Usman Shahid created DRILL-5280:
-----------------------------------
Summary: Error during udf area creation due to
NullPointerException during drillbit startup
Key: DRILL-5280
URL: https://issues.apache.org/jira/browse/DRILL-5280
Project: Apache Drill
Issue Type: Bug
Environment: Windows 7 64-bit
Java(TM) SE Runtime Environment (build 1.8.0_111-b14)
Reporter: Usman Shahid
I tried to start drill in distributed mode but ran into this:
`Exception in thread "main"
org.apache.drill.exec.exception.DrillbitStartupException: Failure during
initial startup of Drillbit.
at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:296)
at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:272)
at org.apache.drill.exec.server.Drillbit.main(Drillbit.java:268)
Caused by: org.apache.drill.common.exceptions.DrillRuntimeException: Error
during udf area creation [/C:/Users/Usman.Shahid/drill/udf/registry] on file
system [file:///]
at
org.apache.drill.common.exceptions.DrillRuntimeException.format(DrillRuntimeException.java:49)
at
org.apache.drill.exec.expr.fn.registry.RemoteFunctionRegistry.createArea(RemoteFunctionRegistry.java:251)
at
org.apache.drill.exec.expr.fn.registry.RemoteFunctionRegistry.prepareAreas(RemoteFunctionRegistry.java:208)
at
org.apache.drill.exec.expr.fn.registry.RemoteFunctionRegistry.init(RemoteFunctionRegistry.java:105)
at org.apache.drill.exec.server.Drillbit.run(Drillbit.java:126)
at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:292)
... 2 more
Caused by: java.lang.NullPointerException
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1012)
at org.apache.hadoop.util.Shell.runCommand(Shell.java:483)
at org.apache.hadoop.util.Shell.run(Shell.java:456)
at
org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:722)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:815)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:798)
at org.apache.hadoop.fs.FileUtil.execCommand(FileUtil.java:1097)
at
org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:654)
at
org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.getPermission(RawLocalFileSystem.java:629)
at
org.apache.drill.exec.expr.fn.registry.RemoteFunctionRegistry.createArea(RemoteFunctionRegistry.java:232)
... 6 more
`
The complete stack trace for the `NullPointerException` is:
`
Thread [main] (Suspended (exception NullPointerException))
owns: Object (id=57)
ProcessBuilder.start() line: 1012
Shell$ShellCommandExecutor(Shell).runCommand() line: 483
Shell$ShellCommandExecutor(Shell).run() line: 456
Shell$ShellCommandExecutor.execute() line: 722
Shell.execCommand(Map<String,String>, String[], long) line: 815
Shell.execCommand(String...) line: 798
FileUtil.execCommand(File, String...) line: 1097
RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo()
line: 654
RawLocalFileSystem$DeprecatedRawLocalFileStatus.getPermission() line:
629
RemoteFunctionRegistry.createArea(FileSystem, String, String) line: 232
RemoteFunctionRegistry.prepareAreas(DrillConfig) line: 208
RemoteFunctionRegistry.init(DrillConfig, PersistentStoreProvider,
ClusterCoordinator) line: 105
Drillbit.run() line: 126
Drillbit.start(DrillConfig, RemoteServiceSet) line: 292
Drillbit.start(StartupOptions) line: 272
Drillbit.main(String[]) line: 268
`
To further pinpoint it, the call to `Shell.getGetPermissionCommand()` at
`RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo() ` returns
a `new String[] { WINUTILS, "ls", "-F" }`. It's this `WINUTILS` that's null
because my system doesn't have hadoop installed (nor do I intend to use it).
The shortest workaround to this is to have a `HADOOP_HOME` environment variable
pointing towards the `winutils.exe` bin directory.
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