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[Gluten-207] Support MergeTree DS V1 (facebookincubator#208)
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backends-clickhouse/src/main/java/io/glutenproject/utils/SnowflakeIdWorker.java
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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 io.glutenproject.utils; | ||
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| import org.apache.spark.SparkEnv; | ||
| import org.apache.spark.sql.execution.datasources.v2.clickhouse.ClickHouseConfig; | ||
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| /** | ||
| * An object that generates IDs. | ||
| * This is broken into a separate class in case | ||
| * we ever want to support multiple worker threads per process. | ||
| * Refer to twitter-archive Snowflake. | ||
| */ | ||
| public class SnowflakeIdWorker { | ||
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| // ==============================Fields=========================================== | ||
| private final long twepoch = 1640966400L; | ||
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| private final long workerIdBits = 6L; | ||
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| private final long maxWorkerId = -1L ^ (-1L << workerIdBits); | ||
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| private final long sequenceBits = 16L; | ||
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| private final long workerIdShift = sequenceBits; | ||
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| private final long timestampLeftShift = sequenceBits + workerIdBits; | ||
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| private final long sequenceMask = -1L ^ (-1L << sequenceBits); | ||
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| private long workerId; | ||
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| private long sequence = 0L; | ||
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| private long lastTimestamp = -1L; | ||
|
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| //==============================Singleton===================================== | ||
| private static volatile SnowflakeIdWorker INSTANCE; | ||
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| public static SnowflakeIdWorker getInstance() { | ||
| if (INSTANCE == null) { | ||
| synchronized (SnowflakeIdWorker.class) { | ||
| if (INSTANCE == null) { | ||
| if (!SparkEnv.get().conf().contains(ClickHouseConfig.CLICKHOUSE_WORKER_ID())) { | ||
| throw new IllegalArgumentException("Please set an unique value to " + | ||
| ClickHouseConfig.CLICKHOUSE_WORKER_ID()); | ||
| } | ||
| INSTANCE = new SnowflakeIdWorker( | ||
| SparkEnv.get().conf() | ||
| .getLong(ClickHouseConfig.CLICKHOUSE_WORKER_ID(), 0)); | ||
| } | ||
| } | ||
| } | ||
| return INSTANCE; | ||
| } | ||
|
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| //==============================Constructors===================================== | ||
|
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| public SnowflakeIdWorker(long workerId) { | ||
| if (workerId > maxWorkerId || workerId < 0) { | ||
| throw new IllegalArgumentException( | ||
| String.format("worker Id can't be greater than %d or less than 0", maxWorkerId)); | ||
| } | ||
| this.workerId = workerId; | ||
| } | ||
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| // ==============================Methods========================================== | ||
| public synchronized long nextId() { | ||
| long timestamp = timeGen(); | ||
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| if (timestamp < lastTimestamp) { | ||
| throw new RuntimeException( | ||
| String.format("Clock moved backwards. Refusing to generate id for %d milliseconds", | ||
| lastTimestamp - timestamp)); | ||
| } | ||
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| if (lastTimestamp == timestamp) { | ||
| sequence = (sequence + 1) & sequenceMask; | ||
| if (sequence == 0) { | ||
| timestamp = tilNextMillis(lastTimestamp); | ||
| } | ||
| } | ||
| else { | ||
| sequence = 0L; | ||
| } | ||
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| lastTimestamp = timestamp; | ||
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| return ((timestamp - twepoch) << timestampLeftShift) // | ||
| | (workerId << workerIdShift) // | ||
| | sequence; | ||
| } | ||
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| protected long tilNextMillis(long lastTimestamp) { | ||
| long timestamp = timeGen(); | ||
| while (timestamp <= lastTimestamp) { | ||
| timestamp = timeGen(); | ||
| } | ||
| return timestamp; | ||
| } | ||
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| protected long timeGen() { | ||
| return System.currentTimeMillis() / 1000L; | ||
| } | ||
| } |
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71 changes: 71 additions & 0 deletions
71
...scala/org/apache/spark/sql/execution/datasources/utils/MergeTreePartsPartitionsUtil.scala
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| /* | ||
| * Copyright (2021) The Delta Lake Project Authors. | ||
| * | ||
| * 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 org.apache.spark.sql.execution.datasources.utils | ||
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| import io.glutenproject.execution.NativeMergeTreePartition | ||
| import org.apache.spark.sql.SparkSession | ||
| import org.apache.spark.sql.connector.read.InputPartition | ||
| import org.apache.spark.sql.execution.datasources.v2.clickhouse.metadata.AddMergeTreeParts | ||
| import org.apache.spark.sql.execution.datasources.v2.clickhouse.table.ClickHouseTableV2 | ||
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| import scala.collection.mutable.ArrayBuffer | ||
|
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| object MergeTreePartsPartitionsUtil { | ||
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| def getPartsPartitions(sparkSession: SparkSession, | ||
| table: ClickHouseTableV2): Seq[InputPartition] = { | ||
| val maxSplitBytes = sparkSession.sessionState.conf.filesMaxPartitionBytes | ||
| val partsFiles = table.listFiles() | ||
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| val partitions = new ArrayBuffer[InputPartition] | ||
