content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.beam.runners.spark.structuredstreaming.translation.batch;
  
  import static org.apache.spark.sql.functions.col;
  
  import java.io.IOException;
  import org.apache.beam.runners.spark.structuredstreaming.translation.TransformTranslator;
  import org.apache.beam.sdk.transforms.Reshuffle;
  import org.apache.beam.sdk.values.KV;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.WindowedValue;
  import org.apache.spark.sql.Dataset;
  import org.apache.spark.sql.internal.SQLConf;
  
  class ReshuffleTranslatorBatch<K, V>
      extends TransformTranslator<PCollection<KV<K, V>>, PCollection<KV<K, V>>, Reshuffle<K, V>> {
  
    ReshuffleTranslatorBatch() {
      super(0.1f);
    }
  
    @Override
    protected void translate(Reshuffle<K, V> transform, Context cxt) throws IOException {
      Dataset<WindowedValue<KV<K, V>>> input = cxt.getDataset(cxt.getInput());
      cxt.putDataset(cxt.getOutput(), input.repartition(col("value.key")));
    }
  
    static class ViaRandomKey<V>
        extends TransformTranslator<PCollection<V>, PCollection<V>, Reshuffle.ViaRandomKey<V>> {
  
      ViaRandomKey() {
        super(0.1f);
      }
  
      @Override
      protected void translate(Reshuffle.ViaRandomKey<V> transform, Context cxt) throws IOException {
        Dataset<WindowedValue<V>> input = cxt.getDataset(cxt.getInput());
        // Reshuffle randomly
        cxt.putDataset(cxt.getOutput(), input.repartition(SQLConf.get().numShufflePartitions()));
      }
    }
  }
  