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https://issues.apache.org/jira/browse/KYLIN-3836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16781241#comment-16781241
]
ASF subversion and git services commented on KYLIN-3836:
--------------------------------------------------------
Commit 7ca653e3be25394a380bd3cb159410099a111584 in kylin's branch
refs/heads/2.5.x from chao long
[ https://gitbox.apache.org/repos/asf?p=kylin.git;h=7ca653e ]
KYLIN-3836 fix Kylin StringUtil.join() may cause NPE if iterator is empty
> Kylin StringUtil.join() may cause NPE if iterator is empty
> ----------------------------------------------------------
>
> Key: KYLIN-3836
> URL: https://issues.apache.org/jira/browse/KYLIN-3836
> Project: Kylin
> Issue Type: Bug
> Reporter: Chao Long
> Assignee: Chao Long
> Priority: Major
> Fix For: v2.6.1
>
>
> {code}
> public static String join(Iterable<String> parts, String separator) {
> StringBuilder buf = new StringBuilder();
> Iterator<String> iterator = parts.iterator();
> if (iterator == null || (!iterator.hasNext())) {
> return null;
> }
> {code}
> org.apache.kylin.job.exception.ExecuteException:
> org.apache.kylin.job.exception.ExecuteException:
> java.lang.NullPointerException
> at
> org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:183)
> at
> org.apache.kylin.job.impl.threadpool.DefaultScheduler$JobRunner.run(DefaultScheduler.java:114)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: org.apache.kylin.job.exception.ExecuteException:
> java.lang.NullPointerException
> at
> org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:183)
> at
> org.apache.kylin.job.execution.DefaultChainedExecutable.doWork(DefaultChainedExecutable.java:71)
> at
> org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:168)
> ... 4 more
> Caused by: java.lang.NullPointerException
> at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:191)
> at com.google.common.base.Splitter.split(Splitter.java:383)
> at org.apache.kylin.common.util.StringUtil.splitAndTrim(StringUtil.java:181)
> at
> org.apache.kylin.source.hive.GarbageCollectionStep.getIntermediateTables(GarbageCollectionStep.java:95)
> at
> org.apache.kylin.source.hive.GarbageCollectionStep.cleanUpIntermediateFlatTable(GarbageCollectionStep.java:62)
> at
> org.apache.kylin.source.hive.GarbageCollectionStep.doWork(GarbageCollectionStep.java:48)
> at
> org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:168)
> ... 6 more
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