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https://issues.apache.org/jira/browse/KYLIN-1104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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fengYu updated KYLIN-1104:
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Comment: was deleted
(was: I agree with you, However, just in case one table has some extreme big
line, We should detect this line and take the line as an invalid line(throw
Exception while deal with the line), Because it is difficult to modify just
some line in hive table and User can not go on building cube. What is more, we
should avoid every exceptions in handleErrorRecord function(such as toString
function throw exception), which will make the whole job failed... )
> Long dimension value casue ArrayIndexOutOfBoundsException
> ---------------------------------------------------------
>
> Key: KYLIN-1104
> URL: https://issues.apache.org/jira/browse/KYLIN-1104
> Project: Kylin
> Issue Type: Bug
> Reporter: fengYu
> Fix For: v1.1, v1.0
>
> Attachments: 0001-.patch
>
>
> I get ArrayIndexOutOfBoundsException while building cube, and the error is
> caused by one dimension(I think measure can not be so long) value is longer
> than 4096 bytes.
> I check source code and find the reason:
> 1、it specify max split length is 4096 when create BytesSplitter object in
> setup.
> 2、in BytesSplitter.split function which split all items in one row with
> delimiter, and using System.arraycopy(bytes, offset, split.value, 0, length);
> copy every item to a SplittedBytes object named split. and before this line ,
> it execute split.length = length; to set the split length.
> 3、while executing the copy code, it throw ArrayIndexOutOfBoundsException
> because the real item length is bigger than 4096!
> 4、in mapper function, the exception will catched and execute
> handleErrorRecord function to handle it, However, in this function it will
> call use splits again(in toString function), ArrayIndexOutOfBoundsException
> will throw again.
> 5、There is not one catch this exception, which casue the mapper execute
> failed.
> That is all my situation and analysis, I will modify source code to continue
> my job building and I will upload my patch later.
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