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https://issues.apache.org/jira/browse/CALCITE-4098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17149061#comment-17149061
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Chunwei Lei commented on CALCITE-4098:
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Attached the PR.
> Remove redundant code in "RelJson.toJson(RelDistribution)"
> ----------------------------------------------------------
>
> Key: CALCITE-4098
> URL: https://issues.apache.org/jira/browse/CALCITE-4098
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Jiatao Tao
> Assignee: Jiatao Tao
> Priority: Minor
>
> RelDistribution#getKeys is annotated as nonnull, and must return
> "List<Integer>", so this code is unnecessary.
>
> {code:java}
> List<Object> keys = new ArrayList<>(relDistribution.getKeys().size());
> for (Integer key : relDistribution.getKeys()) {
> keys.add(toJson(key));
> }
>
> {code}
>
>
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