| /* |
| * 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.phoenix.mapreduce.index; |
| |
| import java.io.IOException; |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.sql.SQLException; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Properties; |
| import java.util.UUID; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.client.Mutation; |
| import org.apache.hadoop.hbase.io.ImmutableBytesWritable; |
| import org.apache.hadoop.hbase.util.Pair; |
| import org.apache.hadoop.io.IntWritable; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.mapreduce.Mapper; |
| import org.apache.phoenix.execute.MutationState; |
| import org.apache.phoenix.jdbc.PhoenixConnection; |
| import org.apache.phoenix.mapreduce.PhoenixJobCounters; |
| import org.apache.phoenix.mapreduce.util.ConnectionUtil; |
| import org.apache.phoenix.mapreduce.util.PhoenixConfigurationUtil; |
| import org.apache.phoenix.query.ConnectionQueryServices; |
| import org.apache.phoenix.query.QueryServices; |
| import org.apache.phoenix.query.QueryServicesOptions; |
| import org.apache.phoenix.util.ColumnInfo; |
| import org.apache.phoenix.util.PhoenixRuntime; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Mapper that hands over rows from data table to the index table. |
| */ |
| public class PhoenixIndexImportDirectMapper extends |
| Mapper<NullWritable, PhoenixIndexDBWritable, ImmutableBytesWritable, IntWritable> { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(PhoenixIndexImportDirectMapper.class); |
| |
| private final PhoenixIndexDBWritable indxWritable = new PhoenixIndexDBWritable(); |
| |
| private List<ColumnInfo> indxTblColumnMetadata; |
| |
| private Connection connection; |
| |
| private PreparedStatement pStatement; |
| |
| private DirectHTableWriter writer; |
| |
| private int batchSize; |
| private long batchSizeBytes; |
| |
| private MutationState mutationState; |
| private int currentBatchCount = 0; |
| |
| |
| @Override |
| protected void setup(final Context context) throws IOException, InterruptedException { |
| super.setup(context); |
| final Configuration configuration = context.getConfiguration(); |
| writer = new DirectHTableWriter(configuration); |
| |
| try { |
| indxTblColumnMetadata = |
| PhoenixConfigurationUtil.getUpsertColumnMetadataList(configuration); |
| indxWritable.setColumnMetadata(indxTblColumnMetadata); |
| |
| final Properties overrideProps = new Properties(); |
| String scn = configuration.get(PhoenixConfigurationUtil.CURRENT_SCN_VALUE); |
| String txScnValue = configuration.get(PhoenixConfigurationUtil.TX_SCN_VALUE); |
| if(txScnValue==null) { |
| overrideProps.put(PhoenixRuntime.BUILD_INDEX_AT_ATTRIB, scn); |
| } |
| connection = ConnectionUtil.getOutputConnection(configuration, overrideProps); |
| connection.setAutoCommit(false); |
| // Get BatchSize, which is in terms of rows |
| ConnectionQueryServices services = ((PhoenixConnection) connection).getQueryServices(); |
| int maxSize = |
| services.getProps().getInt(QueryServices.MAX_MUTATION_SIZE_ATTRIB, |
| QueryServicesOptions.DEFAULT_MAX_MUTATION_SIZE); |
| batchSize = Math.min(((PhoenixConnection) connection).getMutateBatchSize(), maxSize); |
| |
| //Get batch size in terms of bytes |
| batchSizeBytes = ((PhoenixConnection) connection).getMutateBatchSizeBytes(); |
| |
| LOGGER.info("Mutation Batch Size = " + batchSize); |
| |
| final String upsertQuery = PhoenixConfigurationUtil.getUpsertStatement(configuration); |
| this.pStatement = connection.prepareStatement(upsertQuery); |
| |
| } catch (Exception e) { |
| tryClosingResources(); |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| protected void map(NullWritable key, PhoenixIndexDBWritable record, Context context) |
| throws IOException, InterruptedException { |
| |
| try { |
| currentBatchCount++; |
| final List<Object> values = record.getValues(); |
| indxWritable.setValues(values); |
| indxWritable.write(this.pStatement); |
| this.pStatement.execute(); |
| |
| final PhoenixConnection pconn = connection.unwrap(PhoenixConnection.class); |
| MutationState currentMutationState = pconn.getMutationState(); |
| if (mutationState == null) { |
| mutationState = currentMutationState; |
| } |
| // Keep accumulating Mutations till batch size |
| mutationState.join(currentMutationState); |
| // Write Mutation Batch |
| if (currentBatchCount % batchSize == 0) { |
| writeBatch(mutationState, context); |
| mutationState = null; |
| } |
| |
| // Make sure progress is reported to Application Master. |
| context.progress(); |
| } catch (SQLException e) { |
| LOGGER.error(" Error {} while read/write of a record ", e.getMessage()); |
| context.getCounter(PhoenixJobCounters.FAILED_RECORDS).increment(currentBatchCount); |
| throw new RuntimeException(e); |
| } |
| context.getCounter(PhoenixJobCounters.INPUT_RECORDS).increment(1); |
| } |
| |
| private void writeBatch(MutationState mutationState, Context context) throws IOException, |
| SQLException, InterruptedException { |
| final Iterator<Pair<byte[], List<Mutation>>> iterator = mutationState.toMutations(true, null); |
| while (iterator.hasNext()) { |
| Pair<byte[], List<Mutation>> mutationPair = iterator.next(); |
| List<Mutation> batchMutations = mutationPair.getSecond(); |
| List<List<Mutation>> batchOfBatchMutations = |
| MutationState.getMutationBatchList(batchSize, batchSizeBytes, batchMutations); |
| for (List<Mutation> mutationList : batchOfBatchMutations) { |
| writer.write(mutationList); |
| } |
| context.getCounter(PhoenixJobCounters.OUTPUT_RECORDS).increment( |
| mutationPair.getSecond().size()); |
| } |
| connection.rollback(); |
| currentBatchCount = 0; |
| } |
| |
| @Override |
| protected void cleanup(Context context) throws IOException, InterruptedException { |
| try { |
| // Write the last & final Mutation Batch |
| if (mutationState != null) { |
| writeBatch(mutationState, context); |
| } |
| // We are writing some dummy key-value as map output here so that we commit only one |
| // output to reducer. |
| context.write(new ImmutableBytesWritable(UUID.randomUUID().toString().getBytes()), |
| new IntWritable(0)); |
| super.cleanup(context); |
| } catch (SQLException e) { |
| LOGGER.error(" Error {} while read/write of a record ", e.getMessage()); |
| context.getCounter(PhoenixJobCounters.FAILED_RECORDS).increment(currentBatchCount); |
| throw new RuntimeException(e); |
| } finally { |
| tryClosingResources(); |
| } |
| } |
| |
| private void tryClosingResources() throws IOException { |
| if (this.connection != null) { |
| try { |
| this.connection.close(); |
| } catch (SQLException e) { |
| LOGGER.error("Error while closing connection in the PhoenixIndexMapper class ", e); |
| } |
| } |
| if (this.writer != null) { |
| this.writer.close(); |
| } |
| } |
| } |