ibzib commented on a change in pull request #15267:
URL: https://github.com/apache/beam/pull/15267#discussion_r704552747
##########
File path:
runners/spark/src/main/java/org/apache/beam/runners/spark/structuredstreaming/translation/batch/GroupByKeyTranslatorBatch.java
##########
@@ -17,74 +17,95 @@
*/
package org.apache.beam.runners.spark.structuredstreaming.translation.batch;
-import java.io.Serializable;
-import org.apache.beam.runners.core.InMemoryStateInternals;
-import org.apache.beam.runners.core.StateInternals;
-import org.apache.beam.runners.core.StateInternalsFactory;
-import org.apache.beam.runners.core.SystemReduceFn;
+import java.util.ArrayList;
+import java.util.List;
+import org.apache.beam.runners.core.Concatenate;
import
org.apache.beam.runners.spark.structuredstreaming.translation.AbstractTranslationContext;
import
org.apache.beam.runners.spark.structuredstreaming.translation.TransformTranslator;
-import
org.apache.beam.runners.spark.structuredstreaming.translation.batch.functions.GroupAlsoByWindowViaOutputBufferFn;
import
org.apache.beam.runners.spark.structuredstreaming.translation.helpers.EncoderHelpers;
import
org.apache.beam.runners.spark.structuredstreaming.translation.helpers.KVHelpers;
+import org.apache.beam.sdk.coders.CannotProvideCoderException;
import org.apache.beam.sdk.coders.Coder;
-import org.apache.beam.sdk.coders.IterableCoder;
import org.apache.beam.sdk.coders.KvCoder;
+import org.apache.beam.sdk.transforms.Combine;
import org.apache.beam.sdk.transforms.PTransform;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
import org.apache.beam.sdk.util.WindowedValue;
import org.apache.beam.sdk.values.KV;
import org.apache.beam.sdk.values.PCollection;
import org.apache.beam.sdk.values.WindowingStrategy;
+import org.apache.spark.api.java.function.FlatMapFunction;
import org.apache.spark.sql.Dataset;
import org.apache.spark.sql.KeyValueGroupedDataset;
+import scala.Tuple2;
class GroupByKeyTranslatorBatch<K, V>
- implements TransformTranslator<
- PTransform<PCollection<KV<K, V>>, PCollection<KV<K, Iterable<V>>>>> {
+ implements TransformTranslator<
Review comment:
I don't have a problem with either way, I was just curious.
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