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From "Scott Wegner (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-2883) Poor error message when forgetting to specify a Datastore project.
Date Mon, 11 Sep 2017 17:14:00 GMT
Scott Wegner created BEAM-2883:
----------------------------------

             Summary: Poor error message when forgetting to specify a Datastore project.
                 Key: BEAM-2883
                 URL: https://issues.apache.org/jira/browse/BEAM-2883
             Project: Beam
          Issue Type: Bug
          Components: sdk-java-gcp
            Reporter: Scott Wegner
            Assignee: Chamikara Jayalath
            Priority: Minor


From: https://stackoverflow.com/questions/46155781/mojoexecutionexception-while-writing-to-bigquery

A Beam user using DatastoreIO.v1() encountered an error because their pipeline didn't specify
a Datastore project via DatastoreIO.v1().read().withProject(..). But the error was not very
informative. Even when referencing the source code, it is difficult to trace through the code
due to use of AutoValue and ValueProvider.

The error was:

[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.4.0:java (default-cli)
on project pubsub-bigquery: An exception occured while executing the Java class. null: InvocationTargetException:
projectId -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.4.0:java
(default-cli) on project pubsub-bigquery: An exception occured while executing the Java class.
null
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
    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.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: An exception occured while executing
the Java class. null
    at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:345)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
    ... 20 more
Caused by: 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$1.run(ExecJavaMojo.java:293)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: projectId
    at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:787)
    at org.apache.beam.sdk.io.gcp.datastore.DatastoreV1$Read.validate(DatastoreV1.java:624)
    at org.apache.beam.sdk.Pipeline$ValidateVisitor.enterCompositeTransform(Pipeline.java:610)
    at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit(TransformHierarchy.java:590)
    at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit(TransformHierarchy.java:594)
    at org.apache.beam.sdk.runners.TransformHierarchy$Node.access$500(TransformHierarchy.java:276)
    at org.apache.beam.sdk.runners.TransformHierarchy.visit(TransformHierarchy.java:210)
    at org.apache.beam.sdk.Pipeline.traverseTopologically(Pipeline.java:440)
    at org.apache.beam.sdk.Pipeline.validate(Pipeline.java:552)
    at org.apache.beam.sdk.Pipeline.run(Pipeline.java:296)
    at org.apache.beam.sdk.Pipeline.run(Pipeline.java:283)
    at org.druk.twc.tobq.DsToBQ.main(DsToBQ.java:126)
    ... 6 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following
articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException



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