YARN-6658. Remove columnFor() methods of Columns in HBaseTimeline backend (Haibo Chen via Varun Saxena)

(cherry picked from commit f7cba98504a5e968bb6ae976d20b71c84a4664f2)

Conflicts:
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/apptoflow/AppToFlowColumn.java

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/application/ApplicationColumn.java

@@ -105,52 +105,4 @@ public enum ApplicationColumn implements Column<ApplicationTable> {
     return column.getValueConverter();
   }
 
-  /**
-   * Retrieve an {@link ApplicationColumn} given a name, or null if there is no
-   * match. The following holds true: {@code columnFor(x) == columnFor(y)} if
-   * and only if {@code x.equals(y)} or {@code (x == y == null)}.
-   *
-   * @param columnQualifier Name of the column to retrieve
-   * @return the corresponding {@link ApplicationColumn} or null
-   */
-  public static final ApplicationColumn columnFor(String columnQualifier) {
-
-    // Match column based on value, assume column family matches.
-    for (ApplicationColumn ac : ApplicationColumn.values()) {
-      // Find a match based only on name.
-      if (ac.getColumnQualifier().equals(columnQualifier)) {
-        return ac;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
-  /**
-   * Retrieve an {@link ApplicationColumn} given a name, or null if there is no
-   * match. The following holds true: {@code columnFor(a,x) == columnFor(b,y)}
-   * if and only if {@code a.equals(b) & x.equals(y)} or
-   * {@code (x == y == null)}
-   *
-   * @param columnFamily The columnFamily for which to retrieve the column.
-   * @param name Name of the column to retrieve
-   * @return the corresponding {@link ApplicationColumn} or null if both
-   *         arguments don't match.
-   */
-  public static final ApplicationColumn columnFor(
-      ApplicationColumnFamily columnFamily, String name) {
-
-    for (ApplicationColumn ac : ApplicationColumn.values()) {
-      // Find a match based column family and on name.
-      if (ac.columnFamily.equals(columnFamily)
-          && ac.getColumnQualifier().equals(name)) {
-        return ac;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/application/ApplicationColumnPrefix.java

@@ -233,56 +233,4 @@ public enum ApplicationColumnPrefix implements ColumnPrefix<ApplicationTable> {
         keyConverter);
   }
 
-  /**
-   * Retrieve an {@link ApplicationColumnPrefix} given a name, or null if there
-   * is no match. The following holds true: {@code columnFor(x) == columnFor(y)}
-   * if and only if {@code x.equals(y)} or {@code (x == y == null)}
-   *
-   * @param columnPrefix Name of the column to retrieve
-   * @return the corresponding {@link ApplicationColumnPrefix} or null
-   */
-  public static final ApplicationColumnPrefix columnFor(String columnPrefix) {
-
-    // Match column based on value, assume column family matches.
-    for (ApplicationColumnPrefix acp : ApplicationColumnPrefix.values()) {
-      // Find a match based only on name.
-      if (acp.getColumnPrefix().equals(columnPrefix)) {
-        return acp;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
-  /**
-   * Retrieve an {@link ApplicationColumnPrefix} given a name, or null if there
-   * is no match. The following holds true:
-   * {@code columnFor(a,x) == columnFor(b,y)} if and only if
-   * {@code (x == y == null)} or {@code a.equals(b) & x.equals(y)}
-   *
-   * @param columnFamily The columnFamily for which to retrieve the column.
-   * @param columnPrefix Name of the column to retrieve
-   * @return the corresponding {@link ApplicationColumnPrefix} or null if both
-   *         arguments don't match.
-   */
-  public static final ApplicationColumnPrefix columnFor(
-      ApplicationColumnFamily columnFamily, String columnPrefix) {
-
-    // TODO: needs unit test to confirm and need to update javadoc to explain
-    // null prefix case.
-
-    for (ApplicationColumnPrefix acp : ApplicationColumnPrefix.values()) {
-      // Find a match based column family and on name.
-      if (acp.columnFamily.equals(columnFamily)
-          && (((columnPrefix == null) && (acp.getColumnPrefix() == null)) ||
-          (acp.getColumnPrefix().equals(columnPrefix)))) {
-        return acp;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/entity/EntityColumn.java

@@ -94,28 +94,6 @@ public enum EntityColumn implements Column<EntityTable> {
     return column.readResult(result, columnQualifierBytes);
   }
 
-  /**
-   * Retrieve an {@link EntityColumn} given a name, or null if there is no
-   * match. The following holds true: {@code columnFor(x) == columnFor(y)} if
-   * and only if {@code x.equals(y)} or {@code (x == y == null)}
-   *
-   * @param columnQualifier Name of the column to retrieve
-   * @return the corresponding {@link EntityColumn} or null
-   */
-  public static final EntityColumn columnFor(String columnQualifier) {
-
-    // Match column based on value, assume column family matches.
-    for (EntityColumn ec : EntityColumn.values()) {
-      // Find a match based only on name.
-      if (ec.getColumnQualifier().equals(columnQualifier)) {
-        return ec;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
   @Override
   public byte[] getColumnQualifierBytes() {
     return columnQualifierBytes.clone();
@@ -131,30 +109,4 @@ public enum EntityColumn implements Column<EntityTable> {
     return column.getValueConverter();
   }
 
