MAPREDUCE-7192. JobHistoryServer attempts page support jump to containers log page in NM when logAggregation is disable. Contributed by Jiandan Yang.

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/webapp/HsAttemptsPage.java

@@ -26,6 +26,7 @@ import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 
+import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptId;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskId;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskType;
@@ -46,8 +47,8 @@ import com.google.inject.Inject;
 public class HsAttemptsPage extends HsTaskPage {
   static class FewAttemptsBlock extends HsTaskPage.AttemptsBlock {
     @Inject
-    FewAttemptsBlock(App ctx) {
-      super(ctx);
+    FewAttemptsBlock(App ctx, Configuration conf) {
+      super(ctx, conf);
     }
 
     /*

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/webapp/HsTaskPage.java

@@ -30,6 +30,7 @@ import static org.apache.hadoop.yarn.webapp.view.JQueryUI.tableInit;
 import java.util.Collection;
 
 import org.apache.commons.text.StringEscapeUtils;
+import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskId;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskType;
 import org.apache.hadoop.mapreduce.v2.app.job.TaskAttempt;
@@ -38,6 +39,7 @@ import org.apache.hadoop.mapreduce.v2.app.webapp.dao.MapTaskAttemptInfo;
 import org.apache.hadoop.mapreduce.v2.app.webapp.dao.TaskAttemptInfo;
 import org.apache.hadoop.mapreduce.v2.util.MRApps;
 import org.apache.hadoop.mapreduce.v2.util.MRWebAppUtil;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.util.Times;
 import org.apache.hadoop.yarn.webapp.SubView;
 import org.apache.hadoop.yarn.webapp.hamlet2.Hamlet;
@@ -61,10 +63,12 @@ public class HsTaskPage extends HsView {
    */
   static class AttemptsBlock extends HtmlBlock {
     final App app;
+    final Configuration conf;
 
     @Inject
-    AttemptsBlock(App ctx) {
+    AttemptsBlock(App ctx, Configuration conf) {
       app = ctx;
+      this.conf = conf;
     }
 
     @Override
@@ -152,13 +156,21 @@ public class HsTaskPage extends HsView {
               StringEscapeUtils.escapeHtml4(ta.getStatus()))).append("\",\"")
 
         .append("<a class='nodelink' href='" + MRWebAppUtil.getYARNWebappScheme() + nodeHttpAddr + "'>")
-        .append(nodeRackName + "/" + nodeHttpAddr + "</a>\",\"")
-
-        .append("<a class='logslink' href='").append(url("logs", nodeIdString
-          , containerIdString, taid, app.getJob().getUserName()))
-          .append("'>logs</a>\",\"")
-
-          .append(attemptStartTime).append("\",\"");
+        .append(nodeRackName + "/" + nodeHttpAddr + "</a>\",\"");
+
+         String logsUrl = url("logs", nodeIdString, containerIdString, taid,
+             app.getJob().getUserName());
+         if (!conf.getBoolean(YarnConfiguration.LOG_AGGREGATION_ENABLED,
+             YarnConfiguration.DEFAULT_LOG_AGGREGATION_ENABLED)) {
+           logsUrl =
+               url(MRWebAppUtil.getYARNWebappScheme(), nodeHttpAddr, "node",
+                   "containerlogs", containerIdString,
+                   app.getJob().getUserName());
+         }
+         attemptsTableData.append("<a class='logslink' href='").append(logsUrl)
+             .append("'>logs</a>\",\"");
+
+        attemptsTableData.append(attemptStartTime).append("\",\"");
 
         if(type == TaskType.REDUCE) {
           attemptsTableData.append(shuffleFinishTime).append("\",\"")

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/webapp/TestBlocks.java

@@ -58,6 +58,7 @@ import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.api.records.impl.pb.ApplicationAttemptIdPBImpl;
 import org.apache.hadoop.yarn.api.records.impl.pb.ApplicationIdPBImpl;
 import org.apache.hadoop.yarn.api.records.impl.pb.ContainerIdPBImpl;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.webapp.Controller.RequestContext;
 import org.apache.hadoop.yarn.webapp.View.ViewContext;
 import org.apache.hadoop.yarn.webapp.Controller;
@@ -193,7 +194,9 @@ public class TestBlocks {
     when(job.getUserName()).thenReturn("User");
     app.setJob(job);
 
-    AttemptsBlockForTest block = new AttemptsBlockForTest(app);
+    Configuration conf = new Configuration();
+    conf.setBoolean(YarnConfiguration.LOG_AGGREGATION_ENABLED, true);
+    AttemptsBlockForTest block = new AttemptsBlockForTest(app, conf);
     block.addParameter(AMParams.TASK_TYPE, "r");
 
     PrintWriter pWriter = new PrintWriter(data);
@@ -212,6 +215,27 @@ public class TestBlocks {
     assertTrue(data.toString().contains("100010"));
     assertTrue(data.toString().contains("100011"));
     assertTrue(data.toString().contains("100012"));
+    data.reset();
+    conf.setBoolean(YarnConfiguration.LOG_AGGREGATION_ENABLED, false);
+    block = new AttemptsBlockForTest(app, conf);
+    block.addParameter(AMParams.TASK_TYPE, "r");
+
+    pWriter = new PrintWriter(data);
+    html = new BlockForTest(new HtmlBlockForTest(), pWriter, 0, false);
+
+    block.render(html);
+    pWriter.flush();
+    // should be printed information about attempts
+    assertTrue(data.toString().contains("attempt_0_0001_r_000000_0"));
+    assertTrue(data.toString().contains("SUCCEEDED"));
+    assertFalse(data.toString().contains("Processed 128/128 records <p> \n"));
+    assertTrue(data.toString().contains("Processed 128\\/128 records &lt;p&gt; \\n"));
+    assertTrue(data.toString().contains(
+        "Node address:node:containerlogs:container_0_0005_01_000001:User:"));
+    assertTrue(data.toString().contains("100002"));
+    assertTrue(data.toString().contains("100010"));
+    assertTrue(data.toString().contains("100011"));
+    assertTrue(data.toString().contains("100012"));
   }
 
   /**
@@ -438,8 +462,8 @@ public class TestBlocks {
       return value == null ? defaultValue : value;
     }
 
-    public AttemptsBlockForTest(App ctx) {
-      super(ctx);
+    public AttemptsBlockForTest(App ctx, Configuration conf) {
+      super(ctx, conf);
     }
 
     @Override