xiaodongzhang created KYLIN-3752:
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Summary:
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
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的滞后同步印象分布式构建。
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