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https://issues.apache.org/jira/browse/TAJO-1803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14725101#comment-14725101
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ASF GitHub Bot commented on TAJO-1803:
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Github user jinossy commented on the pull request:
https://github.com/apache/tajo/pull/714#issuecomment-136656394
+1 LGTM
> Use in-memory derby as the default catalog for unit tests
> ---------------------------------------------------------
>
> Key: TAJO-1803
> URL: https://issues.apache.org/jira/browse/TAJO-1803
> Project: Tajo
> Issue Type: Task
> Components: Unit Test
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Fix For: 0.11.0
>
>
> We are currently using MemStore which is designed to provide the same
> interface with AbstractDBStore. This incurs two problems.
> * The major problem is that AbstractDBStore is not tested properly by unit
> testing. The logic to access catalog is separated into MemStore and
> AbstractDBStore, and only MemStore is tested.
> * We have to implement both AbstractDBStore and MemStore whenever we modify
> the catalog interface even though MemStore is used only in unit testing. This
> is an unnecessary burden to developers.
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