HBASE-27619 Bulkload fails when trying to bulkload files with invalid names after HBASE-26707

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java

@@ -7280,7 +7280,7 @@ public Map<byte[], List<Path>> bulkLoadHFiles(Collection<Pair<byte[], String>> f
               reqTmp ? null : fs.getRegionDir().toString());
           }
           Pair<Path, Path> pair = null;
-          if (reqTmp) {
+          if (reqTmp || !StoreFileInfo.isHFile(finalPath)) {
             pair = store.preBulkLoadHFile(finalPath, seqId);
           } else {
             Path livePath = new Path(finalPath);

hbase-server/src/test/java/org/apache/hadoop/hbase/tool/TestBulkLoadHFilesSFT.java

@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.tool;
+
+import static org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory.TRACKER_IMPL;
+
+import org.apache.hadoop.hbase.HBaseClassTestRule;
+import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.codec.KeyValueCodecWithTags;
+import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
+import org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory;
+import org.apache.hadoop.hbase.testclassification.LargeTests;
+import org.apache.hadoop.hbase.testclassification.MiscTests;
+import org.junit.BeforeClass;
+import org.junit.ClassRule;
+import org.junit.experimental.categories.Category;
+
+/**
+ * Test cases for LoadIncrementalHFiles when SFT is enabled.
+ */
+@Category({ MiscTests.class, LargeTests.class })
+public class TestBulkLoadHFilesSFT extends TestBulkLoadHFiles {
+
+  @ClassRule
+  public static final HBaseClassTestRule CLASS_RULE =
+    HBaseClassTestRule.forClass(TestBulkLoadHFilesSFT.class);
+
+  @BeforeClass
+  public static void setUpBeforeClass() throws Exception {
+    util.getConfiguration().set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY, "");
+    util.getConfiguration().setInt(BulkLoadHFiles.MAX_FILES_PER_REGION_PER_FAMILY,
+      MAX_FILES_PER_REGION_PER_FAMILY);
+    util.getConfiguration().set(TRACKER_IMPL, StoreFileTrackerFactory.Trackers.FILE.name());
+    // change default behavior so that tag values are returned with normal rpcs
+    util.getConfiguration().set(HConstants.RPC_CODEC_CONF_KEY,
+      KeyValueCodecWithTags.class.getCanonicalName());
+    util.startMiniCluster();
+    setupNamespace();
+  }
+}