YARN-9922. Fixed YARN javadoc errors from YARN-9699.

           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/FairSchedulerConfiguration.java

@@ -86,7 +86,7 @@ public class FairSchedulerConfiguration extends Configuration {
   private static final String CONF_PREFIX =  "yarn.scheduler.fair.";
 
   /**
-   * Used during FS->CS conversion. When enabled, background threads are
+   * Used during FS->CS conversion. When enabled, background threads are
    * not started. This property should NOT be used by end-users!
    */
   public static final String MIGRATION_MODE = CONF_PREFIX + "migration.mode";

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

@@ -27,7 +27,7 @@ import org.slf4j.LoggerFactory;
 import java.io.File;
 
 /**
- * Parses arguments passed to the FS->CS converter.
+ * Parses arguments passed to the FS->CS converter.
  * If the arguments are valid, it calls the converter itself.
  *
  */

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

@@ -17,7 +17,7 @@
 package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.converter;
 
 /**
- * POJO that holds values for the FS->CS converter.
+ * POJO that holds values for the FS->CS converter.
  *
  */
 public final class FSConfigToCSConfigConverterParams {

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

@@ -35,7 +35,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * Class that determines what should happen if the FS->CS converter
+ * Class that determines what should happen if the FS->CS converter
  * encounters a property that is currently not supported.
  *
  * Acceptable values are either "abort" or "warning".

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

@@ -20,7 +20,7 @@ import org.apache.commons.cli.MissingArgumentException;
 
 /**
  * Indicates that some preconditions were not met
- * before FS->CS conversion.
+ * before FS->CS conversion.
  *
  */
 public class PreconditionException extends RuntimeException {

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

@@ -17,7 +17,7 @@
 package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.converter;
 
 /**
- * Thrown by the FS->CS converter if it encounters an
+ * Thrown by the FS->CS converter if it encounters an
  * unsupported property.
  */
 public class UnsupportedPropertyException extends RuntimeException {

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

@@ -17,8 +17,8 @@
  */
 
 /**
- * This package contains classes related to the Fair Scheduler ->
+ * This package contains classes related to the Fair Scheduler ->
  * Capacity Scheduler conversion.
  */
 
-package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.converter;
+package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.converter;