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[CALCITE-2040] Create adapter for Apache Arrow
Co-authored-by: Jonathan Swenson <[email protected]> Co-authored-by: Julian Hyde <[email protected]> Co-authored-by: Karshit Shah <[email protected]> Co-authored-by: Michael Mior <[email protected]>
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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. | ||
| */ | ||
| dependencies { | ||
| api(project(":core")) | ||
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|
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| implementation("com.google.guava:guava") | ||
| implementation("org.apache.arrow:arrow-memory-netty") | ||
| implementation("org.apache.arrow:arrow-vector") | ||
| implementation("org.apache.arrow.gandiva:arrow-gandiva") | ||
| annotationProcessor("org.immutables:value") | ||
| compileOnly("org.immutables:value-annotations") | ||
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|
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| testImplementation("org.apache.arrow:arrow-jdbc") | ||
| testImplementation("net.hydromatic:scott-data-hsqldb") | ||
| testImplementation("org.apache.commons:commons-lang3") | ||
| testImplementation(project(":core")) | ||
| testImplementation(project(":testkit")) | ||
| } |
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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. | ||
| # | ||
| description=Arrow adapter for Calcite | ||
| artifact.name=Calcite Arrow |
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55
arrow/src/main/java/org/apache/calcite/adapter/arrow/ArrowEnumerable.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. | ||
| */ | ||
| package org.apache.calcite.adapter.arrow; | ||
|
|
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| import org.apache.calcite.linq4j.AbstractEnumerable; | ||
| import org.apache.calcite.linq4j.Enumerator; | ||
| import org.apache.calcite.util.ImmutableIntList; | ||
| import org.apache.calcite.util.Util; | ||
|
|
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| import org.apache.arrow.gandiva.evaluator.Filter; | ||
| import org.apache.arrow.gandiva.evaluator.Projector; | ||
| import org.apache.arrow.vector.ipc.ArrowFileReader; | ||
|
|
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| import org.checkerframework.checker.nullness.qual.Nullable; | ||
|
|
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| /** | ||
| * Enumerable that reads from Arrow value-vectors. | ||
| */ | ||
| class ArrowEnumerable extends AbstractEnumerable<Object> { | ||
| private final ArrowFileReader arrowFileReader; | ||
| private final @Nullable Projector projector; | ||
| private final @Nullable Filter filter; | ||
| private final ImmutableIntList fields; | ||
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| ArrowEnumerable(ArrowFileReader arrowFileReader, | ||
| @Nullable Projector projector, @Nullable Filter filter, | ||
| ImmutableIntList fields) { | ||
| this.arrowFileReader = arrowFileReader; | ||
| this.projector = projector; | ||
| this.filter = filter; | ||
| this.fields = fields; | ||
| } | ||
|
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| @Override public Enumerator<Object> enumerator() { | ||
| try { | ||
| return new ArrowEnumerator(projector, filter, fields, arrowFileReader); | ||
| } catch (Exception e) { | ||
| throw Util.toUnchecked(e); | ||
| } | ||
| } | ||
| } |
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184
arrow/src/main/java/org/apache/calcite/adapter/arrow/ArrowEnumerator.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. | ||
| */ | ||
| package org.apache.calcite.adapter.arrow; | ||
|
|
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| import org.apache.calcite.linq4j.Enumerator; | ||
| import org.apache.calcite.util.ImmutableIntList; | ||
| import org.apache.calcite.util.Util; | ||
|
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| import org.apache.arrow.gandiva.evaluator.Filter; | ||
| import org.apache.arrow.gandiva.evaluator.Projector; | ||
| import org.apache.arrow.gandiva.evaluator.SelectionVector; | ||
| import org.apache.arrow.gandiva.evaluator.SelectionVectorInt16; | ||
| import org.apache.arrow.gandiva.exceptions.GandivaException; | ||
| import org.apache.arrow.memory.ArrowBuf; | ||
| import org.apache.arrow.memory.BufferAllocator; | ||
| import org.apache.arrow.memory.RootAllocator; | ||
| import org.apache.arrow.vector.ValueVector; | ||
| import org.apache.arrow.vector.VectorSchemaRoot; | ||
| import org.apache.arrow.vector.VectorUnloader; | ||
| import org.apache.arrow.vector.ipc.ArrowFileReader; | ||
| import org.apache.arrow.vector.ipc.message.ArrowRecordBatch; | ||
|
|
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| import org.checkerframework.checker.nullness.qual.Nullable; | ||
|
|
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| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