-  /**
-   * Retrieve an {@link EntityColumn} given a name, or null if there is no
-   * match. The following holds true: {@code columnFor(a,x) == columnFor(b,y)}
-   * if and only if {@code a.equals(b) & x.equals(y)} or
-   * {@code (x == y == null)}
-   *
-   * @param columnFamily The columnFamily for which to retrieve the column.
-   * @param name Name of the column to retrieve
-   * @return the corresponding {@link EntityColumn} or null if both arguments
-   *         don't match.
-   */
-  public static final EntityColumn columnFor(EntityColumnFamily columnFamily,
-      String name) {
-
-    for (EntityColumn ec : EntityColumn.values()) {
-      // Find a match based column family and on name.
-      if (ec.columnFamily.equals(columnFamily)
-          && ec.getColumnQualifier().equals(name)) {
-        return ec;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/entity/EntityColumnPrefix.java

@@ -246,55 +246,4 @@ public enum EntityColumnPrefix implements ColumnPrefix<EntityTable> {
         keyConverter);
   }
 
-  /**
-   * Retrieve an {@link EntityColumnPrefix} given a name, or null if there is no
-   * match. The following holds true: {@code columnFor(x) == columnFor(y)} if
-   * and only if {@code x.equals(y)} or {@code (x == y == null)}
-   *
-   * @param columnPrefix Name of the column to retrieve
-   * @return the corresponding {@link EntityColumnPrefix} or null
-   */
-  public static final EntityColumnPrefix columnFor(String columnPrefix) {
-
-    // Match column based on value, assume column family matches.
-    for (EntityColumnPrefix ecp : EntityColumnPrefix.values()) {
-      // Find a match based only on name.
-      if (ecp.getColumnPrefix().equals(columnPrefix)) {
-        return ecp;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
-  /**
-   * Retrieve an {@link EntityColumnPrefix} given a name, or null if there is no
-   * match. The following holds true: {@code columnFor(a,x) == columnFor(b,y)}
-   * if and only if {@code (x == y == null)} or
-   * {@code a.equals(b) & x.equals(y)}
-   *
-   * @param columnFamily The columnFamily for which to retrieve the column.
-   * @param columnPrefix Name of the column to retrieve
-   * @return the corresponding {@link EntityColumnPrefix} or null if both
-   *         arguments don't match.
-   */
-  public static final EntityColumnPrefix columnFor(
-      EntityColumnFamily columnFamily, String columnPrefix) {
-
-    // TODO: needs unit test to confirm and need to update javadoc to explain
-    // null prefix case.
-
-    for (EntityColumnPrefix ecp : EntityColumnPrefix.values()) {
-      // Find a match based column family and on name.
-      if (ecp.columnFamily.equals(columnFamily)
-          && (((columnPrefix == null) && (ecp.getColumnPrefix() == null)) ||
-          (ecp.getColumnPrefix().equals(columnPrefix)))) {
-        return ecp;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowActivityColumnPrefix.java

@@ -191,62 +191,6 @@ public enum FlowActivityColumnPrefix
         keyConverter);
   }
 
-  /**
-   * Retrieve an {@link FlowActivityColumnPrefix} given a name, or null if there
-   * is no match. The following holds true: {@code columnFor(x) == columnFor(y)}
-   * if and only if {@code x.equals(y)} or {@code (x == y == null)}
-   *
-   * @param columnPrefix
-   *          Name of the column to retrieve
-   * @return the corresponding {@link FlowActivityColumnPrefix} or null
-   */
-  public static final FlowActivityColumnPrefix columnFor(String columnPrefix) {
-
-    // Match column based on value, assume column family matches.
-    for (FlowActivityColumnPrefix flowActivityColPrefix :
-        FlowActivityColumnPrefix.values()) {
-      // Find a match based only on name.
-      if (flowActivityColPrefix.getColumnPrefix().equals(columnPrefix)) {
-        return flowActivityColPrefix;
-      }
-    }
-    // Default to null
-    return null;
-  }
-
-  /**
-   * Retrieve an {@link FlowActivityColumnPrefix} given a name, or null if there
-   * is no match. The following holds true:
-   * {@code columnFor(a,x) == columnFor(b,y)} if and only if
-   * {@code (x == y == null)} or {@code a.equals(b) & x.equals(y)}
-   *
-   * @param columnFamily
-   *          The columnFamily for which to retrieve the column.
-   * @param columnPrefix
-   *          Name of the column to retrieve
-   * @return the corresponding {@link FlowActivityColumnPrefix} or null if both
-   *         arguments don't match.
-   */
-  public static final FlowActivityColumnPrefix columnFor(
-      FlowActivityColumnFamily columnFamily, String columnPrefix) {
-
-    // TODO: needs unit test to confirm and need to update javadoc to explain
-    // null prefix case.
-
-    for (FlowActivityColumnPrefix flowActivityColumnPrefix :
-        FlowActivityColumnPrefix.values()) {
-      // Find a match based column family and on name.
-      if (flowActivityColumnPrefix.columnFamily.equals(columnFamily)
-          && (((columnPrefix == null) && (flowActivityColumnPrefix
-              .getColumnPrefix() == null)) || (flowActivityColumnPrefix
-              .getColumnPrefix().equals(columnPrefix)))) {
-        return flowActivityColumnPrefix;
-      }
-    }
-    // Default to null
-    return null;
-  }
-
   /*
    * (non-Javadoc)
    *

