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https://issues.apache.org/jira/browse/KYLIN-2672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16342468#comment-16342468
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kangkaisen commented on KYLIN-2672:
-----------------------------------
The basic idea for this patch is adding a new api for cube migration and only
reloading necessary cacheļ¼
not any clear operation.
The metadata reloading must be by the follwing order:
- table
- project
- model
- cube desc
- cube instance
- project l2 cache
The reason please refer the code comment.
The meaning for this patch is improving the Kylin QueryServer availability and
Fixing the "Table not found" bug when migrate cube.
> Only clean necessary cache for CubeMigrationCLI
> -----------------------------------------------
>
> Key: KYLIN-2672
> URL: https://issues.apache.org/jira/browse/KYLIN-2672
> Project: Kylin
> Issue Type: Improvement
> Components: Tools, Build and Test
> Affects Versions: v2.0.0
> Reporter: kangkaisen
> Assignee: kangkaisen
> Priority: Major
> Fix For: v2.3.0
>
> Attachments: KYLIN-2672.patch
>
>
> Currently, we simply clear ALL cache in CubeMigrationCLI. which will make a
> few of queries slower in prod env when we have many tables, models, cubes and
> migrate cube often.
> So, we could only clean necessary cache for CubeMigrationCLI.
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