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https://issues.apache.org/jira/browse/KYLIN-4243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16969892#comment-16969892
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zengrui commented on KYLIN-4243:
--------------------------------

If the parameter colValLength is the length of a demension column value, we 
need to modify the corresponding parameter when new 
NoCompressedColumnReader,the parameter passed in is 
columnDataLength(dimensionMetaInfo.getDataLength), which represents the length 
of all values for this dimension.

FSInputNoCompressedColumnReader may has the same problem.

> read function in NoCompressedColumnReader is wrong.
> ---------------------------------------------------
>
>                 Key: KYLIN-4243
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4243
>             Project: Kylin
>          Issue Type: Bug
>          Components: NRT Streaming
>    Affects Versions: v3.0.0-alpha, v3.0.0-alpha2
>            Reporter: zengrui
>            Priority: Minor
>             Fix For: Future
>
>         Attachments: fix_read_bug.patch
>
>
> I found that the read function in NoCompressedColumnReader maybe wrong 
> because the parameter colValLength is the length of all this dimension 
> values, not the length of one dimension value.
> Then I try to fix it.



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