| /* |
| * 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.drill.exec.physical.impl.svremover; |
| |
| import org.apache.drill.exec.exception.OutOfMemoryException; |
| import org.apache.drill.exec.ops.FragmentContext; |
| import org.apache.drill.exec.physical.config.SelectionVectorRemover; |
| import org.apache.drill.exec.record.AbstractSingleRecordBatch; |
| import org.apache.drill.exec.record.BatchSchema.SelectionVectorMode; |
| import org.apache.drill.exec.record.RecordBatch; |
| import org.apache.drill.exec.record.WritableBatch; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class RemovingRecordBatch extends AbstractSingleRecordBatch<SelectionVectorRemover>{ |
| private static final Logger logger = LoggerFactory.getLogger(RemovingRecordBatch.class); |
| |
| private Copier copier; |
| |
| public RemovingRecordBatch(SelectionVectorRemover popConfig, FragmentContext context, |
| RecordBatch incoming) throws OutOfMemoryException { |
| super(popConfig, context, incoming); |
| logger.debug("Created."); |
| } |
| |
| @Override |
| public int getRecordCount() { |
| return container.getRecordCount(); |
| } |
| |
| @Override |
| protected boolean setupNewSchema() { |
| // Don't clear off container just because an OK_NEW_SCHEMA was received from |
| // upstream. For cases when there is just |
| // change in container type but no actual schema change, RemovingRecordBatch |
| // should consume OK_NEW_SCHEMA and |
| // send OK to downstream instead. Since the output of RemovingRecordBatch is |
| // always going to be a regular container |
| // change in incoming container type is not actual schema change. |
| container.zeroVectors(); |
| copier = GenericCopierFactory.createAndSetupCopier(incoming, container, callBack); |
| |
| // If there is an actual schema change then below condition will be true and |
| // it will send OK_NEW_SCHEMA |
| // downstream too |
| if (container.isSchemaChanged()) { |
| container.buildSchema(SelectionVectorMode.NONE); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| @Override |
| protected IterOutcome doWork() { |
| try { |
| int rowCount = incoming.getRecordCount(); |
| if (rowCount == 0) { |
| container.setEmpty(); |
| } else { |
| copier.copyRecords(0, rowCount); |
| } |
| } catch (Exception e) { |
| throw new IllegalStateException(e); |
| } finally { |
| if (incoming.getSchema().getSelectionVectorMode() != SelectionVectorMode.FOUR_BYTE) { |
| incoming.getContainer().zeroVectors(); |
| if (incoming.getSchema().getSelectionVectorMode() == SelectionVectorMode.TWO_BYTE) { |
| incoming.getSelectionVector2().clear(); |
| } |
| } |
| } |
| |
| logger.debug("doWork(): {} records copied out of {}, incoming schema {} ", |
| container.getRecordCount(), container.getRecordCount(), incoming.getSchema()); |
| return getFinalOutcome(false); |
| } |
| |
| @Override |
| public void close() { |
| super.close(); |
| } |
| |
| @Override |
| public WritableBatch getWritableBatch() { |
| return WritableBatch.get(this); |
| } |
| |
| @Override |
| public void dump() { |
| logger.error("RemovingRecordBatch[container={}, state={}, copier={}]", container, state, copier); |
| } |
| } |