|
|
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| /** | ||
| * Enumerator that reads from a collection of Arrow value-vectors. | ||
| */ | ||
| class ArrowEnumerator implements Enumerator<Object> { | ||
| private final BufferAllocator allocator; | ||
| private final ArrowFileReader arrowFileReader; | ||
| private final @Nullable Projector projector; | ||
| private final @Nullable Filter filter; | ||
| private int rowIndex = -1; | ||
| private final List<ValueVector> valueVectors; | ||
| private final List<Integer> fields; | ||
| private int rowSize; | ||
| private @Nullable ArrowBuf buf; | ||
| private @Nullable SelectionVector selectionVector; | ||
| private int selectionVectorIndex = 0; | ||
|
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| ArrowEnumerator(@Nullable Projector projector, @Nullable Filter filter, | ||
| ImmutableIntList fields, ArrowFileReader arrowFileReader) { | ||
| this.allocator = new RootAllocator(Long.MAX_VALUE); | ||
| this.projector = projector; | ||
| this.filter = filter; | ||
| this.arrowFileReader = arrowFileReader; | ||
| this.fields = fields; | ||
| this.valueVectors = new ArrayList<>(fields.size()); | ||
|
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| // Set up fields so that first call to moveNext() will trigger a call to | ||
| // loadNextBatch(). | ||
| if (projector != null) { | ||
| rowIndex = rowSize = 0; | ||
| } else { | ||
| selectionVector = null; | ||
| selectionVectorIndex = 0; | ||
| } | ||
| } | ||
|
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| @Override public Object current() { | ||
| if (fields.size() == 1) { | ||
| return this.valueVectors.get(0).getObject(rowIndex); | ||
| } | ||
| Object[] current = new Object[valueVectors.size()]; | ||
| for (int i = 0; i < valueVectors.size(); i++) { | ||
| ValueVector vector = this.valueVectors.get(i); | ||
| current[i] = vector.getObject(rowIndex); | ||
| } | ||
| return current; | ||
| } | ||
|
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| @Override public boolean moveNext() { | ||
| if (projector != null) { | ||
| if (rowIndex >= rowSize - 1) { | ||
| final boolean hasNextBatch; | ||
| try { | ||
| hasNextBatch = arrowFileReader.loadNextBatch(); | ||
| } catch (IOException e) { | ||
| throw Util.toUnchecked(e); | ||
| } | ||
| if (hasNextBatch) { | ||
| rowIndex = 0; | ||
| this.valueVectors.clear(); | ||
| loadNextArrowBatch(); | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| } else { | ||
| rowIndex++; | ||
| return true; | ||
| } | ||
| } else { | ||
| if (selectionVector == null | ||
| || selectionVectorIndex >= selectionVector.getRecordCount()) { | ||
| boolean hasNextBatch; | ||
| while (true) { | ||
| try { | ||
| hasNextBatch = arrowFileReader.loadNextBatch(); | ||
| } catch (IOException e) { | ||
| throw Util.toUnchecked(e); | ||
| } | ||
| if (hasNextBatch) { | ||
| selectionVectorIndex = 0; | ||
| this.valueVectors.clear(); | ||
| loadNextArrowBatch(); | ||
| assert selectionVector != null; | ||
| if (selectionVectorIndex >= selectionVector.getRecordCount()) { | ||
| // the "filtered" batch is empty, but there may be more batches to fetch | ||
| continue; | ||
| } | ||
| rowIndex = selectionVector.getIndex(selectionVectorIndex++); | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| } | ||
| } else { | ||
| rowIndex = selectionVector.getIndex(selectionVectorIndex++); | ||
| return true; | ||
| } | ||
| } | ||
| } | ||
|
|
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| private void loadNextArrowBatch() { | ||
| try { | ||
| final VectorSchemaRoot vsr = arrowFileReader.getVectorSchemaRoot(); | ||
| for (int i : fields) { | ||
| this.valueVectors.add(vsr.getVector(i)); | ||
| } | ||
| this.rowSize = vsr.getRowCount(); | ||
| VectorUnloader vectorUnloader = new VectorUnloader(vsr); | ||
| ArrowRecordBatch arrowRecordBatch = vectorUnloader.getRecordBatch(); | ||
| if (projector != null) { | ||
| projector.evaluate(arrowRecordBatch, valueVectors); | ||
| } | ||
| if (filter != null) { | ||
| this.buf = this.allocator.buffer(rowSize * 2); | ||
| this.selectionVector = new SelectionVectorInt16(buf); | ||
| filter.evaluate(arrowRecordBatch, selectionVector); | ||
| } | ||
| } catch (IOException | GandivaException e) { | ||
| throw Util.toUnchecked(e); | ||
| } | ||
| } | ||
|
|
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| @Override public void reset() { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
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| @Override public void close() { | ||
| try { | ||
| if (projector != null) { | ||
| projector.close(); | ||
| } | ||
| if (filter != null) { | ||
| if (buf != null) { | ||
| buf.close(); | ||
| } | ||
| filter.close(); | ||
| } | ||
| } catch (GandivaException e) { | ||
| throw Util.toUnchecked(e); | ||
| } | ||
| } | ||
| } |
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