Author: shv
Date: Sun Jan 13 01:13:29 2013
New Revision: 1432539
URL: http://svn.apache.org/viewvc?rev=1432539&view=rev
Log:
HDFS-1245. Plugable block id generation. Contributed by Konstantin Shvachko.
Added:
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/IdGenerator.java
(with props)
Modified:
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/SequentialNumber.java
Added:
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/IdGenerator.java
URL:
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/IdGenerator.java?rev=1432539&view=auto
==============================================================================
---
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/IdGenerator.java
(added)
+++
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/IdGenerator.java
Sun Jan 13 01:13:29 2013
@@ -0,0 +1,31 @@
+/**
+ * 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.util;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+
+/**
+ * Generic ID generator
+ * used for generating various types of number sequences.
+ */
+@InterfaceAudience.Private
+public interface IdGenerator {
+
+ /** Increment and then return the next value. */
+ public long nextValue();
+}
Propchange:
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/IdGenerator.java
------------------------------------------------------------------------------
svn:mime-type = text/plain
Modified:
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/SequentialNumber.java
URL:
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/SequentialNumber.java?rev=1432539&r1=1432538&r2=1432539&view=diff
==============================================================================
---
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/SequentialNumber.java
(original)
+++
hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/SequentialNumber.java
Sun Jan 13 01:13:29 2013
@@ -27,7 +27,7 @@ import org.apache.hadoop.classification.
* This class is thread safe.
*/
@InterfaceAudience.Private
-public abstract class SequentialNumber {
+public abstract class SequentialNumber implements IdGenerator {
private final AtomicLong currentValue;
/** Create a new instance with the given initial value. */
