[hotfix][coordination] Provide richer exception message for suppresse…

…d exceptions durnig coordinator failover

flink-runtime/src/main/java/org/apache/flink/runtime/operators/coordination/OperatorCoordinatorHolder.java

@@ -541,14 +541,6 @@ public OperatorID getOperatorId() {
  @Override
  public void failJob(final Throwable cause) {
  checkInitialized();
- if (failed) {
- LOG.debug(
- "Ignoring the request to fail job because the job is already failing. "
- + "The ignored failure cause is",
- cause);
- return;
- }
- failed = true;
 
  final FlinkException e =
  new FlinkException(
@@ -559,6 +551,15 @@ public void failJob(final Throwable cause) {
  + ").",
  cause);
 
+ if (failed) {
+ LOG.debug(
+ "Ignoring the request to fail job because the job is already failing. "
+ + "The ignored failure cause is",
+ e);
+ return;
+ }
+ failed = true;
+
  schedulerExecutor.execute(() -> globalFailureHandler.accept(e));
  }