| val database = table.catalogTable.get.identifier.database.get | ||
| val tableName = table.catalogTable.get.identifier.table | ||
| val engine = table.snapshot.metadata.configuration.get("engine").get | ||
| val tablePath = table.deltaLog.dataPath.toString.substring(6) | ||
| var currentMinPartsNum = -1L | ||
| var currentMaxPartsNum = -1L | ||
| var currentSize = 0L | ||
|
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| /** Close the current partition and move to the next. */ | ||
| def closePartition(): Unit = { | ||
| if (currentMinPartsNum > 0L && currentMaxPartsNum >= currentMinPartsNum) { | ||
| val newPartition = NativeMergeTreePartition(partitions.size, engine, database, tableName, | ||
| tablePath, currentMinPartsNum, currentMaxPartsNum + 1) | ||
| partitions += newPartition | ||
| } | ||
| currentMinPartsNum = -1L | ||
| currentMaxPartsNum = -1L | ||
| currentSize = 0 | ||
| } | ||
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| val openCostInBytes = sparkSession.sessionState.conf.filesOpenCostInBytes | ||
| // Assign files to partitions using "Next Fit Decreasing" | ||
| partsFiles.foreach { parts => | ||
| if (currentSize + parts.bytesOnDisk > maxSplitBytes) { | ||
| closePartition() | ||
| } | ||
| // Add the given file to the current partition. | ||
| currentSize += parts.bytesOnDisk + openCostInBytes | ||
| if (currentMinPartsNum == -1L) { | ||
| currentMinPartsNum = parts.minBlockNumber | ||
| } | ||
| currentMaxPartsNum = parts.maxBlockNumber | ||
| } | ||
| closePartition() | ||
| partitions | ||
| } | ||
| } |
101 changes: 101 additions & 0 deletions
101
...se/src/main/scala/org/apache/spark/sql/execution/datasources/v1/ClickHouseFileIndex.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| /* | ||
| * Copyright (2021) The Delta Lake Project Authors. | ||
| * | ||
| * 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 org.apache.spark.sql.execution.datasources.v1 | ||
|
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| import org.apache.hadoop.fs.{FileStatus, Path} | ||
| import org.apache.spark.sql.SparkSession | ||
| import org.apache.spark.sql.catalyst.expressions.{Cast, Expression, GenericInternalRow, Literal} | ||
| import org.apache.spark.sql.connector.read.InputPartition | ||
| import org.apache.spark.sql.delta.actions.AddFile | ||
| import org.apache.spark.sql.delta.{DeltaLog, Snapshot} | ||
| import org.apache.spark.sql.delta.files.TahoeFileIndex | ||
| import org.apache.spark.sql.execution.datasources.PartitionDirectory | ||
| import org.apache.spark.sql.execution.datasources.utils.MergeTreePartsPartitionsUtil | ||
| import org.apache.spark.sql.execution.datasources.v2.clickhouse.table.ClickHouseTableV2 | ||
| import org.apache.spark.sql.types.StructType | ||
|
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| import java.util.Objects | ||
|
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| case class ClickHouseFileIndex(override val spark: SparkSession, | ||
| override val deltaLog: DeltaLog, | ||
| override val path: Path, | ||
| table: ClickHouseTableV2, | ||
| snapshotAtAnalysis: Snapshot, | ||
| partitionFilters: Seq[Expression] = Nil, | ||
| isTimeTravelQuery: Boolean = false) | ||
| extends TahoeFileIndex(spark, deltaLog, path) { | ||
|
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| override def tableVersion: Long = { | ||
| if (isTimeTravelQuery) snapshotAtAnalysis.version else deltaLog.snapshot.version | ||
| } | ||
|
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| protected def getSnapshotToScan: Snapshot = { | ||
| if (isTimeTravelQuery) snapshotAtAnalysis else deltaLog.update(stalenessAcceptable = true) | ||
| } | ||
|
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| /** Provides the version that's being used as part of the scan if this is a time travel query. */ | ||
| def versionToUse: Option[Long] = | ||
| if (isTimeTravelQuery) Some(snapshotAtAnalysis.version) else None | ||
|
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| def getSnapshot: Snapshot = { | ||
| getSnapshotToScan | ||
| } | ||
|
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| override def matchingFiles( | ||
| partitionFilters: Seq[Expression], | ||
| dataFilters: Seq[Expression]): Seq[AddFile] = { | ||
| Seq.empty[AddFile] | ||
| } | ||
|
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| override def inputFiles: Array[String] = { | ||
| table.listFiles().map(_.path).toArray | ||
| } | ||
|
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| override def listFiles(partitionFilters: Seq[Expression], | ||
| dataFilters: Seq[Expression]): Seq[PartitionDirectory] = { | ||
| table.listFiles().map(parts => { | ||
| val fileStats = new FileStatus( | ||
| /* length */ parts.bytesOnDisk, | ||
| /* isDir */ false, | ||
| /* blockReplication */ 0, | ||
| /* blockSize */ 1, | ||
| /* modificationTime */ parts.modificationTime, | ||
| absolutePath(parts.path)) | ||
| PartitionDirectory(new GenericInternalRow(Array.empty[Any]), Seq(fileStats)) | ||
| }) | ||
| } | ||
|
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| def partsPartitions: Seq[InputPartition] = | ||
| MergeTreePartsPartitionsUtil.getPartsPartitions(spark, table) | ||
|
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| override def refresh(): Unit = {} | ||
|
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| override val sizeInBytes: Long = table.listFiles().map(_.bytesOnDisk).sum | ||
|
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| override def equals(that: Any): Boolean = that match { | ||
| case t: ClickHouseFileIndex => | ||
| t.path == path && t.deltaLog.isSameLogAs(deltaLog) && | ||
| t.versionToUse == versionToUse && t.partitionFilters == partitionFilters | ||
| case _ => false | ||
| } | ||
|
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| override def hashCode: scala.Int = { | ||
| Objects.hashCode(path, deltaLog.tableId -> deltaLog.dataPath, versionToUse, partitionFilters) | ||
| } | ||
|
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| override def partitionSchema: StructType = snapshotAtAnalysis.metadata.partitionSchema | ||
| } |
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