HBASE-22282 Should deal with error in the callback of RawAsyncHBaseAdmin.splitRegion methods

Author: Apache9

hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java

@@ -1367,6 +1367,10 @@ public CompletableFuture<Void> split(TableName tableName, byte[] splitPoint) {
   public CompletableFuture<Void> splitRegion(byte[] regionName) {
     CompletableFuture<Void> future = new CompletableFuture<>();
     addListener(getRegionLocation(regionName), (location, err) -> {
+      if (err != null) {
+        future.completeExceptionally(err);
+        return;
+      }
       RegionInfo regionInfo = location.getRegion();
       if (regionInfo.getReplicaId() != RegionInfo.DEFAULT_REPLICA_ID) {
         future
@@ -1397,6 +1401,10 @@ public CompletableFuture<Void> splitRegion(byte[] regionName, byte[] splitPoint)
       "splitPoint is null. If you don't specify a splitPoint, use splitRegion(byte[]) instead");
     CompletableFuture<Void> future = new CompletableFuture<>();
     addListener(getRegionLocation(regionName), (location, err) -> {
+      if (err != null) {
+        future.completeExceptionally(err);
+        return;
+      }
       RegionInfo regionInfo = location.getRegion();
       if (regionInfo.getReplicaId() != RegionInfo.DEFAULT_REPLICA_ID) {
         future