[SOLR-10362] "Memory Pool not found" error when reporting JVM metrics

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.5, 7.0
• Fix Version/s: 6.6, 7.0
• Component/s: metrics
• Assignee: Andrzej Bialecki
• Reporter: Andrzej Bialecki
• Created: 24/Mar/17 20:41
• Updated: 08/Jun/19 15:30
• Resolved: 27/Mar/17 20:58

Description

These test failures are likely caused by a JVM bug. We should catch and work around it to be able report other existing metrics:

https://jenkins.thetaphi.de/job/Lucene-Solr-6.x-Linux/3138/testReport/junit/org.apache.solr.handler.admin/MetricsHandlerTest/testCompact/

java.lang.InternalError: Memory Pool not found
	at __randomizedtesting.SeedInfo.seed([8F4813A324434093:A1485FF45CBE4A6C]:0)
	at sun.management.MemoryPoolImpl.getUsage0(Native Method)
	at sun.management.MemoryPoolImpl.getUsage(MemoryPoolImpl.java:96)
	at com.codahale.metrics.jvm.MemoryUsageGaugeSet$18.getValue(MemoryUsageGaugeSet.java:177)
	at com.codahale.metrics.jvm.MemoryUsageGaugeSet$18.getValue(MemoryUsageGaugeSet.java:174)
	at org.apache.solr.util.stats.MetricUtils.convertGauge(MetricUtils.java:215)
	at org.apache.solr.util.stats.MetricUtils.lambda$toMaps$4(MetricUtils.java:142)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.TreeMap$KeySpliterator.forEachRemaining(TreeMap.java:2746)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
	at org.apache.solr.util.stats.MetricUtils.toMaps(MetricUtils.java:135)
	at org.apache.solr.util.stats.MetricUtils.toNamedList(MetricUtils.java:117)
	at org.apache.solr.handler.admin.MetricsHandler.handleRequestBody(MetricsHandler.java:85)
	at org.apache.solr.handler.admin.MetricsHandlerTest.testCompact(MetricsHandlerTest.java:160)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

See here for a possible explanation (thanks Hoss!): https://bugs.openjdk.java.net/browse/JDK-8025089