[jira] [Resolved] (KYLIN-3752) NullPointerException in the first cubing step：org.apache.kylin.source.hive.CreateFlatHiveTableStep.getCubeSpecificConfig(CreateFlatHiveTableStep.java:92)

["Shaofeng SHI (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shaofeng SHI resolved KYLIN-3752.
---------------------------------
    Resolution: Fixed

Xiaodong, thank you for contributing Kylin!

> NullPointerException in the first cubing step：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
>            Assignee: xiaodongzhang
>            Priority: Blocker
>             Fix For: v2.6.0
>
>
> 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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