YARN-10316. FS-CS converter: convert maxAppsDefault, maxRunningApps settings. Contributed by Peter Bacsko

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/converter/FSConfigToCSConfigConverter.java

@@ -83,6 +83,9 @@ public class FSConfigToCSConfigConverter {
   private boolean preemptionEnabled = false;
   private int queueMaxAppsDefault;
   private float queueMaxAMShareDefault;
+  private Map<String, Integer> userMaxApps;
+  private int userMaxAppsDefault;
+
   private boolean autoCreateChildQueues = false;
   private boolean sizeBasedWeight = false;
   private boolean userAsDefaultQueue = false;
@@ -99,6 +102,8 @@ public class FSConfigToCSConfigConverter {
   private boolean consoleMode = false;
   private boolean convertPlacementRules = false;
 
+
+
   public FSConfigToCSConfigConverter(FSConfigToCSConfigRuleHandler
       ruleHandler, ConversionOptions conversionOptions) {
     this.ruleHandler = ruleHandler;
@@ -242,14 +247,13 @@ void convert(Configuration inputYarnSiteConfig) throws Exception {
 
     AllocationConfiguration allocConf = fs.getAllocationConfiguration();
     queueMaxAppsDefault = allocConf.getQueueMaxAppsDefault();
+    userMaxAppsDefault = allocConf.getUserMaxAppsDefault();
+    userMaxApps = allocConf.getUserMaxApps();
     queueMaxAMShareDefault = allocConf.getQueueMaxAMShareDefault();
 
     convertedYarnSiteConfig = new Configuration(false);
     capacitySchedulerConfig = new Configuration(false);
 
-    checkUserMaxApps(allocConf);
-    checkUserMaxAppsDefault(allocConf);
-
     convertYarnSiteXml(inputYarnSiteConfig, havePlacementPolicies);
     convertCapacitySchedulerXml(fs);
 
@@ -287,7 +291,9 @@ private void convertYarnSiteXml(Configuration inputYarnSiteConfig,
 
   private void convertCapacitySchedulerXml(FairScheduler fs) {
     FSParentQueue rootQueue = fs.getQueueManager().getRootQueue();
-    emitDefaultMaxApplications();
+    emitDefaultQueueMaxParallelApplications();
+    emitDefaultUserMaxParallelApplications();
+    emitUserMaxParallelApplications();
     emitDefaultMaxAMShare();
 
     FSQueueConverter queueConverter = FSQueueConverterBuilder.create()
@@ -322,14 +328,30 @@ private void convertCapacitySchedulerXml(FairScheduler fs) {
     }
   }
 
-  private void emitDefaultMaxApplications() {
+  private void emitDefaultQueueMaxParallelApplications() {
     if (queueMaxAppsDefault != Integer.MAX_VALUE) {
       capacitySchedulerConfig.set(
-          CapacitySchedulerConfiguration.MAXIMUM_SYSTEM_APPLICATIONS,
+          PREFIX + "max-parallel-apps",
           String.valueOf(queueMaxAppsDefault));
     }
   }
 
+  private void emitDefaultUserMaxParallelApplications() {
+    if (userMaxAppsDefault != Integer.MAX_VALUE) {
+      capacitySchedulerConfig.set(
+          PREFIX + "user.max-parallel-apps",
+          String.valueOf(userMaxAppsDefault));
+    }
+  }
+
+  private void emitUserMaxParallelApplications() {
+    userMaxApps
+        .forEach((user, apps) -> {
+          capacitySchedulerConfig.setInt(
+              PREFIX + "user." + user + ".max-parallel-apps", apps);
+        });
+  }
+
   private void emitDefaultMaxAMShare() {
     if (queueMaxAMShareDefault == QUEUE_MAX_AM_SHARE_DISABLED) {
       capacitySchedulerConfig.setFloat(
@@ -374,19 +396,6 @@ private void checkReservationSystem(Configuration conf) {
     }
   }
 
-  private void checkUserMaxApps(AllocationConfiguration allocConf) {
-    if (allocConf.getUserMaxApps() != null
-        && allocConf.getUserMaxApps().size() > 0) {
-      ruleHandler.handleUserMaxApps();
-    }
-  }
-
-  private void checkUserMaxAppsDefault(AllocationConfiguration allocConf) {
-    if (allocConf.getUserMaxAppsDefault() > 0) {
-      ruleHandler.handleUserMaxAppsDefault();
-    }
-  }
-
   private boolean isDrfUsed(FairScheduler fs) {
     FSQueue rootQueue = fs.getQueueManager().getRootQueue();
     AllocationConfiguration allocConf = fs.getAllocationConfiguration();

