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https://issues.apache.org/jira/browse/KYLIN-3731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16728688#comment-16728688
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Chao Long commented on KYLIN-3731:
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I see, you convert the array type column(*_impression_click_id_*) to
string(*_product_id_*) and keep impression_click_id in the hive view.
Do you send query with _*impression_click_id*_ in kylin?
If you just query with *_product_id_*, I think you can remove
*_impression_click_id_* from the hive view, so kylin will not load array type
data.
If you do query with *_impression_click_id_*, please let me know how the query
like.
To fix "Unsupported data type array<string>" exception, just need to skip
segment pruning when the column data type is array.
> java.lang.IllegalArgumentException: Unsupported data type array<string> at
> ---------------------------------------------------------------------------
>
> Key: KYLIN-3731
> URL: https://issues.apache.org/jira/browse/KYLIN-3731
> Project: Kylin
> Issue Type: Bug
> Components: Job Engine
> Affects Versions: v2.5.1
> Reporter: HongBo Dai
> Assignee: Chao Long
> Priority: Critical
> Labels: build
> Fix For: v2.5.1
>
> Attachments: error of kylin.txt, image-2018-12-20-10-59-04-060.png,
> screenshot-1.png, screenshot-2.png, screenshot-3.png, screenshot-4.png
>
>
> As kylin was recently upgraded from 2.3 to 2.5.1, its data type of array
> metadata was found to be unsupported and the following exception occurred
> "java. lang. IllegalArgumentException: Unsupported data type array", are in
> kylin2.3 hive data storage array before running this type is no problem,
> there is the lead in building a cube when the third step is as follows
> "org. apache. kylin. engine. mr. Exception. MapReduceException: no counters
> for the job", could you tell me how to solve the problem without changing
> data structure situation now? please look up attachment.
> !image-2018-12-20-10-59-04-060.png!
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