[jira] [Issue Comment Deleted] (KYLIN-2192) More Robust Global Dictionary

["Shaofeng SHI (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-2192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shaofeng SHI updated KYLIN-2192:
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    Comment: was deleted

(was: For backward compitable, we couldn't change the decoding logic for 0xff, 0xffff, 0xffffff, 0xffffffff. 0~Integer.MAX_VALUE is encough for most dimensions; do you have the case beyond that? If need to expand the scope, just *2 is insufficient, may have to use long type. )

> More Robust Global Dictionary
> -----------------------------
>
>                 Key: KYLIN-2192
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2192
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Job Engine
>    Affects Versions: v1.5.4.1
>            Reporter: Yerui Sun
>            Assignee: Yerui Sun
>             Fix For: v1.6.0
>
>         Attachments: KYLIN-2192.2.patch
>
>
> Global dictionary have been released over 2 months, I've received some feedbacks and bug reports. Here's the patch to make global dictionary more robust, including some functional improvements.
> * Break through 255 bytes limitation for value, but still recommend value length less than 8K, avoiding stack overflow error;
> * Fix 'Value not exists' or stack overflow error when dict size is larger than 1GB, the root cause is similar with KYLIN-1834; A check tool also provided for check corrupted or not of existing dict data;
> * Support parallel dictionary building in one job server, used for parallel segments building;



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