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Add benchmarks for magnolify-parquet vs parquet-avro R/W (#1040)
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139
jmh/src/test/scala/magnolify/jmh/ParquetInMemoryPageStore.scala
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| /* | ||
| * Copyright 2024 Spotify AB | ||
| * | ||
| * Licensed 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 magnolify.jmh | ||
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| import org.apache.parquet.bytes.{ByteBufferReleaser, BytesInput, HeapByteBufferAllocator} | ||
| import org.apache.parquet.column.{ColumnDescriptor, Encoding} | ||
| import org.apache.parquet.column.page._ | ||
| import org.apache.parquet.column.statistics._ | ||
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| import scala.collection.mutable | ||
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| /** | ||
| * An in-memory Parquet page store modeled after parquet-java's MemPageStore, used to benchmark | ||
| * ParquetType conversion between Parquet Groups and Scala case classes | ||
| */ | ||
| class ParquetInMemoryPageStore(rowCount: Long) extends PageReadStore with PageWriteStore { | ||
| lazy val writers = new mutable.HashMap[ColumnDescriptor, ParquetInMemoryWriter]() | ||
| lazy val readers = new mutable.HashMap[ColumnDescriptor, ParquetInMemoryReader]() | ||
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| override def getPageReader(path: ColumnDescriptor): PageReader = | ||
| readers.getOrElseUpdate( | ||
| path, { | ||
| val writer = writers(path) | ||
| new ParquetInMemoryReader(writer.pages.toList, writer.dictionaryPage) | ||
| } | ||
| ) | ||
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| override def getPageWriter(path: ColumnDescriptor): PageWriter = | ||
| writers.getOrElseUpdate(path, new ParquetInMemoryWriter) | ||
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| override def getRowCount: Long = rowCount | ||
| } | ||
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| class ParquetInMemoryReader(pages: List[DataPageV1], dictionaryPage: DictionaryPage) | ||
| extends PageReader { | ||
| // Infinitely return the first page; for the purposes of benchmarking, we don't care about the data itself | ||
| private val page = pages.head | ||
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| override def readDictionaryPage(): DictionaryPage = dictionaryPage | ||
| override def getTotalValueCount: Long = Long.MaxValue | ||
| override def readPage(): DataPage = new DataPageV1( | ||
| page.getBytes.copy(new ByteBufferReleaser(new HeapByteBufferAllocator)), | ||
| page.getValueCount, | ||
| page.getUncompressedSize, | ||
| page.getStatistics, | ||
| page.getRlEncoding, | ||
| page.getDlEncoding, | ||
| page.getValueEncoding | ||
| ) | ||
| } | ||
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| class ParquetInMemoryWriter extends PageWriter { | ||
| var numRows = 0 | ||
| var numValues: Long = 0 | ||
| var memSize: Long = 0 | ||
| val pages = new mutable.ListBuffer[DataPageV1]() | ||
| var dictionaryPage: DictionaryPage = null | ||
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| override def writePage( | ||
| bytesInput: BytesInput, | ||
| valueCount: Int, | ||
| statistics: Statistics[_], | ||
| rlEncoding: Encoding, | ||
| dlEncoding: Encoding, | ||
| valuesEncoding: Encoding | ||
| ): Unit = | ||
| writePage(bytesInput, valueCount, 1, statistics, rlEncoding, dlEncoding, valuesEncoding) | ||
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| override def writePage( | ||
| bytesInput: BytesInput, | ||
| valueCount: Int, | ||
| rowCount: Int, | ||
| statistics: Statistics[_], | ||
| sizeStatistics: SizeStatistics, | ||
| rlEncoding: Encoding, | ||
| dlEncoding: Encoding, | ||
| valuesEncoding: Encoding | ||
| ): Unit = | ||
| writePage(bytesInput, valueCount, rowCount, statistics, rlEncoding, dlEncoding, valuesEncoding) | ||
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| override def writePage( | ||
| bytesInput: BytesInput, | ||
| valueCount: Int, | ||
| rowCount: Int, | ||
| statistics: Statistics[_], | ||
| rlEncoding: Encoding, | ||
| dlEncoding: Encoding, | ||
| valuesEncoding: Encoding | ||
| ): Unit = { | ||
| pages.addOne( | ||
| new DataPageV1( | ||
| bytesInput.copy(new ByteBufferReleaser(new HeapByteBufferAllocator)), | ||
| valueCount, | ||
| bytesInput.size().toInt, | ||
| statistics, | ||
| rlEncoding, | ||
| dlEncoding, | ||
| valuesEncoding | ||
| ) | ||
| ) | ||
| memSize += bytesInput.size() | ||
| numRows += rowCount | ||
| numValues += valueCount | ||
| } | ||
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| override def writePageV2( | ||
| rowCount: Int, | ||
| nullCount: Int, | ||
| valueCount: Int, | ||
| repetitionLevels: BytesInput, | ||
| definitionLevels: BytesInput, | ||
| dataEncoding: Encoding, | ||
| data: BytesInput, | ||
| statistics: Statistics[_] | ||
| ): Unit = ??? | ||
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| override def getMemSize: Long = memSize | ||
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| override def allocatedSize(): Long = memSize | ||
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| override def writeDictionaryPage(dictionaryPage: DictionaryPage): Unit = | ||
| this.dictionaryPage = dictionaryPage | ||
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| override def memUsageString(prefix: String): String = s"$prefix $memSize bytes" | ||
| } |