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96 changes: 96 additions & 0 deletions
96
...ark-sql-engine/src/main/scala/org/apache/spark/sql/execution/arrow/KyuubiArrowUtils.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.sql.execution.arrow | ||
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| import java.io.{ByteArrayInputStream, ByteArrayOutputStream} | ||
| import java.nio.channels.Channels | ||
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| import org.apache.arrow.memory.RootAllocator | ||
| import org.apache.arrow.vector.ipc.{ArrowStreamReader, ArrowStreamWriter, ReadChannel, WriteChannel} | ||
| import org.apache.arrow.vector.ipc.message.MessageSerializer | ||
| import org.apache.arrow.vector.{VectorLoader, VectorSchemaRoot, VectorUnloader} | ||
| import org.apache.spark.sql.types.StructType | ||
| import org.apache.spark.sql.util.ArrowUtils | ||
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| object KyuubiArrowUtils { | ||
| val rootAllocator = new RootAllocator(Long.MaxValue) | ||
| .newChildAllocator("ReadIntTest", 0, Long.MaxValue) | ||
| // BufferAllocator allocator = | ||
| // ArrowUtils.rootAllocator.newChildAllocator("ReadIntTest", 0, Long.MAX_VALUE); | ||
| def slice(bytes: Array[Byte], start: Int, length: Int): Array[Byte] = { | ||
| val in = new ByteArrayInputStream(bytes) | ||
| val out = new ByteArrayOutputStream() | ||
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| var reader: ArrowStreamReader = null | ||
| try { | ||
| reader = new ArrowStreamReader(in, rootAllocator) | ||
| // reader.getVectorSchemaRoot.getSchema | ||
| reader.loadNextBatch() | ||
| val root = reader.getVectorSchemaRoot.slice(start, length) | ||
| // val loader = new VectorLoader(root) | ||
| val writer = new ArrowStreamWriter(root, null, out) | ||
| writer.start() | ||
| writer.writeBatch() | ||
| writer.end() | ||
| writer.close() | ||
| out.toByteArray | ||
| } finally { | ||
| if (reader != null) { | ||
| reader.close() | ||
| } | ||
| in.close() | ||
| out.close() | ||
| } | ||
| } | ||
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| def sliceV2(schema: StructType, | ||
| timeZoneId: String, bytes: Array[Byte], start: Int, length: Int): Array[Byte] = { | ||
| val in = new ByteArrayInputStream(bytes) | ||
| val out = new ByteArrayOutputStream() | ||
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| try { | ||
| // reader = new ArrowStreamReader(in, rootAllocator) | ||
| // // reader.getVectorSchemaRoot.getSchema | ||
| // reader.loadNextBatch() | ||
| // println("bytes......" + bytes.length) | ||
| // println("rowCount......" + reader.getVectorSchemaRoot.getRowCount) | ||
| // val root = reader.getVectorSchemaRoot.slice(start, length) | ||
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| val recordBatch = MessageSerializer.deserializeRecordBatch( | ||
| new ReadChannel(Channels.newChannel(in)), rootAllocator) | ||
| val arrowSchema = ArrowUtils.toArrowSchema(schema, timeZoneId) | ||
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| val root = VectorSchemaRoot.create(arrowSchema, rootAllocator) | ||
| val vectorLoader = new VectorLoader(root) | ||
| vectorLoader.load(recordBatch) | ||
| recordBatch.close() | ||
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| val unloader = new VectorUnloader(root.slice(start, length)) | ||
| val writeChannel = new WriteChannel(Channels.newChannel(out)) | ||
| val batch = unloader.getRecordBatch() | ||
| MessageSerializer.serialize(writeChannel, batch) | ||
| batch.close() | ||
| out.toByteArray() | ||
| } finally { | ||
| in.close() | ||
| out.close() | ||
| } | ||
| } | ||
| } |