hubgeter commented on code in PR #65851: URL: https://github.com/apache/doris/pull/65851#discussion_r3657812374
########## fe/fe-core/src/main/java/org/apache/doris/datasource/iceberg/IcebergWriteSchemaContext.java: ########## @@ -0,0 +1,452 @@ +// 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.doris.datasource.iceberg; + +import org.apache.doris.catalog.Column; +import org.apache.doris.nereids.exceptions.AnalysisException; +import org.apache.doris.nereids.trees.expressions.Expression; +import org.apache.doris.nereids.trees.expressions.functions.scalar.Array; +import org.apache.doris.nereids.trees.expressions.functions.scalar.CreateMap; +import org.apache.doris.nereids.trees.expressions.functions.scalar.CreateNamedStruct; +import org.apache.doris.nereids.trees.expressions.functions.scalar.Unhex; +import org.apache.doris.nereids.trees.expressions.literal.ArrayLiteral; +import org.apache.doris.nereids.trees.expressions.literal.BigIntLiteral; +import org.apache.doris.nereids.trees.expressions.literal.BooleanLiteral; +import org.apache.doris.nereids.trees.expressions.literal.DateTimeV2Literal; +import org.apache.doris.nereids.trees.expressions.literal.DateV2Literal; +import org.apache.doris.nereids.trees.expressions.literal.DecimalV3Literal; +import org.apache.doris.nereids.trees.expressions.literal.DoubleLiteral; +import org.apache.doris.nereids.trees.expressions.literal.FloatLiteral; +import org.apache.doris.nereids.trees.expressions.literal.IntegerLiteral; +import org.apache.doris.nereids.trees.expressions.literal.Literal; +import org.apache.doris.nereids.trees.expressions.literal.MapLiteral; +import org.apache.doris.nereids.trees.expressions.literal.NullLiteral; +import org.apache.doris.nereids.trees.expressions.literal.StringLiteral; +import org.apache.doris.nereids.trees.expressions.literal.StructLiteral; +import org.apache.doris.nereids.trees.expressions.literal.TimestampTzLiteral; +import org.apache.doris.nereids.trees.expressions.literal.VarBinaryLiteral; +import org.apache.doris.nereids.types.DataType; +import org.apache.doris.nereids.types.DateTimeV2Type; +import org.apache.doris.nereids.types.DecimalV3Type; +import org.apache.doris.nereids.types.StructType; +import org.apache.doris.nereids.types.TimeStampTzType; +import org.apache.doris.nereids.types.VarBinaryType; +import org.apache.doris.nereids.util.TypeCoercionUtils; + +import com.google.common.annotations.VisibleForTesting; +import com.google.common.base.Preconditions; +import com.google.common.collect.ImmutableList; +import com.google.common.collect.ImmutableMap; +import com.google.common.io.BaseEncoding; +import org.apache.iceberg.Schema; +import org.apache.iceberg.SchemaParser; +import org.apache.iceberg.SnapshotRef; +import org.apache.iceberg.StructLike; +import org.apache.iceberg.Table; +import org.apache.iceberg.types.Type; +import org.apache.iceberg.types.Types; +import org.apache.iceberg.util.SnapshotUtil; + +import java.math.BigDecimal; +import java.nio.ByteBuffer; +import java.time.Instant; +import java.time.LocalDate; +import java.time.LocalDateTime; +import java.time.ZoneOffset; +import java.util.ArrayList; +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.Optional; +import java.util.UUID; + +/** + * Statement-scoped Iceberg write schema and write-default values. + * + * <p>The context pins one Iceberg schema before analysis. The analyzer, planner sink and + * transaction preflight must all use this same instance so a concurrent schema change cannot + * combine expressions from one schema with a writer schema from another one. + */ +public final class IcebergWriteSchemaContext { + private final long tableId; + private final String tableName; + private final Schema schema; + private final int formatVersion; + private final Optional<String> branchName; + private final String schemaJson; + private final String mergeSchemaJson; + private final List<Column> columns; + private final List<Column> mergeColumns; + private final Map<Integer, Types.NestedField> fieldsById; + private final Map<Integer, Expression> writeDefaultsById; + + /** Pin the current main or branch schema under the catalog authentication boundary. */ + public static IcebergWriteSchemaContext create( + IcebergExternalTable dorisTable, Optional<String> branchName) { + Objects.requireNonNull(dorisTable, "dorisTable should not be null"); + Objects.requireNonNull(branchName, "branchName should not be null"); + try { + return dorisTable.getCatalog().getExecutionAuthenticator().execute(() -> { + Table table = dorisTable.getIcebergTable(); + table.refresh(); Review Comment: Fixed in 0dd1a86a681. Planning no longer calls refresh on the shared cached Table. Main-table writes pin the statement MVCC schema; branch writes pin the branch-head snapshot schema. Transaction start loads a fresh independent Table through metadata ops inside the authentication boundary and validates the pinned schema there, avoiding cross-statement mutation and remote I/O under the table read lock. ########## fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/RewriteDefaultExpression.java: ########## @@ -82,6 +83,16 @@ private static Expression rewrite(ExpressionMatchingContext<Default> context) { + column.getName() + "'"); } + Optional<IcebergWriteSchemaContext> icebergContext = context.cascadesContext + .getStatementContext().getIcebergWriteSchemaContext(); + if (icebergContext.isPresent() + && slotRef.getOriginalTable() + .map(table -> icebergContext.get().isTargetTable(table.getId())) + .orElse(false) + && icebergContext.get().findField(column).isPresent()) { + return icebergContext.get().resolveWriteDefault(column); Review Comment: Fixed in 0dd1a86a681. UPDATE and matched MERGE now share the pinned Iceberg write context with expression rewriting, so DEFAULT(column) resolves the referenced field write-default instead of falling through to NULL. The context is scoped and restored for run and explain, with focused unit and Parquet/ORC regression coverage. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
