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https://issues.apache.org/jira/browse/FLINK-4309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15422573#comment-15422573
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ASF GitHub Bot commented on FLINK-4309:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/2371
> Potential null pointer dereference in DelegatingConfiguration#keySet()
> ----------------------------------------------------------------------
>
> Key: FLINK-4309
> URL: https://issues.apache.org/jira/browse/FLINK-4309
> Project: Flink
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: Sunny T
> Priority: Minor
> Fix For: 1.2.0, 1.1.2
>
>
> {code}
> final int prefixLen = this.prefix == null ? 0 : this.prefix.length();
> for (String key : this.backingConfig.keySet()) {
> if (key.startsWith(this.prefix)) {
> {code}
> If this.prefix == null, we would get NPE in startsWith():
> {code}
> public boolean startsWith(String prefix, int toffset) {
> char ta[] = value;
> int to = toffset;
> char pa[] = prefix.value;
> {code}
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