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https://issues.apache.org/jira/browse/CALCITE-5623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17707117#comment-17707117
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Julian Hyde commented on CALCITE-5623:
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I guess this is more of a question / discussion than a bug.
> calcite assert keyword usage
> ----------------------------
>
> Key: CALCITE-5623
> URL: https://issues.apache.org/jira/browse/CALCITE-5623
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.34.0
> Reporter: Ran Tao
> Assignee: Ran Tao
> Priority: Major
>
> The code of many calcite modules use the 'assert' keyword of java to do
> checking, which actually depends on the enablement of the -enableassertions
> (-ea) option (default is false, which means some assert code can not work),
> otherwise it may lead to unexpected behavior and cause NPE.
> In fact, we have some mature Preconditions tools, we can use it to replace
> 'assert' keyword.
> why calcite project use 'assert' keyword frequently? or it's a technical debt?
>
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