| /** |
| * 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.tajo.storage.hbase; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.Cell; |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.io.ImmutableBytesWritable; |
| import org.apache.hadoop.hbase.mapreduce.HFileOutputFormat2; |
| import org.apache.hadoop.mapreduce.RecordWriter; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| import org.apache.hadoop.mapreduce.TaskAttemptID; |
| import org.apache.hadoop.mapreduce.TaskType; |
| import org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter; |
| import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; |
| import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl; |
| import org.apache.tajo.ExecutionBlockId; |
| import org.apache.tajo.TaskAttemptId; |
| import org.apache.tajo.TajoConstants; |
| import org.apache.tajo.catalog.Schema; |
| import org.apache.tajo.catalog.TableMeta; |
| import org.apache.tajo.datum.Datum; |
| import org.apache.tajo.storage.Tuple; |
| import org.apache.tajo.util.Bytes; |
| |
| import java.io.IOException; |
| import java.util.TreeSet; |
| |
| public class HFileAppender extends AbstractHBaseAppender { |
| private static final Log LOG = LogFactory.getLog(HFileAppender.class); |
| |
| private RecordWriter<ImmutableBytesWritable, Cell> writer; |
| private TaskAttemptContext writerContext; |
| private Path workingFilePath; |
| private FileOutputCommitter committer; |
| |
| public HFileAppender(Configuration conf, TaskAttemptId taskAttemptId, |
| Schema schema, TableMeta meta, Path stagingDir) { |
| super(conf, taskAttemptId, schema, meta, stagingDir); |
| } |
| |
| @Override |
| public void init() throws IOException { |
| super.init(); |
| |
| Configuration taskConf = new Configuration(); |
| Path stagingResultDir = new Path(stagingDir, TajoConstants.RESULT_DIR_NAME); |
| taskConf.set(FileOutputFormat.OUTDIR, stagingResultDir.toString()); |
| |
| ExecutionBlockId ebId = taskAttemptId.getTaskId().getExecutionBlockId(); |
| writerContext = new TaskAttemptContextImpl(taskConf, |
| new TaskAttemptID(ebId.getQueryId().toString(), ebId.getId(), TaskType.MAP, |
| taskAttemptId.getTaskId().getId(), taskAttemptId.getId())); |
| |
| HFileOutputFormat2 hFileOutputFormat2 = new HFileOutputFormat2(); |
| try { |
| writer = hFileOutputFormat2.getRecordWriter(writerContext); |
| |
| committer = new FileOutputCommitter(FileOutputFormat.getOutputPath(writerContext), writerContext); |
| workingFilePath = committer.getWorkPath(); |
| } catch (InterruptedException e) { |
| throw new IOException(e.getMessage(), e); |
| } |
| |
| LOG.info("Created hbase file writer: " + workingFilePath); |
| } |
| |
| long totalNumBytes = 0; |
| ImmutableBytesWritable keyWritable = new ImmutableBytesWritable(); |
| boolean first = true; |
| TreeSet<KeyValue> kvSet = new TreeSet<KeyValue>(KeyValue.COMPARATOR); |
| |
| |
| @Override |
| public void addTuple(Tuple tuple) throws IOException { |
| Datum datum; |
| |
| byte[] rowkey = getRowKeyBytes(tuple); |
| |
| if (!first && !Bytes.equals(keyWritable.get(), 0, keyWritable.getLength(), rowkey, 0, rowkey.length)) { |
| try { |
| for (KeyValue kv : kvSet) { |
| writer.write(keyWritable, kv); |
| totalNumBytes += keyWritable.getLength() + kv.getLength(); |
| } |
| kvSet.clear(); |
| // Statistical section |
| if (tableStatsEnabled) { |
| stats.incrementRow(); |
| } |
| } catch (InterruptedException e) { |
| LOG.error(e.getMessage(), e); |
| } |
| } |
| |
| first = false; |
| |
| keyWritable.set(rowkey); |
| |
| readKeyValues(tuple, rowkey); |
| if (keyValues != null) { |
| for (KeyValue eachKeyVal: keyValues) { |
| kvSet.add(eachKeyVal); |
| } |
| } |
| } |
| |
| @Override |
| public void flush() throws IOException { |
| } |
| |
| @Override |
| public long getEstimatedOutputSize() throws IOException { |
| // StoreTableExec uses this value as rolling file length |
| // Not rolling |
| return 0; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| if (!kvSet.isEmpty()) { |
| try { |
| for (KeyValue kv : kvSet) { |
| writer.write(keyWritable, kv); |
| totalNumBytes += keyWritable.getLength() + keyWritable.getLength(); |
| } |
| kvSet.clear(); |
| // Statistical section |
| if (tableStatsEnabled) { |
| stats.incrementRow(); |
| } |
| } catch (InterruptedException e) { |
| LOG.error(e.getMessage(), e); |
| } |
| } |
| |
| if (tableStatsEnabled) { |
| stats.setNumBytes(totalNumBytes); |
| } |
| if (writer != null) { |
| try { |
| writer.close(writerContext); |
| committer.commitTask(writerContext); |
| } catch (InterruptedException e) { |
| } |
| } |
| } |
| } |