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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/09/06 16:56:00 UTC
[jira] [Work logged] (BEAM-10661) Java quickstart using Gradle
doesn't work
[ https://issues.apache.org/jira/browse/BEAM-10661?focusedWorklogId=479416&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-479416 ]
ASF GitHub Bot logged work on BEAM-10661:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 06/Sep/20 16:55
Start Date: 06/Sep/20 16:55
Worklog Time Spent: 10m
Work Description: SergiyKolesnikov opened a new pull request #12778:
URL: https://github.com/apache/beam/pull/12778
getPropety() will return the empty string if "exec.args" property is not
set. This prevents the NullPointerException.
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 479416)
Remaining Estimate: 0h
Time Spent: 10m
> Java quickstart using Gradle doesn't work
> -----------------------------------------
>
> Key: BEAM-10661
> URL: https://issues.apache.org/jira/browse/BEAM-10661
> Project: Beam
> Issue Type: Bug
> Components: website
> Reporter: Marcus Truscello
> Priority: P3
> Labels: documentation, quickstart
> Time Spent: 10m
> Remaining Estimate: 0h
>
> As written, the Java quickstart using Gradle doesn't work. The issue is that the {{execute}} task created in step 2 makes it so that the {{exec.args}} define is required for every task (including build!), otherwise a NullPointerException is thrown.
>
> Example output:
>
> {code:java}
> ~/word-count-beam$ gradle build
> FAILURE: Build failed with an exception.
> * Where:
> Build file '/Users/username/word-count-beam/build.gradle' line: 56
> * What went wrong:
> A problem occurred evaluating root project 'word-count-beam'.
> > java.lang.NullPointerException (no error message)
> * Try:
> Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
> * Get more help at https://help.gradle.org
> BUILD FAILED in 582ms
> {code}
>
> Where line 56 of my build.gradle file is the split command in the execute task:
> {code:java}
> 52 task execute (type:JavaExec) {
> 53 main = System.getProperty("mainClass")
> 54 classpath = sourceSets.main.runtimeClasspath
> 55 systemProperties System.getProperties()
> 56 args System.getProperty("exec.args").split()
> 57 }
> {code}
>
> Running with an empty exec.args fixes the issue:
> {code:java}
> ~/word-count-beam$ gradle build -Dexec.args=""
> Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
> Use '--warning-mode all' to show the individual deprecation warnings.
> See https://docs.gradle.org/6.5.1/userguide/command_line_interface.html#sec:command_line_warnings
> BUILD SUCCESSFUL in 782ms
> 4 actionable tasks: 4 up-to-date
> {code}
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