17)
	at com.intellij.openapi.progress.CancellationKt.executeWithJobAndCompleteIt(cancellation.kt:125)
	at com.intellij.openapi.application.rw.CancellableReadActionKt.cancellableReadActionInternal$lambda$1$lambda$0(cancellableReadAction.kt:49)
	at com.intellij.openapi.application.rw.CancellableReadActionKt$$Lambda$1496/0x00000003018d49f8.run(Unknown Source)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1111)
	at com.intellij.openapi.application.rw.CancellableReadActionKt.cancellableReadActionInternal$lambda$1(cancellableReadAction.kt:47)
	at com.intellij.openapi.application.rw.CancellableReadActionKt$$Lambda$1495/0x00000003018d47b0.run(Unknown Source)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtilService.runActionAndCancelBeforeWrite(ProgressIndicatorUtilService.java:63)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runActionAndCancelBeforeWrite(ProgressIndicatorUtils.java:128)
	at com.intellij.openapi.application.rw.CancellableReadActionKt.cancellableReadActionInternal(cancellableReadAction.kt:45)
	at com.intellij.openapi.application.rw.InternalReadAction.tryReadCancellable(InternalReadAction.kt:73)
	at com.intellij.openapi.application.rw.InternalReadAction.access$tryReadCancellable(InternalReadAction.kt:15)
	at com.intellij.openapi.application.rw.InternalReadAction$tryReadAction$2.invoke(InternalReadAction.kt:59)
	at com.intellij.openapi.application.rw.InternalReadAction$tryReadAction$2.invoke(InternalReadAction.kt:54)
	at com.intellij.openapi.progress.CancellationKt.withCurrentJob$lambda$0(cancellation.kt:17)
	at com.intellij.openapi.progress.CancellationKt$$Lambda$1440/0x00000003017af658.compute(Unknown Source)
	at com.intellij.openapi.progress.Cancellation.withCurrentJob(Cancellation.java:60)
	at com.intellij.openapi.progress.CancellationKt.withCurrentJob(cancellation.kt:17)
	at com.intellij.openapi.progress.CoroutinesKt.blockingContext(coroutines.kt:142)
	at com.intellij.openapi.application.rw.InternalReadAction.tryReadAction(InternalReadAction.kt:54)
	at com.intellij.openapi.application.rw.InternalReadAction.readLoop(InternalReadAction.kt:46)
	at com.intellij.openapi.application.rw.InternalReadAction.access$readLoop(InternalReadAction.kt:15)
	at com.intellij.openapi.application.rw.InternalReadAction$runReadAction$2.invokeSuspend(InternalReadAction.kt:27)
	at com.intellij.openapi.application.rw.InternalReadAction$runReadAction$2.invoke(InternalReadAction.kt)
	at com.intellij.openapi.application.rw.InternalReadAction$runReadAction$2.invoke(InternalReadAction.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.withContext(Builders.common.kt:169)
	at kotlinx.coroutines.BuildersKt.withContext(Unknown Source)
	at com.intellij.openapi.application.rw.InternalReadAction.runReadAction(InternalReadAction.kt:23)
	at com.intellij.openapi.application.rw.PlatformReadActionSupport.executeReadAction(PlatformReadActionSupport.kt:24)
	at com.intellij.openapi.application.CoroutinesKt.constrainedReadAction(coroutines.kt:51)
	at com.intellij.openapi.application.CoroutinesKt.readAction(coroutines.kt:19)
	at com.intellij.lang.documentation.impl.ImplKt$computeDocumentation$2.invokeSuspend(impl.kt:57)
	at com.intellij.lang.documentation.impl.ImplKt$computeDocumentation$2.invoke(impl.kt)
	at com.intellij.lang.documentation.impl.ImplKt$computeDocumentation$2.invoke(impl.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.withContext(Builders.common.kt:169)
	at kotlinx.coroutines.BuildersKt.withContext(Unknown Source)
	at com.intellij.lang.documentation.impl.ImplKt.computeDocumentation(impl.kt:56)
	at com.intellij.lang.documentation.ide.impl.DocumentationPage.loadPage(DocumentationPage.kt:32)
	at com.intellij.lang.documentation.ide.impl.DocumentationBrowser.handleBrowserRequest(DocumentationBrowser.kt:91)
	at com.intellij.lang.documentation.ide.impl.DocumentationBrowser.access$handleBrowserRequest(DocumentationBrowser.kt:24)
	at com.intellij.lang.documentation.ide.impl.DocumentationBrowser$1$1.invokeSuspend(DocumentationBrowser.kt:51)
	at com.intellij.lang.documentation.ide.impl.DocumentationBrowser$1$1.invoke(DocumentationBrowser.kt)
	at com.intellij.lang.documentation.ide.impl.DocumentationBrowser$1$1.invoke(DocumentationBrowser.kt)
	at kotlinx.coroutines.flow.FlowKt__MergeKt$mapLatest$1.invokeSuspend(Merge.kt:214)
	at kotlinx.coroutines.flow.FlowKt__MergeKt$mapLatest$1.invoke(Merge.kt)
	at kotlinx.coroutines.flow.FlowKt__MergeKt$mapLatest$1.invoke(Merge.kt)
	at kotlinx.coroutines.flow.internal.ChannelFlowTransformLatest$flowCollect$3$1$2.invokeSuspend(Merge.kt:34)
	at kotlinx.coroutines.flow.internal.ChannelFlowTransformLatest$flowCollect$3$1$2.invoke(Merge.kt)
	at kotlinx.coroutines.flow.internal.ChannelFlowTransformLatest$flowCollect$3$1$2.invoke(Merge.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startCoroutineUndispatched(Undispatched.kt:55)
	at kotlinx.coroutines.CoroutineStart.invoke(CoroutineStart.kt:112)
	at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:126)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:56)
	at kotlinx.coroutines.BuildersKt.launch(Unknown Source)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch$default(Builders.common.kt:47)
	at kotlinx.coroutines.BuildersKt.launch$default(Unknown Source)
	at kotlinx.coroutines.flow.internal.ChannelFlowTransformLatest$flowCollect$3$1.emit(Merge.kt:33)
	at kotlinx.coroutines.flow.SharedFlowImpl.collect$suspendImpl(SharedFlow.kt:383)
	at kotlinx.coroutines.flow.SharedFlowImpl$collect$1.invokeSuspend(SharedFlow.kt)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)

[ericdallo]

@afucher I can't repro even adding a Thread/sleep on that line (check the print) 🤔, could you give more details about your OS, Intellij and plugin version?
Also, does that happens on smaller projects like https://github.com/ericdallo/clojure-sample?

[afucher]

I don't know if I can try with clojure-sample, because it happens randomly while I'm using. But about smaller projects, today it happened when I was working in the https://github.com/afucher/clojure-repl-intellij

[ericdallo]

Fixed in 3.0.0