[SPARK-38579] Requesting Restful API can cause NullPointerException - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: 3.1.0, 3.1.1, 3.1.2, 3.2.0, 3.2.1
Fix Version/s: 3.1.3, 3.3.0, 3.2.2
Component/s: Web UI
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Description

When requesting Restful API {baseURL}/api/v1/applications/$appId/sql/$executionId which is introduced by this PR https://github.com/apache/spark/pull/28208, it can cause NullPointerException. The root cause is, when calling method doUpdate() of `LiveExecutionData`, `metricsValues` can be null. Then, when statement `printableMetrics(graph.allNodes, exec.metricValues)` is executed, it will throw NullPointerException.