| /// * |
| // * 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.accumulo.examples.filedata; |
| // |
| // import java.io.IOException; |
| // import java.io.InputStream; |
| // import java.util.ArrayList; |
| // import java.util.List; |
| // import java.util.Map.Entry; |
| // |
| // import org.apache.accumulo.core.data.Key; |
| // import org.apache.accumulo.core.data.Value; |
| // import org.apache.accumulo.examples.util.FormatUtil; |
| // import org.apache.hadoop.mapreduce.InputSplit; |
| // import org.apache.hadoop.mapreduce.RecordReader; |
| // import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| // |
| // import com.google.common.collect.Iterators; |
| // import com.google.common.collect.PeekingIterator; |
| // |
| /// ** |
| // * An InputFormat that turns the file data ingested with {@link FileDataIngest} into an |
| /// InputStream |
| // * using {@link ChunkInputStream}. Mappers used with this InputFormat must close the InputStream. |
| // */ |
| // @SuppressWarnings("deprecation") |
| // public class ChunkInputFormat extends |
| // org.apache.accumulo.core.client.mapreduce.InputFormatBase<List<Entry<Key,Value>>,InputStream> { |
| // @Override |
| // public RecordReader<List<Entry<Key,Value>>,InputStream> createRecordReader(InputSplit split, |
| // TaskAttemptContext context) { |
| // return new RecordReaderBase<>() { |
| // private PeekingIterator<Entry<Key,Value>> peekingScannerIterator; |
| // |
| // @Override |
| // public void initialize(InputSplit inSplit, TaskAttemptContext attempt) throws IOException { |
| // super.initialize(inSplit, attempt); |
| // peekingScannerIterator = Iterators.peekingIterator(scannerIterator); |
| // currentK = new ArrayList<>(); |
| // currentV = new ChunkInputStream(); |
| // } |
| // |
| // @Override |
| // public boolean nextKeyValue() throws IOException { |
| // log.debug("nextKeyValue called"); |
| // |
| // currentK.clear(); |
| // if (peekingScannerIterator.hasNext()) { |
| // ++numKeysRead; |
| // Entry<Key,Value> entry = peekingScannerIterator.peek(); |
| // while (!entry.getKey().getColumnFamily().equals(FileDataIngest.CHUNK_CF)) { |
| // currentK.add(entry); |
| // peekingScannerIterator.next(); |
| // if (!peekingScannerIterator.hasNext()) { |
| // return true; |
| // } |
| // entry = peekingScannerIterator.peek(); |
| // } |
| // currentKey = entry.getKey(); |
| // ((ChunkInputStream) currentV).setSource(peekingScannerIterator); |
| // if (log.isTraceEnabled()) { |
| // log.trace("Processing key/value pair: " + FormatUtil.formatTableEntry(entry, true)); |
| // } |
| // |
| // return true; |
| // } |
| // return false; |
| // } |
| // }; |
| // } |
| // } |
