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https://issues.apache.org/jira/browse/GEODE-2488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15868317#comment-15868317
]
Kirk Lund edited comment on GEODE-2488 at 2/15/17 6:37 PM:
-----------------------------------------------------------
NetstatFunction reads in every line from the netstat output and lsof output as
a String and then appends it to a StringBuilder. When it completes, it invokes
toString which throws "OutOfMemoryError: Java heap space."
After that it would copy the String into a byte array which is then passed to
CliUtil.compressBytes. This creates one more giant byte array containing the
entire netstat output in compressed form. It's this last byte array which then
gets sent to the Locator on a socket.
If the initial toString() doesn't run out of memory, getBytes() or
compressBytes() could both push the JVM out of memory as well. I think the fix
might require streaming the results back one readLine() at a time instead of
trying to build up a giant String and two giant byte[] arrays of the entire
output in memory.
was (Author: klund):
NetstatFunction reads in every line from the netstat output and lsof output as
a String and then appends it to a StringBuilder. When it completes, it invokes
toString which throws "OutOfMemoryError: Java heap space."
After that it copies the String into a byte array which is then passed to
CliUtil.compressBytes. This creates one more giant byte array containing the
entire netstat output in compressed form. It's this last byte array which then
gets sent to the Locator on a socket.
If the initial toString() doesn't run out of memory, getBytes() or
compressBytes() could both push the JVM out of memory as well. I think the fix
might require streaming the results back one readLine() at a time instead of
trying to build up a giant String and two giant byte[] arrays of the entire
output in memory.
> NetstatDUnitTest fails with OutOfMemoryError
> --------------------------------------------
>
> Key: GEODE-2488
> URL: https://issues.apache.org/jira/browse/GEODE-2488
> Project: Geode
> Issue Type: Bug
> Components: gfsh, management
> Reporter: Kirk Lund
> Labels: MiscellaneousCommands, NetstatCommand, netstat
>
> The JUnit controller JVM for NetstatDUnitTest fails with something like the
> follow stack. The cause appears to be one of the DUnit VMs running out of
> memory (see the OOME stack down further in this description.
> {noformat}
> org.junit.ComparisonFailure: [{"errorCode":505,"message":["Could not process
> command due to GemFire error. Error occurred while executing netstat on
> [server-1]"]}] expected:<[OK]> but was:<[ERROR]>
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at
> org.apache.geode.test.dunit.rules.GfshShellConnectionRule.executeAndVerifyCommand(GfshShellConnectionRule.java:163)
> at
> org.apache.geode.management.internal.cli.NetstatDUnitTest.testConnectToJmxManagerOne(NetstatDUnitTest.java:81)
> 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at
> org.apache.geode.test.junit.rules.DescribedExternalResource$1.evaluate(DescribedExternalResource.java:37)
> at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
> at org.junit.rules.RunRules.evaluate(RunRules.java:20)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:114)
> at
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:57)
> at
> org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:66)
> at
> org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
> at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
> at
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
> at
> org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
> at
> org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
> at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
> at
> org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:109)
> at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
> at
> org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
> at
> org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:377)
> at
> org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
> at
> org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> The JVM that runs out of memory ends up logging multiple OutOfMemoryError
> stacks:
> {noformat}
> [vm1] 25.584: [GC (System.gc()) [PSYoungGen: 7724K->591K(161792K)]
> 242411K->235286K(511488K), 0.0047912 secs] [Times: user=0.02 sys=0.00,
> real=0.01 secs]
> [vm1] 25.589: [Full GC (System.gc()) [PSYoungGen: 591K->0K(161792K)]
> [ParOldGen: 234695K->9294K(349696K)] 235286K->9294K(511488K), [Metaspace:
> 34478K->34478K(1081344K)], 0.0891637 secs] [Times: user=0.72 sys=0.01,
> real=0.09 secs]
> [vm1] [error 2017/02/14 09:36:13.738 UTC <Cache Server Acceptor
> 0.0.0.0/0.0.0.0:36823 local port: 36823> tid=0x46] Cache server: Unexpected
> IOException from accept
> [vm1] [fatal 2017/02/14 09:36:13.739 UTC <unused p2p reader> tid=0x4f]
> Uncaught exception in thread Thread[unused p2p reader,10,P2P Reader Threads]
> [vm1] java.lang.OutOfMemoryError: Java heap space
> [vm1] at java.util.Arrays.copyOfRange(Arrays.java:3664)
> [vm1] at java.lang.String.<init>(String.java:207)
> [vm1] at java.lang.StringBuilder.toString(StringBuilder.java:407)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.executeCommand(NetstatFunction.java:193)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.execute(NetstatFunction.java:70)
> [vm1] at
> org.apache.geode.internal.cache.MemberFunctionStreamingMessage.process(MemberFunctionStreamingMessage.java:191)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(DistributionMessage.java:376)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage$1.run(DistributionMessage.java:442)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager.runUntilShutdown(DistributionManager.java:621)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager$9$1.run(DistributionManager.java:1067)
