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[GLUTEN-10215][VL] Delta write: Native top-level NOT NULL checks #12030
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100 changes: 100 additions & 0 deletions
100
...lta33/main/scala/org/apache/spark/sql/delta/constraints/GlutenDeltaInvariantChecker.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
| package org.apache.spark.sql.delta.constraints | ||
|
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| import org.apache.gluten.columnarbatch.VeloxColumnarBatches | ||
| import org.apache.gluten.execution.{PlaceholderRow, TerminalRow} | ||
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| import org.apache.spark.sql.catalyst.InternalRow | ||
| import org.apache.spark.sql.catalyst.expressions.Attribute | ||
| import org.apache.spark.sql.delta.constraints.Constraints.NotNull | ||
| import org.apache.spark.sql.delta.schema.{DeltaInvariantViolationException, SchemaUtils} | ||
| import org.apache.spark.sql.vectorized.ColumnarBatch | ||
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| /** | ||
| * Native write-time invariant checker for constraints that can be validated without converting | ||
| * Velox batches back to Spark rows. | ||
| */ | ||
| private[delta] case class GlutenDeltaInvariantChecker private ( | ||
| notNullConstraints: Seq[(Int, NotNull)]) | ||
| extends Serializable { | ||
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| @transient private lazy val columnOrdinals: Array[Int] = | ||
| notNullConstraints.map(_._1).toArray | ||
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|
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| def wrap(rows: Iterator[InternalRow]): Iterator[InternalRow] = { | ||
| rows.map { | ||
| row => | ||
| check(row) | ||
| row | ||
| } | ||
| } | ||
|
|
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| private def check(row: InternalRow): Unit = row match { | ||
| case _: PlaceholderRow => | ||
| case terminal: TerminalRow => check(terminal.batch()) | ||
| case other => checkRow(other) | ||
| } | ||
|
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| private def check(batch: ColumnarBatch): Unit = { | ||
| val failedConstraintIndex = VeloxColumnarBatches.firstNullColumnIndex(batch, columnOrdinals) | ||
| if (failedConstraintIndex >= 0) { | ||
| throw DeltaInvariantViolationException(notNullConstraints(failedConstraintIndex)._2) | ||
| } | ||
| } | ||
|
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| private def checkRow(row: InternalRow): Unit = { | ||
| var i = 0 | ||
| while (i < notNullConstraints.size) { | ||
| val (ordinal, constraint) = notNullConstraints(i) | ||
| if (row.isNullAt(ordinal)) { | ||
| throw DeltaInvariantViolationException(constraint) | ||
| } | ||
| i += 1 | ||
| } | ||
| } | ||
| } | ||
|
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| private[delta] object GlutenDeltaInvariantChecker { | ||
| def create( | ||
| output: Seq[Attribute], | ||
| constraints: Seq[Constraint]): Option[GlutenDeltaInvariantChecker] = { | ||
| if (constraints.isEmpty) { | ||
| return None | ||
| } | ||
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| val topLevelNotNullConstraints = constraints.collect { | ||
| case constraint: NotNull if constraint.column.length == 1 => constraint | ||
| } | ||
| if (topLevelNotNullConstraints.size != constraints.size) { | ||
| return None | ||
| } | ||
|
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| val checks = topLevelNotNullConstraints.map { | ||
| constraint => | ||
| val columnName = constraint.column.head | ||
| val ordinal = output.indexWhere { | ||
| attribute => SchemaUtils.DELTA_COL_RESOLVER(attribute.name, columnName) | ||
| } | ||
| if (ordinal < 0) { | ||
| return None | ||
| } | ||
| ordinal -> constraint | ||
| } | ||
| Some(GlutenDeltaInvariantChecker(checks)) | ||
| } | ||
| } | ||
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Compared to adding a runtime check, can we offload https://github.com/delta-io/delta/blob/ff715542a7b5b3aa6f0809b7a2c9b1760566ef60/spark/src/main/scala/org/apache/spark/sql/delta/constraints/CheckDeltaInvariant.scala#L35 to Velox instead?