#org.jetbrains.idea.maven - java.lang.OutOfMemoryError: Java heap space

Question

My Java project build constantly failing with the following exception

```java
2020-12-15 09:57:59,021 [2072793]   INFO -      #org.jetbrains.idea.maven - java.lang.OutOfMemoryError: Java heap space 
java.lang.RuntimeException: java.lang.OutOfMemoryError: Java heap space
	at com.intellij.execution.rmi.RemoteUtil.invokeRemote(RemoteUtil.java:165)
	at com.intellij.execution.rmi.RemoteUtil.access$400(RemoteUtil.java:25)
	at com.intellij.execution.rmi.RemoteUtil$1.lambda$invoke$0(RemoteUtil.java:139)
	at com.intellij.openapi.util.ClassLoaderUtil.computeWithClassLoader(ClassLoaderUtil.java:31)
	at com.intellij.execution.rmi.RemoteUtil.executeWithClassLoader(RemoteUtil.java:207)
	at com.intellij.execution.rmi.RemoteUtil$1.invoke(RemoteUtil.java:139)
	at com.sun.proxy.$Proxy158.resolveProject(Unknown Source)
	at org.jetbrains.idea.maven.server.MavenEmbedderWrapper.lambda$resolveProject$5(MavenEmbedderWrapper.java:115)
	at org.jetbrains.idea.maven.server.RemoteObjectWrapper.performCancelable(RemoteObjectWrapper.java:89)
	at org.jetbrains.idea.maven.server.MavenEmbedderWrapper.resolveProject(MavenEmbedderWrapper.java:113)
	at org.jetbrains.idea.maven.project.MavenProjectReader.resolveProject(MavenProjectReader.java:480)
	at org.jetbrains.idea.maven.project.MavenProjectResolver.doResolve(MavenProjectResolver.java:139)
	at org.jetbrains.idea.maven.project.MavenProjectResolver.resolve(MavenProjectResolver.java:78)
	at org.jetbrains.idea.maven.project.MavenProjectsProcessorResolvingTask.perform(MavenProjectsProcessorResolvingTask.java:45)
	at org.jetbrains.idea.maven.project.MavenProjectsProcessor.doProcessPendingTasks(MavenProjectsProcessor.java:141)
	at org.jetbrains.idea.maven.project.MavenProjectsProcessor.access$000(MavenProjectsProcessor.java:35)
	at org.jetbrains.idea.maven.project.MavenProjectsProcessor$1.run(MavenProjectsProcessor.java:110)
	at org.jetbrains.idea.maven.utils.MavenUtil.lambda$runInBackground$5(MavenUtil.java:488)
	at com.intellij.util.RunnableCallable.call(RunnableCallable.java:20)
	at com.intellij.util.RunnableCallable.call(RunnableCallable.java:11)
	at com.intellij.openapi.application.impl.ApplicationImpl$1.call(ApplicationImpl.java:255)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.OutOfMemoryError: Java heap space
	at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:143)
	at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)
	at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
	at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
	at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:157)
	at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
	at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
	at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
	at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
	at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
	at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
	at org.apache.maven.wagon.shared.http.AbstractHttpClientWagon.execute(AbstractHttpClientWagon.java:1005)
	at org.apache.maven.wagon.shared.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:1162)
	at org.apache.maven.wagon.shared.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:1140)
	at org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:126)
	at org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
	at org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
	at org.eclipse.aether.transport.wagon.WagonTransporter$GetTaskRunner.run(WagonTransporter.java:567)
	at org.eclipse.aether.transport.wagon.WagonTransporter.execute(WagonTransporter.java:435)
	at org.eclipse.aether.transport.wagon.WagonTransporter.get(WagonTransporter.java:412)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$GetTaskRunner.fetchChecksum(BasicRepositoryConnector.java:424)
	at org.eclipse.aether.connector.basic.ChecksumValidator.validateExternalChecksums(ChecksumValidator.java:157)
	at org.eclipse.aether.connector.basic.ChecksumValidator.validate(ChecksumValidator.java:103)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$GetTaskRunner.runTask(BasicRepositoryConnector.java:460)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:364)
	at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:75)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:644)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:262)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:499)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:401)
2020-12-15 09:57:59,058 [2072830]  ERROR -      #org.jetbrains.idea.maven - java.lang.OutOfMemoryError: Java heap space 
java.lang.RuntimeException: java.lang.OutOfMemoryError: Java heap space
	at com.intellij.execution.rmi.RemoteUtil.invokeRemote(RemoteUtil.java:165)
	at com.intellij.execution.rmi.RemoteUtil.access$400(RemoteUtil.java:25)
	at com.intellij.execution.rmi.RemoteUtil$1.lambda$invoke$0(RemoteUtil.java:139)
