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https://issues.apache.org/jira/browse/YARN-8444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16518171#comment-16518171
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Jim Brennan commented on YARN-8444:
-----------------------------------
The bad value came from /proc/meminfo - it looks like it returned a negative
value expressed as an unsigned decimal value, which was too big to parse as a
long.
> NodeResourceMonitor crashes on bad swapFree value
> -------------------------------------------------
>
> Key: YARN-8444
> URL: https://issues.apache.org/jira/browse/YARN-8444
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.8.3, 3.0.2
> Reporter: Jim Brennan
> Assignee: Jim Brennan
> Priority: Major
>
> Saw this on a node that was having difficulty preempting containers. Can't
> have NodeResourceMonitor exiting. System was above 99% memory used at the
> time so it may only be something that happens when normal preemption isn't
> work right, but we should fix since this is a critical monitor to the health
> of the node.
>
> {noformat}
> 2018-06-04 14:28:08,539 [Container Monitor] DEBUG
> ContainersMonitorImpl.audit: Memory usage of ProcessTree 110564 for
> container-id container_e24_1526662705797_129647_01_004791: 2.1 GB of 3.5 GB
> physical memory used; 5.0 GB of 7.3 GB virtual memory used
> 2018-06-04 14:28:10,622 [Node Resource Monitor] ERROR
> yarn.YarnUncaughtExceptionHandler: Thread Thread[Node Resource
> Monitor,5,main] threw an Exception.
> java.lang.NumberFormatException: For input string: "18446744073709551596"
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
> at java.lang.Long.parseLong(Long.java:592)
> at java.lang.Long.parseLong(Long.java:631)
> at
> org.apache.hadoop.util.SysInfoLinux.readProcMemInfoFile(SysInfoLinux.java:257)
> at
> org.apache.hadoop.util.SysInfoLinux.getAvailablePhysicalMemorySize(SysInfoLinux.java:591)
> at
> org.apache.hadoop.util.SysInfoLinux.getAvailableVirtualMemorySize(SysInfoLinux.java:601)
> at
> org.apache.hadoop.yarn.util.ResourceCalculatorPlugin.getAvailableVirtualMemorySize(ResourceCalculatorPlugin.java:74)
> at
> org.apache.hadoop.yarn.server.nodemanager.NodeResourceMonitorImpl$MonitoringThread.run(NodeResourceMonitorImpl.java:193)
> 2018-06-04 14:28:30,747
> [org.apache.hadoop.util.JvmPauseMonitor$Monitor@226eba67] INFO
> util.JvmPauseMonitor: Detected pause in JVM or host machine (eg GC): pause of
> approximately 9330ms
> {noformat}
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