CR: fix negative timeval bug

Author: original-brownbear

server/src/main/java/org/elasticsearch/action/admin/cluster/configuration/TransportClearVotingConfigExclusionsAction.java

@@ -35,6 +35,7 @@
 import org.elasticsearch.cluster.coordination.CoordinationMetadata.VotingConfigExclusion;
 import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
 import org.elasticsearch.cluster.metadata.Metadata;
+import org.elasticsearch.cluster.metadata.ProcessClusterEventTimeoutException;
 import org.elasticsearch.cluster.service.ClusterService;
 import org.elasticsearch.common.Priority;
 import org.elasticsearch.common.inject.Inject;
@@ -105,8 +106,13 @@ public void onTimeout(TimeValue timeout) {
 
     private void submitClearVotingConfigExclusionsTask(ClearVotingConfigExclusionsRequest request, long startTimeMillis,
                                                        ActionListener<ClearVotingConfigExclusionsResponse> listener) {
-        clusterService.submitStateUpdateTask("clear-voting-config-exclusions", new ClusterStateUpdateTask(Priority.URGENT,
-                TimeValue.timeValueMillis(request.getTimeout().millis() + startTimeMillis - threadPool.relativeTimeInMillis())) {
+        final long timeout = request.getTimeout().millis() + startTimeMillis - threadPool.relativeTimeInMillis();
+        final String source = "clear-voting-config-exclusions";
+        if (timeout <= 0) {
+            listener.onFailure(new ProcessClusterEventTimeoutException(request.getTimeout(), source));
+            return;
+        }
+        clusterService.submitStateUpdateTask(source, new ClusterStateUpdateTask(Priority.URGENT, TimeValue.timeValueMillis(timeout)) {
             @Override
             public ClusterState execute(ClusterState currentState) {
                 final CoordinationMetadata newCoordinationMetadata =