YARN-2777. Mark the end of individual log in aggregated log. Contributed

by Varun Saxena

(cherry picked from commit 1a4b528691)

hadoop-yarn-project/CHANGES.txt

@@ -366,6 +366,9 @@ Release 2.7.0 - UNRELEASED
     YARN-2854. Updated the documentation of the timeline service and the generic
     history service. (Naganarasimha G R via zjshen)
 
+    YARN-2777. Mark the end of individual log in aggregated log.
+    (Varun Saxena via xgong)
+
   OPTIMIZATIONS
 
     YARN-2990. FairScheduler's delay-scheduling always waits for node-local and 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/AggregatedLogFormat.java

@@ -711,6 +711,7 @@ public class AggregatedLogFormat {
                   pendingRead > buf.length ? buf.length : (int) pendingRead;
         len = valueStream.read(buf, 0, toRead);
       }
+      out.println("End of LogType:" + fileType);
       out.println("");
     }
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/logaggregation/TestAggregatedLogFormat.java

@@ -257,7 +257,8 @@ public class TestAggregatedLogFormat {
             + (logUploadedTime ? ("\nLog Upload Time:" + Times.format(System
               .currentTimeMillis())).length() : 0)
             + ("\nLogLength:" + numChars).length()
-            + "\nLog Contents:\n".length() + numChars + "\n".length();
+            + "\nLog Contents:\n".length() + numChars + "\n".length()
+            + "End of LogType:stdout\n".length();
     Assert.assertTrue("LogType not matched", s.contains("LogType:stdout"));
     Assert.assertTrue("log file:stderr should not be aggregated.", !s.contains("LogType:stderr"));
     Assert.assertTrue("log file:logs should not be aggregated.", !s.contains("LogType:logs"));