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[SPARK-28571][CORE][SHUFFLE] Use the shuffle writer plugin for the So…
…rtShuffleWriter ## What changes were proposed in this pull request? Use the shuffle writer APIs introduced in SPARK-28209 in the sort shuffle writer. ## How was this patch tested? Existing unit tests were changed to use the plugin instead, and they used the local disk version to ensure that there were no regressions. Closes #25342 from mccheah/shuffle-writer-refactor-sort-shuffle-writer. Lead-authored-by: mcheah <[email protected]> Co-authored-by: mccheah <[email protected]> Signed-off-by: Marcelo Vanzin <[email protected]>
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core/src/main/scala/org/apache/spark/shuffle/ShufflePartitionPairsWriter.scala
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.spark.shuffle | ||
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| import java.io.{Closeable, IOException, OutputStream} | ||
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| import org.apache.spark.serializer.{SerializationStream, SerializerInstance, SerializerManager} | ||
| import org.apache.spark.shuffle.api.ShufflePartitionWriter | ||
| import org.apache.spark.storage.BlockId | ||
| import org.apache.spark.util.Utils | ||
| import org.apache.spark.util.collection.PairsWriter | ||
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| /** | ||
| * A key-value writer inspired by {@link DiskBlockObjectWriter} that pushes the bytes to an | ||
| * arbitrary partition writer instead of writing to local disk through the block manager. | ||
| */ | ||
| private[spark] class ShufflePartitionPairsWriter( | ||
| partitionWriter: ShufflePartitionWriter, | ||
| serializerManager: SerializerManager, | ||
| serializerInstance: SerializerInstance, | ||
| blockId: BlockId, | ||
| writeMetrics: ShuffleWriteMetricsReporter) | ||
| extends PairsWriter with Closeable { | ||
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| private var isClosed = false | ||
| private var partitionStream: OutputStream = _ | ||
| private var wrappedStream: OutputStream = _ | ||
| private var objOut: SerializationStream = _ | ||
| private var numRecordsWritten = 0 | ||
| private var curNumBytesWritten = 0L | ||
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| override def write(key: Any, value: Any): Unit = { | ||
| if (isClosed) { | ||
| throw new IOException("Partition pairs writer is already closed.") | ||
| } | ||
| if (objOut == null) { | ||
| open() | ||
| } | ||
| objOut.writeKey(key) | ||
| objOut.writeValue(value) | ||
| recordWritten() | ||
| } | ||
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| private def open(): Unit = { | ||
| try { | ||
| partitionStream = partitionWriter.openStream | ||
| wrappedStream = serializerManager.wrapStream(blockId, partitionStream) | ||
| objOut = serializerInstance.serializeStream(wrappedStream) | ||
| } catch { | ||
| case e: Exception => | ||
| Utils.tryLogNonFatalError { | ||
| close() | ||
| } | ||
| throw e | ||
| } | ||
| } | ||
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| override def close(): Unit = { | ||
| if (!isClosed) { | ||
| Utils.tryWithSafeFinally { | ||
| Utils.tryWithSafeFinally { | ||
| objOut = closeIfNonNull(objOut) | ||
| // Setting these to null will prevent the underlying streams from being closed twice | ||
| // just in case any stream's close() implementation is not idempotent. | ||
| wrappedStream = null | ||
| partitionStream = null | ||
| } { | ||
| // Normally closing objOut would close the inner streams as well, but just in case there | ||
| // was an error in initialization etc. we make sure we clean the other streams up too. | ||
| Utils.tryWithSafeFinally { | ||
| wrappedStream = closeIfNonNull(wrappedStream) | ||
| // Same as above - if wrappedStream closes then assume it closes underlying | ||
| // partitionStream and don't close again in the finally | ||
| partitionStream = null | ||
| } { | ||
| partitionStream = closeIfNonNull(partitionStream) | ||
| } | ||
| } | ||
| updateBytesWritten() | ||
| } { | ||
| isClosed = true | ||
| } | ||
| } | ||
| } | ||
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| private def closeIfNonNull[T <: Closeable](closeable: T): T = { | ||
| if (closeable != null) { | ||
| closeable.close() | ||
| } | ||
| null.asInstanceOf[T] | ||
| } | ||
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| /** | ||
| * Notify the writer that a record worth of bytes has been written with OutputStream#write. | ||
| */ | ||
| private def recordWritten(): Unit = { | ||
| numRecordsWritten += 1 | ||
| writeMetrics.incRecordsWritten(1) | ||
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| if (numRecordsWritten % 16384 == 0) { | ||
| updateBytesWritten() | ||
| } | ||
| } | ||
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| private def updateBytesWritten(): Unit = { | ||
| val numBytesWritten = partitionWriter.getNumBytesWritten | ||
| val bytesWrittenDiff = numBytesWritten - curNumBytesWritten | ||
| writeMetrics.incBytesWritten(bytesWrittenDiff) | ||
| curNumBytesWritten = numBytesWritten | ||
| } | ||
| } |
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28 changes: 28 additions & 0 deletions
28
core/src/main/scala/org/apache/spark/util/collection/PairsWriter.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.spark.util.collection | ||
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| /** | ||
| * An abstraction of a consumer of key-value pairs, primarily used when | ||
| * persisting partitioned data, either through the shuffle writer plugins | ||
| * or via DiskBlockObjectWriter. | ||
| */ | ||
| private[spark] trait PairsWriter { | ||
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| def write(key: Any, value: Any): Unit | ||
| } |
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