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https://issues.apache.org/jira/browse/DRILL-6877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16711315#comment-16711315
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ASF GitHub Bot commented on DRILL-6877:
---------------------------------------
arina-ielchiieva commented on a change in pull request #1560: DRILL-6877: NPE
when starting Drill on Windows
URL: https://github.com/apache/drill/pull/1560#discussion_r239355853
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/server/Drillbit.java
##########
@@ -374,17 +374,22 @@ public void run () {
}
private void pollShutdown(Drillbit drillbit) throws IOException,
InterruptedException {
- final Path drillPidDirPath =
FileSystems.getDefault().getPath(System.getenv("DRILL_PID_DIR"));
- final String gracefulFileName = System.getenv("GRACEFUL_SIGFILE");
+ final String drillHome = System.getenv("DRILL_HOME");
+ final String gracefulFile = System.getenv("GRACEFUL_SIGFILE");
+ if (drillHome == null || gracefulFile == null) {
+ logger.warn("Cannot access graceful file. Graceful shutdown from
command line will not be supported.");
+ return;
+ }
+ final Path drillHomePath = Paths.get(drillHome);
Review comment:
1. We might check if `drillHomePath` actually exists and reachable and issue
a warning rather than fail if something is going wrong. Or what will happen if
`DRILL_HOME` is incorrectly set?
2. Please update PR and commit error description, it turned out NPE exists
on other systems as well (just remove `on Windows part`).
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> NPE when starting Drill
> -----------------------
>
> Key: DRILL-6877
> URL: https://issues.apache.org/jira/browse/DRILL-6877
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.15.0
> Reporter: Arina Ielchiieva
> Assignee: Venkata Jyothsna Donapati
> Priority: Blocker
> Fix For: 1.15.0
>
>
> Regression after DRILL-6039, Drill start with NPE:
> {noformat}
> >sqlline.bat -u "jdbc:drill:zk=local"
> DRILL_ARGS - " -u jdbc:drill:zk=local"
> Calculating HADOOP_CLASSPATH ...
> HBASE_HOME not detected...
> Calculating Drill classpath...
> Exception in thread "Thread-20" java.lang.NullPointerException
> at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:98)
> at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:77)
> at sun.nio.fs.WindowsPath.parse(WindowsPath.java:94)
> at sun.nio.fs.WindowsFileSystem.getPath(WindowsFileSystem.java:255)
> at
> org.apache.drill.exec.server.Drillbit$GracefulShutdownThread.pollShutdown(Drillbit.java:377)
> at
> org.apache.drill.exec.server.Drillbit$GracefulShutdownThread.run(Drillbit.java:368)
> Apache Drill 1.15.0-SNAPSHOT
> "JSON ain't no thang."
> {noformat}
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