becketqin commented on a change in pull request #13784:
URL: https://github.com/apache/flink/pull/13784#discussion_r513902647
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File path: flink-core/src/main/java/org/apache/flink/util/ExceptionUtils.java
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@@ -565,6 +565,20 @@ else if (t instanceof Error) {
return Optional.empty();
}
+ /**
+ * Find the root cause of the given throwable chain.
+ *
+ * @param throwable the throwable chain to check.
+ * @return the root cause of the throwable chain.
+ */
+ public static Throwable findRootCause(Throwable throwable) {
Review comment:
Good point. I'll just reuse the Apache Commons Lang.
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