[ACCUMULO-4350] ShellServerIT fails to load RowSampler class

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Cannot Reproduce
• Component/s: test
• Assignee: Unassigned
• Reporter: Josh Elser
• Created: 21/Jun/16 04:51
• Updated: 16/Apr/19 19:07
• Resolved: 16/Apr/19 19:07

Description

Running JAVA_HOME=$(/usr/libexec/java_home -v1.8) mvn clean verify -Dit.test=ShellServerIT -Dtest=foobar -DfailIfNoTests=false:

I can see the following which is causing ShellServerIT to never exit:

2016-06-21 00:48:23,675 [impl.ThriftTransportPool] WARN : Thread "Time-limited test" stuck on IO to host.domain:61175 (0) for at least 120324 ms

Looking in the TabletServer logs for MAC

2016-06-21 00:48:50,019 [tablet.Compactor] ERROR: java.lang.ClassNotFoundException: org.apache.accumulo.core.sample.RowSampler
java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.accumulo.core.sample.RowSampler
	at org.apache.accumulo.core.sample.impl.SamplerFactory.newSampler(SamplerFactory.java:45)
	at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:91)
	at org.apache.accumulo.core.file.DispatchingFileFactory.openWriter(DispatchingFileFactory.java:74)
	at org.apache.accumulo.core.file.FileOperations$OpenWriterOperation.build(FileOperations.java:331)
	at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:201)
	at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1850)
	at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:1967)
	at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
	at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.apache.accumulo.core.sample.RowSampler
	at org.apache.commons.vfs2.impl.VFSClassLoader.findClass(VFSClassLoader.java:178)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.loadClass(AccumuloVFSClassLoader.java:110)
	at org.apache.accumulo.core.sample.impl.SamplerFactory.newSampler(SamplerFactory.java:36)
	... 12 more
2016-06-21 00:48:50,019 [tablet.Tablet] ERROR: MajC Unexpected exception, extent = h<<
java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.accumulo.core.sample.RowSampler
	at org.apache.accumulo.core.sample.impl.SamplerFactory.newSampler(SamplerFactory.java:45)
	at org.apache.accumulo.core.file.rfile.RFileOperations.openWriter(RFileOperations.java:91)
	at org.apache.accumulo.core.file.DispatchingFileFactory.openWriter(DispatchingFileFactory.java:74)
	at org.apache.accumulo.core.file.FileOperations$OpenWriterOperation.build(FileOperations.java:331)
	at org.apache.accumulo.tserver.tablet.Compactor.call(Compactor.java:201)
	at org.apache.accumulo.tserver.tablet.Tablet._majorCompact(Tablet.java:1850)
	at org.apache.accumulo.tserver.tablet.Tablet.majorCompact(Tablet.java:1967)
	at org.apache.accumulo.tserver.tablet.CompactionRunner.run(CompactionRunner.java:44)
	at org.apache.htrace.wrappers.TraceRunnable.run(TraceRunnable.java:57)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.apache.accumulo.core.sample.RowSampler
	at org.apache.commons.vfs2.impl.VFSClassLoader.findClass(VFSClassLoader.java:178)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader.loadClass(AccumuloVFSClassLoader.java:110)
	at org.apache.accumulo.core.sample.impl.SamplerFactory.newSampler(SamplerFactory.java:36)
	... 12 more