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/converter/FSConfigToCSConfigRuleHandler.java

@@ -170,14 +170,6 @@ public void handleChildQueueCount(String queue, int count) {
     }
   }
 
-  public void handleUserMaxApps() {
-    handle(USER_MAX_RUNNING_APPS, "<maxRunningApps>", null);
-  }
-
-  public void handleUserMaxAppsDefault() {
-    handle(USER_MAX_APPS_DEFAULT, "<userMaxAppsDefault>", null);
-  }
-
   public void handleDynamicMaxAssign() {
     handle(DYNAMIC_MAX_ASSIGN,
         FairSchedulerConfiguration.DYNAMIC_MAX_ASSIGN, null);

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/converter/FSQueueConverter.java

@@ -43,7 +43,7 @@
  */
 public class FSQueueConverter {
   public static final float QUEUE_MAX_AM_SHARE_DISABLED = -1.0f;
-  private static final int MAX_RUNNING_APPS_UNSET = Integer.MIN_VALUE;
+  private static final int MAX_RUNNING_APPS_UNSET = Integer.MAX_VALUE;
   private static final String FAIR_POLICY = "fair";
   private static final String FIFO_POLICY = "fifo";
 
@@ -79,7 +79,7 @@ public void convertQueueHierarchy(FSQueue queue) {
 
     emitChildQueues(queueName, children);
     emitMaxAMShare(queueName, queue);
-    emitMaxRunningApps(queueName, queue);
+    emitMaxParallelApps(queueName, queue);
     emitMaxAllocations(queueName, queue);
     emitPreemptionDisabled(queueName, queue);
 
@@ -138,14 +138,14 @@ private void emitMaxAMShare(String queueName, FSQueue queue) {
 
   /**
    * <maxRunningApps>
-   * ==> yarn.scheduler.capacity.<queue-name>.maximum-applications.
+   * ==> yarn.scheduler.capacity.<queue-name>.max-parallel-apps.
    * @param queueName
    * @param queue
    */
-  private void emitMaxRunningApps(String queueName, FSQueue queue) {
+  private void emitMaxParallelApps(String queueName, FSQueue queue) {
     if (queue.getMaxRunningApps() != MAX_RUNNING_APPS_UNSET
         && queue.getMaxRunningApps() != queueMaxAppsDefault) {
-      capacitySchedulerConfig.set(PREFIX + queueName + ".maximum-applications",
+      capacitySchedulerConfig.set(PREFIX + queueName + ".max-parallel-apps",
           String.valueOf(queue.getMaxRunningApps()));
     }
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/converter/TestFSConfigToCSConfigConverter.java

@@ -155,17 +155,7 @@ private void createConverter() {
         .withOutputDirectory(FSConfigConverterTestCommons.OUTPUT_DIR);
   }
 
-  @Test
-  public void testDefaultMaxApplications() throws Exception {
-    converter.convert(config);
 
-    Configuration conf = converter.getCapacitySchedulerConfig();
-    int maxApps =
-        conf.getInt(
-            CapacitySchedulerConfiguration.MAXIMUM_SYSTEM_APPLICATIONS, -1);
-
-    assertEquals("Default max apps", 15, maxApps);
-  }
 
   @Test
   public void testDefaultMaxAMShare() throws Exception {
@@ -252,14 +242,52 @@ public void testConvertACLs() throws Exception {
   }
 
   @Test
-  public void testDefaultMaxRunningApps() throws Exception {
+  public void testDefaultQueueMaxParallelApps() throws Exception {
     converter.convert(config);
 
     Configuration conf = converter.getCapacitySchedulerConfig();
 
