[jira] [Assigned] (GEODE-6253) Sampling of VM stats generates fatal log message and skips remaining stats in sample

["Kirk Lund (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GEODE-6253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirk Lund reassigned GEODE-6253:
--------------------------------

    Assignee: Kirk Lund

> Sampling of VM stats generates fatal log message and skips remaining stats in sample
> ------------------------------------------------------------------------------------
>
>                 Key: GEODE-6253
>                 URL: https://issues.apache.org/jira/browse/GEODE-6253
>             Project: Geode
>          Issue Type: Bug
>          Components: statistics
>            Reporter: Kirk Lund
>            Assignee: Kirk Lund
>            Priority: Major
>
> I've seen several bugs filed for this and then fixed by using addIgnoredException.
> Unfortunately, this means that quite a few stats that are refreshed after line 624 of VMStats50 are not refreshed. Also it seems silly to keep adding addIgnoredException to lots of tests.
> I think the product code should be changed to catch this and workaround it (skip the sample and move on to the next stats). At most, this should be a `warning` or `info` level statement:
> {noformat}
> [fatal 2018/11/12 19:50:18.909 UTC <StatSampler> tid=15055] committed = 538968064 should be < max = 536870912
> java.lang.IllegalArgumentException: committed = 538968064 should be < max = 536870912
> 	at java.management/java.lang.management.MemoryUsage.<init>(MemoryUsage.java:166)
> 	at java.management/sun.management.MemoryImpl.getMemoryUsage0(Native Method)
> 	at java.management/sun.management.MemoryImpl.getHeapMemoryUsage(MemoryImpl.java:71)
> 	at org.apache.geode.internal.stats50.VMStats50.refresh(VMStats50.java:624)
> 	at org.apache.geode.internal.statistics.HostStatSampler.sampleSpecialStats(HostStatSampler.java:542)
> 	at org.apache.geode.internal.statistics.HostStatSampler.run(HostStatSampler.java:215)
> 	at java.base/java.lang.Thread.run(Thread.java:834)
> {noformat}



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