[BEAM-2269] Apex Runner unable to launch local cluster on Windows

• Type: Bug
• Status: Resolved
• Priority: P3
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: Missing
• Component/s: runner-apex
• Environment: Windows 2016 against Apache Beam 2.0.0 RC2; JDK 8u131; Maven 3.5.0
• Assignee: Unassigned
• Reporter: Luke Cwik
• Created: 11/May/17 22:52
• Updated: 13/Jan/22 21:51
• Resolved: 15/May/21 17:55

Description

Command:

mvn compile exec:java -P apex-runner -D exec.mainClass=beamrc.WordCount -D exec.args="--runner=ApexRunner --output=output/apex-counts"

Fails with exception:

java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:293)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.RuntimeException: Error creating local cluster
        at org.apache.apex.engine.EmbeddedAppLauncherImpl.getController(EmbeddedAppLauncherImpl.java:122)
        at org.apache.apex.engine.EmbeddedAppLauncherImpl.launchApp(EmbeddedAppLauncherImpl.java:71)
        at org.apache.apex.engine.EmbeddedAppLauncherImpl.launchApp(EmbeddedAppLauncherImpl.java:46)
        at org.apache.beam.runners.apex.ApexRunner.run(ApexRunner.java:175)
        at org.apache.beam.runners.apex.ApexRunner.run(ApexRunner.java:73)
        at org.apache.beam.sdk.Pipeline.run(Pipeline.java:295)
        at org.apache.beam.sdk.Pipeline.run(Pipeline.java:281)
        at beamrc.WordCount.main(WordCount.java:184)
        ... 6 more
Caused by: java.lang.NullPointerException
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1012)
        at org.apache.hadoop.util.Shell.runCommand(Shell.java:482)
        at org.apache.hadoop.util.Shell.run(Shell.java:455)
        at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:715)
        at org.apache.hadoop.util.Shell.execCommand(Shell.java:808)
        at org.apache.hadoop.util.Shell.execCommand(Shell.java:791)
        at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:656)
        at org.apache.hadoop.fs.RawLocalFileSystem.create(RawLocalFileSystem.java:298)
        at org.apache.hadoop.fs.FileSystem.primitiveCreate(FileSystem.java:1014)
        at org.apache.hadoop.fs.DelegateToFileSystem.createInternal(DelegateToFileSystem.java:85)
        at org.apache.hadoop.fs.ChecksumFs$ChecksumFSOutputSummer.<init>(ChecksumFs.java:347)
        at org.apache.hadoop.fs.ChecksumFs.createInternal(ChecksumFs.java:394)
        at org.apache.hadoop.fs.AbstractFileSystem.create(AbstractFileSystem.java:577)
        at org.apache.hadoop.fs.FileContext$3.next(FileContext.java:680)
        at org.apache.hadoop.fs.FileContext$3.next(FileContext.java:676)
        at org.apache.hadoop.fs.FSLinkResolver.resolve(FSLinkResolver.java:90)
        at org.apache.hadoop.fs.FileContext.create(FileContext.java:676)
        at com.datatorrent.common.util.AsyncFSStorageAgent.copyToHDFS(AsyncFSStorageAgent.java:119)
        at com.datatorrent.common.util.AsyncFSStorageAgent.flush(AsyncFSStorageAgent.java:156)
        at com.datatorrent.stram.plan.physical.PhysicalPlan.initCheckpoint(PhysicalPlan.java:1230)
        at com.datatorrent.stram.plan.physical.PhysicalPlan.<init>(PhysicalPlan.java:495)
        at com.datatorrent.stram.StreamingContainerManager.<init>(StreamingContainerManager.java:425)
        at com.datatorrent.stram.StreamingContainerManager.<init>(StreamingContainerManager.java:413)
        at com.datatorrent.stram.StramLocalCluster.<init>(StramLocalCluster.java:314)
        at org.apache.apex.engine.EmbeddedAppLauncherImpl.getController(EmbeddedAppLauncherImpl.java:120)
        ... 13 more

If Apex doesn't support Windows for local cluster execution then this should either be closed as an unsupported use case or changed to be a feature request.