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https://issues.apache.org/jira/browse/FLINK-9787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16812145#comment-16812145
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LiuJi commented on FLINK-9787:
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Agree, it's a good idea to avoid NPE when invoke
getGlobalJobParameters.toMap(). Is there anyone work on this issue？
> Change ExecutionConfig#getGlobalJobParameters to return an instance of
> GlobalJobParameters instead of null if no custom globalJobParameters are set
> yet
> -------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-9787
> URL: https://issues.apache.org/jira/browse/FLINK-9787
> Project: Flink
> Issue Type: Improvement
> Components: API / DataStream
> Reporter: Florian Schmidt
> Priority: Minor
> Fix For: 2.0.0
>
>
> Currently when accessing ExecutionConfig#getGlobalJobParameters this will
> return `null` if no globalJobParameters are set. This can easily lead to
> NullPointerExceptions when used with getGlobalJobParameters.toMap()
> An easy improvement for this would be to just return a new instance of
> GlobalJobParameters if none is set with the empty map as the parameters
> This would be a breaking change since we expose this via
> RuntimeContext#getExecutionConfig
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