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https://issues.apache.org/jira/browse/SUREFIRE-1818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17792452#comment-17792452
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Michael Osipov commented on SUREFIRE-1818:
------------------------------------------
Is this still the case? If yes, can you easily provide a sample project?
> Surefire buffers log messages in memory instead of printing them out to the
> terminal which leads to OOM error.
> --------------------------------------------------------------------------------------------------------------
>
> Key: SUREFIRE-1818
> URL: https://issues.apache.org/jira/browse/SUREFIRE-1818
> Project: Maven Surefire
> Issue Type: Bug
> Affects Versions: 2.22.1
> Reporter: Anton Ermolenko
> Priority: Major
> Fix For: waiting-for-feedback
>
> Attachments: image-2020-07-11-18-57-41-164.png
>
>
> For unknown reason when running tests Surefire version 2.22.1 buffers logging
> messages in memory in {{ConcurrentLinkedQueue}} which leads to
> OutOfMemoryError when amount of logging messages is sufficiently large. If
> amount of memory is big enough to hold those messages, Surefire will print
> those log messages after running the tests.
> Downgrading to 2.18.1 resolves the issue and log messages appear on the
> terminal without delay.
> While it's printing those messages the following stack trace can be observed:
> {code:java}
> "main" #1 prio=5 os_prio=0 tid=0x00007f3ff400b000 nid=0x30adf runnable
> [0x00007f3ffb3d7000]
> java.lang.Thread.State: RUNNABLE
> at java.io.FileOutputStream.writeBytes(Native Method)
> at java.io.FileOutputStream.write(FileOutputStream.java:326)
> at
> java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
> at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
> - locked <0x00000005cc251490> (a java.io.BufferedOutputStream)
> at java.io.PrintStream.write(PrintStream.java:482)
> - locked <0x00000005cc251470> (a java.io.PrintStream)
> at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
> at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
> at sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:104)
> - locked <0x00000005cc2515b0> (a java.io.OutputStreamWriter)
> at java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:185)
> at java.io.PrintStream.write(PrintStream.java:527)
> - locked <0x00000005cc251470> (a java.io.PrintStream)
> at java.io.PrintStream.print(PrintStream.java:583)
> at
> org.fusesource.jansi.FilterPrintStream.write(FilterPrintStream.java:99)
> at
> org.fusesource.jansi.FilterPrintStream.write(FilterPrintStream.java:107)
> at
> org.fusesource.jansi.FilterPrintStream.print(FilterPrintStream.java:156)
> at
> org.fusesource.jansi.FilterPrintStream.println(FilterPrintStream.java:231)
> - locked <0x00000005cc22b6d0> (a org.fusesource.jansi.AnsiConsole$2)
> at org.slf4j.impl.SimpleLogger.write(SimpleLogger.java:318)
> at org.slf4j.impl.SimpleLogger.log(SimpleLogger.java:295)
> at org.slf4j.impl.SimpleLogger.warn(SimpleLogger.java:522)
> at org.apache.maven.cli.logging.Slf4jLogger.warn(Slf4jLogger.java:74)
> at
> org.apache.maven.plugin.surefire.log.PluginConsoleLogger.warning(PluginConsoleLogger.java:92)
> at
> org.apache.maven.plugin.surefire.booterclient.ForkStarter$CloseableCloser.run(ForkStarter.java:203)
> at
> org.apache.maven.surefire.shade.org.apache.maven.shared.utils.cli.CommandLineUtils$1.call(CommandLineUtils.java:282)
> at
> org.apache.maven.plugin.surefire.booterclient.ForkStarter.fork(ForkStarter.java:614)
> at
> org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:282)
> at
> org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:245)
> at
> org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider(AbstractSurefireMojo.java:1183)
> at
> org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked(AbstractSurefireMojo.java:1011)
> at
> org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute(AbstractSurefireMojo.java:857)
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
> at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
> at
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
> at org.apache.maven.cli.MavenCli.execute(MavenCli.java:954)
> at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
> {code}
> Dominator tree of produced heap dump:
> !image-2020-07-11-18-57-41-164.png|width=581,height=86!
>
> Heap dump can be downloaded
> [here|https://drive.google.com/file/d/1LL2ZRmUmIb708HUFC1wNfeRDMOtIwKWz/view?usp=sharing]
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