| /* |
| * 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.iceberg; |
| |
| import org.apache.iceberg.expressions.Expression; |
| import org.apache.iceberg.io.CloseableIterable; |
| import org.apache.iceberg.relocated.com.google.common.base.Preconditions; |
| import org.apache.iceberg.relocated.com.google.common.collect.ImmutableList; |
| import org.apache.iceberg.util.ThreadPools; |
| |
| public class DataTableScan extends BaseTableScan { |
| static final ImmutableList<String> SCAN_COLUMNS = ImmutableList.of( |
| "snapshot_id", "file_path", "file_ordinal", "file_format", "block_size_in_bytes", |
| "file_size_in_bytes", "record_count", "partition", "key_metadata" |
| ); |
| static final ImmutableList<String> SCAN_WITH_STATS_COLUMNS = ImmutableList.<String>builder() |
| .addAll(SCAN_COLUMNS) |
| .add("value_counts", "null_value_counts", "lower_bounds", "upper_bounds", "column_sizes") |
| .build(); |
| static final boolean PLAN_SCANS_WITH_WORKER_POOL = |
| SystemProperties.getBoolean(SystemProperties.SCAN_THREAD_POOL_ENABLED, true); |
| |
| public DataTableScan(TableOperations ops, Table table) { |
| super(ops, table, table.schema()); |
| } |
| |
| protected DataTableScan(TableOperations ops, Table table, Schema schema, TableScanContext context) { |
| super(ops, table, schema, context); |
| } |
| |
| @Override |
| public TableScan appendsBetween(long fromSnapshotId, long toSnapshotId) { |
| Long scanSnapshotId = snapshotId(); |
| Preconditions.checkState(scanSnapshotId == null, |
| "Cannot enable incremental scan, scan-snapshot set to id=%s", scanSnapshotId); |
| return new IncrementalDataTableScan(tableOps(), table(), schema(), |
| context().fromSnapshotId(fromSnapshotId).toSnapshotId(toSnapshotId)); |
| } |
| |
| @Override |
| public TableScan appendsAfter(long fromSnapshotId) { |
| Snapshot currentSnapshot = table().currentSnapshot(); |
| Preconditions.checkState(currentSnapshot != null, "Cannot scan appends after %s, there is no current snapshot", |
| fromSnapshotId); |
| return appendsBetween(fromSnapshotId, currentSnapshot.snapshotId()); |
| } |
| |
| @Override |
| protected TableScan newRefinedScan(TableOperations ops, Table table, Schema schema, TableScanContext context) { |
| return new DataTableScan(ops, table, schema, context); |
| } |
| |
| @Override |
| public CloseableIterable<FileScanTask> planFiles(TableOperations ops, Snapshot snapshot, |
| Expression rowFilter, boolean ignoreResiduals, |
| boolean caseSensitive, boolean colStats) { |
| ManifestGroup manifestGroup = new ManifestGroup(ops.io(), snapshot.dataManifests(), snapshot.deleteManifests()) |
| .caseSensitive(caseSensitive) |
| .select(colStats ? SCAN_WITH_STATS_COLUMNS : SCAN_COLUMNS) |
| .filterData(rowFilter) |
| .specsById(ops.current().specsById()) |
| .ignoreDeleted(); |
| |
| if (ignoreResiduals) { |
| manifestGroup = manifestGroup.ignoreResiduals(); |
| } |
| |
| if (PLAN_SCANS_WITH_WORKER_POOL && snapshot.dataManifests().size() > 1) { |
| manifestGroup = manifestGroup.planWith(ThreadPools.getWorkerPool()); |
| } |
| |
| return manifestGroup.planFiles(); |
| } |
| |
| @Override |
| protected long targetSplitSize(TableOperations ops) { |
| return ops.current().propertyAsLong( |
| TableProperties.SPLIT_SIZE, TableProperties.SPLIT_SIZE_DEFAULT); |
| } |
| } |