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https://issues.apache.org/jira/browse/FLINK-14499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16957529#comment-16957529
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Zili Chen commented on FLINK-14499:
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It looks like we can inject {{null}} for testing purpose.
> MetricRegistry#getMetricQueryServiceGatewayRpcAddress is Nonnull
> ----------------------------------------------------------------
>
> Key: FLINK-14499
> URL: https://issues.apache.org/jira/browse/FLINK-14499
> Project: Flink
> Issue Type: Improvement
> Reporter: Zili Chen
> Priority: Minor
>
> As codebase moved, I suspect
> {{MetricRegistry#getMetricQueryServiceGatewayRpcAddress}} is now non-null.
> One can try to figure it out and if so, refactor related code a bit.
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