Ted Yu created FLINK-4309:
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Summary: 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
Priority: Minor
{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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