Ted Yu created FLINK-4089:
-----------------------------
Summary: Ineffective null check in
YarnClusterClient#getApplicationStatus()
Key: FLINK-4089
URL: https://issues.apache.org/jira/browse/FLINK-4089
Project: Flink
Issue Type: Bug
Reporter: Ted Yu
Here is related code:
{code}
if(pollingRunner == null) {
LOG.warn("YarnClusterClient.getApplicationStatus() has been called on an
uninitialized cluster." +
"The system might be in an erroneous state");
}
ApplicationReport lastReport = pollingRunner.getLastReport();
{code}
If pollingRunner is null, NPE would result from the getLastReport() call.
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