Optimization error log

Author: lgh

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/hdfs/NNBench.java

@@ -143,7 +143,7 @@ private void cleanupBeforeTestrun() throws IOException {
    * 
    * @throws IOException on error
    */
-  private void createControlFiles() throws ExecutionException, InterruptedException {
+  private void createControlFiles() {
     LOG.info("Creating " + numberOfMaps + " control files");
 
     List<Future<Void>> list = new ArrayList<>();
@@ -160,8 +160,7 @@ private void createControlFiles() throws ExecutionException, InterruptedExceptio
       try {
         list.get(i).get();
       } catch (InterruptedException | ExecutionException e) {
-        LOG.error("Creating control files Error.");
-        throw e;
+        LOG.error("Creating control files Error." , e);
       }
     }