-    // default setting
+    assertEquals("Default max parallel apps", 15,
-    assertEquals("Default max apps", 15,
+        conf.getInt(PREFIX + "max-parallel-apps", -1));
-        conf.getInt(PREFIX + "maximum-applications", -1));
+  }
+
+  @Test
+  public void testSpecificQueueMaxParallelApps() throws Exception {
+    converter.convert(config);
+
+    Configuration conf = converter.getCapacitySchedulerConfig();
+
+    assertEquals("root.admins.alice max parallel apps", 2,
+        conf.getInt(PREFIX + "root.admins.alice.max-parallel-apps", -1));
+  }
+
+  @Test
+  public void testDefaultUserMaxParallelApps() throws Exception {
+    converter.convert(config);
+
+    Configuration conf = converter.getCapacitySchedulerConfig();
+    int userMaxParallelApps =
+        conf.getInt(
+            PREFIX + "user.max-parallel-apps", -1);
+
+    assertEquals("Default user max parallel apps", 10,
+        userMaxParallelApps);
+  }
+
+  @Test
+  public void testSpecificUserMaxParallelApps() throws Exception {
+    converter.convert(config);
+
+    Configuration conf = converter.getCapacitySchedulerConfig();
+
+    assertEquals("Max parallel apps for alice", 30,
+        conf.getInt(PREFIX + "user.alice.max-parallel-apps", -1));
+    assertNull("Max parallel apps should be undefined for user bob",
+        conf.get(PREFIX + "user.bob.max-parallel-apps"));
+    assertNull("Max parallel apps should be undefined for user joe",
+        conf.get(PREFIX + "user.joe.max-parallel-apps"));
+    assertNull("Max parallel apps should be undefined for user john",
+        conf.get(PREFIX + "user.john.max-parallel-apps"));
   }
 
   @Test
@@ -285,28 +313,6 @@ public void testReservationSystemNotSupported() throws Exception {
     converter.convert(config);
   }
 
-  @Test
-  public void testUserMaxAppsNotSupported() throws Exception {
-    expectedException.expect(UnsupportedPropertyException.class);
-    expectedException.expectMessage("userMaxApps");
-
-    Mockito.doThrow(new UnsupportedPropertyException("userMaxApps"))
-      .when(ruleHandler).handleUserMaxApps();
-
-    converter.convert(config);
-  }
-
-  @Test
-  public void testUserMaxAppsDefaultNotSupported() throws Exception {
-    expectedException.expect(UnsupportedPropertyException.class);
-    expectedException.expectMessage("userMaxAppsDefault");
-
-    Mockito.doThrow(new UnsupportedPropertyException("userMaxAppsDefault"))
-      .when(ruleHandler).handleUserMaxAppsDefault();
-
-    converter.convert(config);
-  }
-
   @Test
   public void testConvertFSConfigurationClusterResource() throws Exception {
     FSConfigToCSConfigConverterParams params = createDefaultParamsBuilder()

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/converter/TestFSConfigToCSConfigRuleHandler.java

@@ -76,8 +76,6 @@ public void testInitPropertyActionsToWarning() throws IOException {
     ruleHandler.handleQueueAutoCreate("test");
     ruleHandler.handleReservationSystem();
     ruleHandler.handleSpecifiedNotFirstRule();
-    ruleHandler.handleUserMaxApps();
-    ruleHandler.handleUserMaxAppsDefault();
   }
 
   @Test
@@ -106,8 +104,6 @@ public void testAllRulesWarning() throws IOException {
     ruleHandler.handleQueueAutoCreate("test");
     ruleHandler.handleReservationSystem();
     ruleHandler.handleSpecifiedNotFirstRule();
-    ruleHandler.handleUserMaxApps();
-    ruleHandler.handleUserMaxAppsDefault();
   }
 
   @Test
@@ -140,8 +136,6 @@ public void testAllRulesAbort() throws IOException {
     expectAbort(() -> ruleHandler.handleQueueAutoCreate("test"));
     expectAbort(() -> ruleHandler.handleReservationSystem());
     expectAbort(() -> ruleHandler.handleSpecifiedNotFirstRule());
-    expectAbort(() -> ruleHandler.handleUserMaxApps());
-    expectAbort(() -> ruleHandler.handleUserMaxAppsDefault());
     expectAbort(() -> ruleHandler.handleFairAsDrf("test"));
   }
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/converter/TestFSQueueConverter.java

@@ -195,18 +195,18 @@ public void testQueueMaxAMShare() {
   }
 
   @Test
-  public void testQueueMaxRunningApps() {
+  public void testQueueMaxParallelApps() {
     converter = builder.build();
 
     converter.convertQueueHierarchy(rootQueue);
 
     assertEquals("root.admins.alice max apps", 2,
-        csConfig.getInt(PREFIX + "root.admins.alice.maximum-applications",
+        csConfig.getInt(PREFIX + "root.admins.alice.max-parallel-apps",
             -1));
 
     Set<String> remaining = Sets.difference(ALL_QUEUES,
         Sets.newHashSet("root.admins.alice"));
-    assertNoValueForQueues(remaining, ".maximum-applications", csConfig);
+    assertNoValueForQueues(remaining, ".max-parallel-apps", csConfig);
   }
 
   @Test