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunColumn.java

@@ -123,60 +123,9 @@ public enum FlowRunColumn implements Column<FlowRunTable> {
     return column.readResult(result, columnQualifierBytes);
   }
 
-  /**
-   * Retrieve an {@link FlowRunColumn} given a name, or null if there is no
-   * match. The following holds true: {@code columnFor(x) == columnFor(y)} if
-   * and only if {@code x.equals(y)} or {@code (x == y == null)}
-   *
-   * @param columnQualifier
-   *          Name of the column to retrieve
-   * @return the corresponding {@link FlowRunColumn} or null
-   */
-  public static final FlowRunColumn columnFor(String columnQualifier) {
-
-    // Match column based on value, assume column family matches.
-    for (FlowRunColumn ec : FlowRunColumn.values()) {
-      // Find a match based only on name.
-      if (ec.getColumnQualifier().equals(columnQualifier)) {
-        return ec;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
   @Override
   public ValueConverter getValueConverter() {
     return column.getValueConverter();
   }
 
-  /**
-   * Retrieve an {@link FlowRunColumn} given a name, or null if there is no
-   * match. The following holds true: {@code columnFor(a,x) == columnFor(b,y)}
-   * if and only if {@code a.equals(b) & x.equals(y)} or
-   * {@code (x == y == null)}
-   *
-   * @param columnFamily
-   *          The columnFamily for which to retrieve the column.
-   * @param name
-   *          Name of the column to retrieve
-   * @return the corresponding {@link FlowRunColumn} or null if both arguments
-   *         don't match.
-   */
-  public static final FlowRunColumn columnFor(FlowRunColumnFamily columnFamily,
-      String name) {
-
-    for (FlowRunColumn ec : FlowRunColumn.values()) {
-      // Find a match based column family and on name.
-      if (ec.columnFamily.equals(columnFamily)
-          && ec.getColumnQualifier().equals(name)) {
-        return ec;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunColumnPrefix.java

@@ -209,60 +209,9 @@ public enum FlowRunColumnPrefix implements ColumnPrefix<FlowRunTable> {
         keyConverter);
   }
 
-  /**
-   * Retrieve an {@link FlowRunColumnPrefix} given a name, or null if there is
-   * no match. The following holds true: {@code columnFor(x) == columnFor(y)} if
-   * and only if {@code x.equals(y)} or {@code (x == y == null)}
-   *
-   * @param columnPrefix Name of the column to retrieve
-   * @return the corresponding {@link FlowRunColumnPrefix} or null
-   */
-  public static final FlowRunColumnPrefix columnFor(String columnPrefix) {
-
-    // Match column based on value, assume column family matches.
-    for (FlowRunColumnPrefix frcp : FlowRunColumnPrefix.values()) {
-      // Find a match based only on name.
-      if (frcp.getColumnPrefix().equals(columnPrefix)) {
-        return frcp;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
-
   @Override
   public ValueConverter getValueConverter() {
     return column.getValueConverter();
   }
 
-  /**
-   * Retrieve an {@link FlowRunColumnPrefix} given a name, or null if there is
-   * no match. The following holds true:
-   * {@code columnFor(a,x) == columnFor(b,y)} if and only if
-   * {@code (x == y == null)} or {@code a.equals(b) & x.equals(y)}
-   *
-   * @param columnFamily The columnFamily for which to retrieve the column.
-   * @param columnPrefix Name of the column to retrieve
-   * @return the corresponding {@link FlowRunColumnPrefix} or null if both
-   *         arguments don't match.
-   */
-  public static final FlowRunColumnPrefix columnFor(
-      FlowRunColumnFamily columnFamily, String columnPrefix) {
-
-    // TODO: needs unit test to confirm and need to update javadoc to explain
-    // null prefix case.
-
-    for (FlowRunColumnPrefix frcp : FlowRunColumnPrefix.values()) {
-      // Find a match based column family and on name.
-      if (frcp.columnFamily.equals(columnFamily)
-          && (((columnPrefix == null) && (frcp.getColumnPrefix() == null)) ||
-          (frcp.getColumnPrefix().equals(columnPrefix)))) {
-        return frcp;
-      }
-    }
-
-    // Default to null
-    return null;
-  }
 }