HBASE-14758 Add UT case for unchecked error/exception thrown in AsyncProcess#sendMultiAction (Yu Li)

hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestAsyncProcess.java

@@ -29,7 +29,10 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.TreeSet;
+import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
+import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.SynchronousQueue;
 import java.util.concurrent.ThreadFactory;
@@ -1049,4 +1052,41 @@ public class TestAsyncProcess {
 
     return p;
   }
+
+  static class MyThreadPoolExecutor extends ThreadPoolExecutor {
+    public MyThreadPoolExecutor(int coreThreads, int maxThreads, long keepAliveTime,
+        TimeUnit timeunit, BlockingQueue<Runnable> blockingqueue) {
+      super(coreThreads, maxThreads, keepAliveTime, timeunit, blockingqueue);
+    }
+
+    @Override
+    public Future submit(Runnable runnable) {
+      throw new OutOfMemoryError("OutOfMemory error thrown by means");
+    }
+  }
+
+  static class AsyncProcessForThrowableCheck extends AsyncProcess {
+    public AsyncProcessForThrowableCheck(ClusterConnection hc, Configuration conf,
+        ExecutorService pool) {
+      super(hc, conf, pool, new RpcRetryingCallerFactory(conf), false, new RpcControllerFactory(
+          conf));
+    }
+  }
+
+  @Test
+  public void testUncheckedException() throws Exception {
+    // Test the case pool.submit throws unchecked exception
+    ClusterConnection hc = createHConnection();
+    MyThreadPoolExecutor myPool =
+        new MyThreadPoolExecutor(1, 20, 60, TimeUnit.SECONDS,
+            new LinkedBlockingQueue<Runnable>(200));
+    AsyncProcess ap = new AsyncProcessForThrowableCheck(hc, conf, myPool);
+
+    List<Put> puts = new ArrayList<Put>();
+    puts.add(createPut(1, true));
+
+    ap.submit(DUMMY_TABLE, puts, false, null, false);
+    Assert.assertTrue(puts.isEmpty());
+  }
+
 }