MAPREDUCE-5830. Added back the private API HostUtil.getTaskLogUrl(..) for binary compatibility with older clients like Hive 0.13. Contributed by Akira Ajisaka.

svn merge --ignore-ancestry -c 1604230 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.4@1604232 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -8,6 +8,10 @@ Release 2.4.1 - 2014-06-23
 
   IMPROVEMENTS
 
+    MAPREDUCE-5830. Added back the private API HostUtil.getTaskLogUrl(..) for
+    binary compatibility with older clients like Hive 0.13. (Akira Ajisaka via
+    vinodkv)
+
   OPTIMIZATIONS
 
   BUG FIXES

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/HostUtil.java

@@ -38,6 +38,21 @@ public class HostUtil {
         httpPort + "/tasklog?attemptid=" + taskAttemptID);
   }
 
+  /**
+   * Always throws {@link RuntimeException} because this method is not
+   * supposed to be called at runtime. This method is only for keeping
+   * binary compatibility with Hive 0.13. MAPREDUCE-5830 for the details.
+   * @deprecated Use {@link #getTaskLogUrl(String, String, String, String)}
+   * to construct the taskLogUrl.
+   */
+  @Deprecated
+  public static String getTaskLogUrl(String taskTrackerHostName,
+                                     String httpPort, String taskAttemptID) {
+    throw new RuntimeException(
+        "This method is not supposed to be called at runtime. " +
+        "Use HostUtil.getTaskLogUrl(String, String, String, String) instead.");
+  }
+
   public static String convertTrackerNameToHostName(String trackerName) {
     // Ugly!
     // Convert the trackerName to its host name