presto_head_stacktrace

2014-05-01T19:20:46.239+0000	ERROR	SplitRunner-8-78	com.facebook.presto.execution.TaskExecutor	Error processing Split 20140501_192032_00002_disgk.1.0-0 (start = 1398972045653, wall = 580 ms, cpu = 0 ms, calls = 1)
java.lang.LinkageError: loader constraint violation: loader (instance of com/facebook/presto/server/PluginManager$SimpleChildFirstClassLoader) previously initiated loading for a different type with name "io/airlift/slice/Slice"
	at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.7.0_12-ea]
	at java.lang.ClassLoader.defineClass(ClassLoader.java:791) ~[na:1.7.0_12-ea]
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.7.0_12-ea]
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) ~[na:1.7.0_12-ea]
	at java.net.URLClassLoader.access$100(URLClassLoader.java:71) ~[na:1.7.0_12-ea]
	at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[na:1.7.0_12-ea]
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[na:1.7.0_12-ea]
	at java.security.AccessController.doPrivileged(Native Method) ~[na:1.7.0_12-ea]
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[na:1.7.0_12-ea]
	at com.facebook.presto.server.PluginManager$SimpleChildFirstClassLoader.loadClass(PluginManager.java:333) ~[classes/:na]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356) ~[na:1.7.0_12-ea]
	at com.facebook.presto.hive.ColumnarBinaryHiveRecordCursor.<init>(ColumnarBinaryHiveRecordCursor.java:158) ~[na:na]
	at com.facebook.presto.hive.ColumnarBinaryHiveRecordCursorProvider.createHiveRecordCursor(ColumnarBinaryHiveRecordCursorProvider.java:35) ~[na:na]
	at com.facebook.presto.hive.HiveRecordSet.cursor(HiveRecordSet.java:115) ~[na:na]
	at com.facebook.presto.hive.HiveRecordSet.cursor(HiveRecordSet.java:57) ~[na:na]
	at com.facebook.presto.spi.classloader.ClassLoaderSafeRecordSet.cursor(ClassLoaderSafeRecordSet.java:48) ~[classes/:na]
	at com.facebook.presto.operator.RecordProjectOperator.<init>(RecordProjectOperator.java:45) ~[classes/:na]
	at com.facebook.presto.split.RecordSetDataStreamProvider.createNewDataStream(RecordSetDataStreamProvider.java:40) ~[classes/:na]
	at com.facebook.presto.split.DataStreamManager.createNewDataStream(DataStreamManager.java:58) ~[classes/:na]
	at com.facebook.presto.operator.AbstractScanFilterAndProjectOperator.addSplit(AbstractScanFilterAndProjectOperator.java:95) ~[classes/:na]
	at com.facebook.presto.operator.Driver.processNewSource(Driver.java:251) ~[classes/:na]
	at com.facebook.presto.operator.Driver.processNewSources(Driver.java:216) ~[classes/:na]
	at com.facebook.presto.operator.Driver.access$300(Driver.java:52) ~[classes/:na]
	at com.facebook.presto.operator.Driver$DriverLockResult.close(Driver.java:491) ~[classes/:na]
	at com.facebook.presto.operator.Driver.updateSource(Driver.java:194) ~[classes/:na]
	at com.facebook.presto.execution.SqlTaskExecution$DriverSplitRunnerFactory.createDriver(SqlTaskExecution.java:580) ~[classes/:na]
	at com.facebook.presto.execution.SqlTaskExecution$DriverSplitRunnerFactory.access$1700(SqlTaskExecution.java:547) ~[classes/:na]
	at com.facebook.presto.execution.SqlTaskExecution$DriverSplitRunner.processFor(SqlTaskExecution.java:668) ~[classes/:na]
	at com.facebook.presto.execution.TaskExecutor$PrioritizedSplitRunner.process(TaskExecutor.java:443) ~[classes/:na]
	at com.facebook.presto.execution.TaskExecutor$Runner.run(TaskExecutor.java:577) ~[classes/:na]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [na:1.7.0_12-ea]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [na:1.7.0_12-ea]
	at java.lang.Thread.run(Thread.java:722) [na:1.7.0_12-ea]