Fixing findbugs and license issues related to:

HADOOP-15703. ABFS - Implement client-side throttling.
Contributed by Sneha Varma and Thomas Marquardt.


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/347a52a8
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/347a52a8
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/347a52a8

Branch: refs/heads/trunk
Commit: 347a52a86654867be13e081c4f1309949d44449d
Parents: 97f06b3
Author: Thomas Marquardt <[email protected]>
Authored: Thu Sep 6 01:35:49 2018 +0000
Committer: Thomas Marquardt <[email protected]>
Committed: Mon Sep 17 19:54:01 2018 +0000

----------------------------------------------------------------------
 .../services/AbfsClientThrottlingIntercept.java   |  4 ++--
 .../TestAbfsClientThrottlingAnalyzer.java         | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+), 2 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hadoop/blob/347a52a8/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsClientThrottlingIntercept.java
----------------------------------------------------------------------
diff --git 
a/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsClientThrottlingIntercept.java
 
b/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsClientThrottlingIntercept.java
index e981d76..0892219 100644
--- 
a/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsClientThrottlingIntercept.java
+++ 
b/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsClientThrottlingIntercept.java
@@ -46,8 +46,6 @@ public final class AbfsClientThrottlingIntercept {
   private AbfsClientThrottlingIntercept() {
     readThrottler = new AbfsClientThrottlingAnalyzer("read");
     writeThrottler = new AbfsClientThrottlingAnalyzer("write");
-    isAutoThrottlingEnabled = true;
-    LOG.debug("Client-side throttling is enabled for the ABFS file system.");
   }
 
   public static synchronized void initializeSingleton(boolean 
isAutoThrottlingEnabled) {
@@ -56,6 +54,8 @@ public final class AbfsClientThrottlingIntercept {
     }
     if (singleton == null) {
       singleton = new AbfsClientThrottlingIntercept();
+      isAutoThrottlingEnabled = true;
+      LOG.debug("Client-side throttling is enabled for the ABFS file system.");
     }
   }
 

http://git-wip-us.apache.org/repos/asf/hadoop/blob/347a52a8/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsClientThrottlingAnalyzer.java
----------------------------------------------------------------------
diff --git 
a/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsClientThrottlingAnalyzer.java
 
b/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsClientThrottlingAnalyzer.java
index 5105b85..3f680e4 100644
--- 
a/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsClientThrottlingAnalyzer.java
+++ 
b/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsClientThrottlingAnalyzer.java
@@ -1,3 +1,21 @@
+/**
+ * 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.fs.azurebfs.services;
 
 import org.apache.hadoop.fs.contract.ContractTestUtils;


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