	at com.intellij.openapi.util.ClassLoaderUtil.computeWithClassLoader(ClassLoaderUtil.java:31)
	at com.intellij.execution.rmi.RemoteUtil.executeWithClassLoader(RemoteUtil.java:207)
	at com.intellij.execution.rmi.RemoteUtil$1.invoke(RemoteUtil.java:139)
	at com.sun.proxy.$Proxy158.resolvePlugin(Unknown Source)
	at org.jetbrains.idea.maven.server.MavenEmbedderWrapper.resolvePlugin(MavenEmbedderWrapper.java:163)
	at org.jetbrains.idea.maven.project.MavenProjectResolver.resolvePlugins(MavenProjectResolver.java:184)
	at org.jetbrains.idea.maven.project.MavenProjectsProcessorPluginsResolvingTask.perform(MavenProjectsProcessorPluginsResolvingTask.java:36)
	at org.jetbrains.idea.maven.project.MavenProjectsProcessor.doProcessPendingTasks(MavenProjectsProcessor.java:141)
	at org.jetbrains.idea.maven.project.MavenProjectsProcessor.access$000(MavenProjectsProcessor.java:35)
	at org.jetbrains.idea.maven.project.MavenProjectsProcessor$1.run(MavenProjectsProcessor.java:110)
	at org.jetbrains.idea.maven.utils.MavenUtil.lambda$runInBackground$5(MavenUtil.java:488)
	at com.intellij.util.RunnableCallable.call(RunnableCallable.java:20)
	at com.intellij.util.RunnableCallable.call(RunnableCallable.java:11)
	at com.intellij.openapi.application.impl.ApplicationImpl$1.call(ApplicationImpl.java:255)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.OutOfMemoryError: Java heap space
	at java.rmi/sun.rmi.transport.StreamRemoteCall.getInputStream(StreamRemoteCall.java:146)
	at java.rmi/sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:248)
	at java.rmi/sun.rmi.server.UnicastRef.invoke(UnicastRef.java:164)
	at java.rmi/java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:217)
	at java.rmi/java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:162)
	at com.sun.proxy.$Proxy3.artifactDownloaded(Unknown Source)
	at org.jetbrains.idea.maven.server.TransferListenerAdapter.transferSucceeded(TransferListenerAdapter.java:114)
	at org.eclipse.aether.internal.impl.SafeTransferListener.transferSucceeded(SafeTransferListener.java:139)
	at org.eclipse.aether.connector.basic.TransferTransportListener.transferSucceeded(TransferTransportListener.java:124)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:365)
	at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:75)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:644)
	at org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:262)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:499)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:401)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:229)
	at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:207)
	at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:240)
	at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:171)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.resolveCachedArtifactDescriptor(DefaultDependencyCollector.java:541)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.getArtifactDescriptorResult(DefaultDependencyCollector.java:524)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:412)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:365)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process(DefaultDependencyCollector.java:352)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:509)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:461)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:365)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.process(DefaultDependencyCollector.java:352)
	at org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:254)
	at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:284)
	at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolveInternal(DefaultPluginDependenciesResolver.java:205)
	at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:152)
2020-12-15 09:57:59,059 [2072831]  ERROR -      #org.jetbrains.idea.maven - IntelliJ IDEA 2020.1.4  Build #IC-201.8743.12 
2020-12-15 09:57:59,059 [2072831]  ERROR -      #org.jetbrains.idea.maven - JDK: 11.0.7; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o. 
2020-12-15 09:57:59,059 [2072831]  ERROR -      #org.jetbrains.idea.maven - OS: Mac OS X 
2020-12-15 09:57:59,059 [2072831]  ERROR -      #org.jetbrains.idea.maven - Last Action: ShowLog 
2020-12-15 09:58:10,839 [2084611]   INFO - .diagnostic.PerformanceWatcher - Searching for external libraries with Android resources. Found 0 libraries. took 1ms; general responsiveness: ok; EDT responsiveness: ok 
```

Karthik Divi · Accepted Answer

Try increasing the `-Xms` & `-Xmx` values in IntelliJ

As showing below

![](https://static.onecompiler.com/images/posts/3wfwqrpc5/Screenshot%202020-12-16%20at%201.25.15%20AM.png)

![](https://static.onecompiler.com/images/posts/3wfwqrpc5/Screenshot%202020-12-16%20at%201.25.44%20AM.png)

#org.jetbrains.idea.maven - java.lang.OutOfMemoryError: Java heap space

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