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Posted to issues@kylin.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/12/26 12:03:00 UTC
[jira] [Commented] (KYLIN-3742) DataRequest fail to deserialized
[ https://issues.apache.org/jira/browse/KYLIN-3742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16729011#comment-16729011 ]
ASF GitHub Bot commented on KYLIN-3742:
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hit-lacus commented on pull request #417: KYLIN-3742 Fix DataRequest for NPE and add some javadoc
URL: https://github.com/apache/kylin/pull/417
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> DataRequest fail to deserialized
> ---------------------------------
>
> Key: KYLIN-3742
> URL: https://issues.apache.org/jira/browse/KYLIN-3742
> Project: Kylin
> Issue Type: Bug
> Components: Streaming
> Reporter: XiaoXiang Yu
> Assignee: XiaoXiang Yu
> Priority: Critical
> Attachments: image-2018-12-26-19-25-31-341.png, image-2018-12-26-19-26-44-418.png, image-2018-12-26-19-27-15-397.png, image-2018-12-26-19-29-13-404.png, image-2018-12-26-19-38-10-451.png, image-2018-12-26-19-39-19-039.png, image-2018-12-26-19-42-10-589.png
>
>
> DataRequest send to Streaming Receiver is cannot be deserialized successfully because of
> ParameterDesc's equals method throw a NPE for field null +_colRef._+
> 1. This Receiver Server 's error log.
> !image-2018-12-26-19-25-31-341.png!
>
>
> 2. This the request send by query server. It is a Normal JSON.
> !image-2018-12-26-19-42-10-589.png!
> !image-2018-12-26-19-29-13-404.png!
>
>
> 3. Spring MVC will try to deserialized json string into DataRequest. And filed mertics of DataRequest it is a Set.
>
> !image-2018-12-26-19-38-10-451.png!
>
> 4. HashSet use equal method to distinct entry. But equals method will throw NPE.
>
> !image-2018-12-26-19-39-19-039.png!
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