> [vm1] at java.lang.Thread.run(Thread.java:745)
> [vm1] [fatal 2017/02/14 09:36:13.738 UTC <Function Execution Processor1>
> tid=0x48] Uncaught exception in thread Thread[Function Execution
> Processor1,10,DistributionManager Threads]
> [vm1] java.lang.OutOfMemoryError: Java heap space
> [vm1] at java.util.Arrays.copyOfRange(Arrays.java:3664)
> [vm1] at java.lang.String.<init>(String.java:207)
> [vm1] at java.lang.StringBuilder.toString(StringBuilder.java:407)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.executeCommand(NetstatFunction.java:193)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.execute(NetstatFunction.java:70)
> [vm1] at
> org.apache.geode.internal.cache.MemberFunctionStreamingMessage.process(MemberFunctionStreamingMessage.java:191)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(DistributionMessage.java:376)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage$1.run(DistributionMessage.java:442)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager.runUntilShutdown(DistributionManager.java:621)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager$9$1.run(DistributionManager.java:1067)
> [vm1] at java.lang.Thread.run(Thread.java:745)
> [vm1] [fatal 2017/02/14 09:36:13.740 UTC <Cache Server Acceptor
> 0.0.0.0/0.0.0.0:36823 local port: 36823> tid=0x46] Uncaught exception in
> thread Thread[Cache Server Acceptor 0.0.0.0/0.0.0.0:36823 local port:
> 36823,5,Acceptor 0.0.0.0/0.0.0.0:36823]
> [vm1] java.lang.OutOfMemoryError: Java heap space
> [vm1] at java.util.Arrays.copyOfRange(Arrays.java:3664)
> [vm1] at java.lang.String.<init>(String.java:207)
> [vm1] at java.lang.StringBuilder.toString(StringBuilder.java:407)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.executeCommand(NetstatFunction.java:193)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.execute(NetstatFunction.java:70)
> [vm1] at
> org.apache.geode.internal.cache.MemberFunctionStreamingMessage.process(MemberFunctionStreamingMessage.java:191)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(DistributionMessage.java:376)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage$1.run(DistributionMessage.java:442)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager.runUntilShutdown(DistributionManager.java:621)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager$9$1.run(DistributionManager.java:1067)
> [vm1] at java.lang.Thread.run(Thread.java:745)
> [vm1] [fatal 2017/02/14 09:36:13.744 UTC <unused p2p reader> tid=0x47]
> Uncaught exception in thread Thread[unused p2p reader,10,P2P Reader Threads]
> [vm1] java.lang.OutOfMemoryError: Java heap space
> [vm1] at java.util.Arrays.copyOfRange(Arrays.java:3664)
> [vm1] at java.lang.String.<init>(String.java:207)
> [vm1] at java.lang.StringBuilder.toString(StringBuilder.java:407)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.executeCommand(NetstatFunction.java:193)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.execute(NetstatFunction.java:70)
> [vm1] at
> org.apache.geode.internal.cache.MemberFunctionStreamingMessage.process(MemberFunctionStreamingMessage.java:191)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(DistributionMessage.java:376)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage$1.run(DistributionMessage.java:442)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager.runUntilShutdown(DistributionManager.java:621)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager$9$1.run(DistributionManager.java:1067)
> [vm1] at java.lang.Thread.run(Thread.java:745)
> [vm1] [fatal 2017/02/14 09:36:13.748 UTC <unused p2p reader> tid=0x54]
> Uncaught exception in thread Thread[unused p2p reader,10,P2P Reader Threads]
> [vm1] java.lang.OutOfMemoryError: Java heap space
> [vm1] at java.util.Arrays.copyOfRange(Arrays.java:3664)
> [vm1] at java.lang.String.<init>(String.java:207)
> [vm1] at java.lang.StringBuilder.toString(StringBuilder.java:407)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.executeCommand(NetstatFunction.java:193)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.execute(NetstatFunction.java:70)
> [vm1] at
> org.apache.geode.internal.cache.MemberFunctionStreamingMessage.process(MemberFunctionStreamingMessage.java:191)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(DistributionMessage.java:376)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage$1.run(DistributionMessage.java:442)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager.runUntilShutdown(DistributionManager.java:621)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager$9$1.run(DistributionManager.java:1067)
> [vm1] at java.lang.Thread.run(Thread.java:745)
> [vm1] [fatal 2017/02/14 09:36:14.602 UTC <ClientHealthMonitor Thread>
> tid=0x45] Uncaught exception in thread Thread[ClientHealthMonitor
> Thread,5,ClientHealthMonitor Thread Group]
> [vm1] java.lang.OutOfMemoryError: Java heap space
> [vm1] at java.util.Arrays.copyOfRange(Arrays.java:3664)
> [vm1] at java.lang.String.<init>(String.java:207)
> [vm1] at java.lang.StringBuilder.toString(StringBuilder.java:407)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.executeCommand(NetstatFunction.java:193)
> [vm1] at
> org.apache.geode.management.internal.cli.functions.NetstatFunction.execute(NetstatFunction.java:70)
> [vm1] at
> org.apache.geode.internal.cache.MemberFunctionStreamingMessage.process(MemberFunctionStreamingMessage.java:191)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage.scheduleAction(DistributionMessage.java:376)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionMessage$1.run(DistributionMessage.java:442)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [vm1] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager.runUntilShutdown(DistributionManager.java:621)
> [vm1] at
> org.apache.geode.distributed.internal.DistributionManager$9$1.run(DistributionManager.java:1067)
> [vm1] at java.lang.Thread.run(Thread.java:745)
> {noformat}
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