Hi Robit, There is a JIRA issue which tracks the similar problem : DRILL-297 - Trace operator throws NPE if the configured path is not writable.
Looks like a patch has been provided to address NPE. But the patch probably has not been in the master branch yet. Regards, Jinfeng On Wed, Nov 27, 2013 at 3:40 AM, Rohit <[email protected]> wrote: > Hey Guys, > > While running test cases of Drill. I get this issue. > > java.lang.NullPointerException > at > com.google.common.base.Preconditions.checkNotNull(Preconditions.java:191) > at > org.apache.drill.exec.cache.VectorAccessibleSerializable.writeToStream(VectorAccessibleSerializable.java:144) > at > org.apache.drill.exec.cache.VectorAccessibleSerializable.writeToStreamAndRetain(VectorAccessibleSerializable.java:134) > at > org.apache.drill.exec.physical.impl.trace.TraceRecordBatch.doWork(TraceRecordBatch.java:116) > at > org.apache.drill.exec.record.AbstractSingleRecordBatch.next(AbstractSingleRecordBatch.java:63) > at > org.apache.drill.exec.physical.impl.SimpleRootExec.next(SimpleRootExec.java:70) > at > org.apache.drill.exec.client.DumpCatTest.testDumpCat(DumpCatTest.java:82) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at java.lang.reflect.Method.invoke(Method.java:606) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at java.lang.reflect.Method.invoke(Method.java:606) > at > org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) > at > org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) > > I’m running these test on Mackbook and my finding tell me that Drill tries > to make a dump at this location > /var/log/drill//00000000-0000-0000-0000-000000000000_0_0_mock-scan. It > gets this file name from getFileName() method inside TraceRecordBatch.java. > The source of prefix of this path comes from > incubator-drill/exec/java-exec/target/classes/drill-module.conf file. > > The issue here is there is no path in /var/log/drill as unlike linux there > is no folder that starts from /var. > Since this is a conf part a user should have addressed this while > configuring drill in their infrastructure. However, if he forgets to do so. > I think we should have a test case for this which asserts if “trace" > location is valid or not. Any suggestions ? > > > Regards, > Rohit. > >
