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Posted to user@kylin.apache.org by 曾耀武 <ze...@immomo.com> on 2017/10/17 06:08:33 UTC

Re: [外部邮件] Map input splits are 0 bytes, something is wrong!

你的表输入数据为空，检查一下你需要计算的原始数据分区是否有数据。

发件人: "liubo@fcyun.com<ma...@fcyun.com>" <li...@fcyun.com>>
答复: user <us...@kylin.apache.org>>
日期: 2017年10月17日 星期二 下午2:06
至: user <us...@kylin.apache.org>>
主题: [外部邮件] Map input splits are 0 bytes, something is wrong!

hi all,

Have you ever see the error like this? how to fix it?
what are the possible problems to check out?



#7 Step Name: Build Base Cuboid
Duration: 0.01 mins Waiting: 0 seconds

java.lang.IllegalArgumentException: Map input splits are 0 bytes, something is wrong!
        at org.apache.kylin.engine.mr.common.AbstractHadoopJob.getTotalMapInputMB(AbstractHadoopJob.java:573)
        at org.apache.kylin.engine.mr.steps.CuboidJob.run(CuboidJob.java:134)
        at org.apache.kylin.engine.mr.MRUtil.runMRJob(MRUtil.java:102)
        at org.apache.kylin.engine.mr.common.MapReduceExecutable.doWork(MapReduceExecutable.java:123)
        at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:124)
        at org.apache.kylin.job.execution.DefaultChainedExecutable.doWork(DefaultChainedExecutable.java:64)
        at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:124)
        at org.apache.kylin.job.impl.threadpool.DefaultScheduler$JobRunner.run(DefaultScheduler.java:142)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:748)
result code:2

thanks a lot ~

________________________________
liubo@fcyun.com<ma...@fcyun.com>

Re: [外部邮件] Map input splits are 0 bytes, something is wrong!

Posted by Li Yang <li...@apache.org>.
Even for empty table, there is still a file (of very small size) exists. So
a exactly zero bytes input is retreated as a system error.

On Tue, Oct 17, 2017 at 2:08 PM, 曾耀武 <ze...@immomo.com> wrote:

> 你的表输入数据为空，检查一下你需要计算的原始数据分区是否有数据。
>
> 发件人: "liubo@fcyun.com" <li...@fcyun.com>
> 答复: user <us...@kylin.apache.org>
> 日期: 2017年10月17日 星期二 下午2:06
> 至: user <us...@kylin.apache.org>
> 主题: [外部邮件] Map input splits are 0 bytes, something is wrong!
>
> hi all,
>
> Have you ever see the error like this? how to fix it?
> what are the possible problems to check out?
>
>
>
> #7 Step Name: Build Base Cuboid
> Duration: 0.01 mins Waiting: 0 seconds
>
> java.lang.IllegalArgumentException: Map input splits are 0 bytes, something is wrong!
> 	at org.apache.kylin.engine.mr.common.AbstractHadoopJob.getTotalMapInputMB(AbstractHadoopJob.java:573)
> 	at org.apache.kylin.engine.mr.steps.CuboidJob.run(CuboidJob.java:134)
> 	at org.apache.kylin.engine.mr.MRUtil.runMRJob(MRUtil.java:102)
> 	at org.apache.kylin.engine.mr.common.MapReduceExecutable.doWork(MapReduceExecutable.java:123)
> 	at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:124)
> 	at org.apache.kylin.job.execution.DefaultChainedExecutable.doWork(DefaultChainedExecutable.java:64)
> 	at org.apache.kylin.job.execution.AbstractExecutable.execute(AbstractExecutable.java:124)
> 	at org.apache.kylin.job.impl.threadpool.DefaultScheduler$JobRunner.run(DefaultScheduler.java:142)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:748)
> result code:2
>
>
> thanks a lot ~
>
> ------------------------------
> liubo@fcyun.com
>