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Posted to issues@kylin.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/01/03 07:05:00 UTC
[jira] [Commented] (KYLIN-3752) Cube构建时在第一步发生NullPointerException异常：org.apache.kylin.source.hive.CreateFlatHiveTableStep.getCubeSpecificConfig(CreateFlatHiveTableStep.java:92)
[ https://issues.apache.org/jira/browse/KYLIN-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16732717#comment-16732717 ]
ASF GitHub Bot commented on KYLIN-3752:
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shaofengshi commented on pull request #427: KYLIN-3752 Increase broadcaster's concurrency to avoid exceptions
URL: https://github.com/apache/kylin/pull/427
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> Cube构建时在第一步发生NullPointerException异常：org.apache.kylin.source.hive.CreateFlatHiveTableStep.getCubeSpecificConfig(CreateFlatHiveTableStep.java:92)
> -----------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: KYLIN-3752
> URL: https://issues.apache.org/jira/browse/KYLIN-3752
> Project: Kylin
> Issue Type: Bug
> Components: Job Engine
> Affects Versions: v2.5.0
> Reporter: xiaodongzhang
> Priority: Blocker
>
> 异常如下：
> 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:178) at org.apache.kylin.job.impl.threadpool.DistributedScheduler$JobRunner.run(DistributedScheduler.java:111) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.kylin.job.exception.ExecuteException: java.lang.NullPointerException at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:178) at org.apache.kylin.job.execution.DefaultChainedExecutable.doWork(DefaultChainedExecutable.java:69) at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:163) ... 4 more Caused by: java.lang.NullPointerException at org.apache.kylin.source.hive.CreateFlatHiveTableStep.getCubeSpecificConfig(CreateFlatHiveTableStep.java:92) at org.apache.kylin.source.hive.CreateFlatHiveTableStep.doWork(CreateFlatHiveTableStep.java:97) at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:163) ... 6 more
> 具体原因：默认配置只有一个线程来串行处理广播事件，当集群节点达到十个左右时，一个事件的同步平均耗时一分钟左右，因此会导致Table、Model、Cube的滞后同步影响分布式构建。
> 解决办法：[https://github.com/apache/kylin/pull/427]
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