| /* |
| * 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.omid.transaction; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.hadoop.hbase.client.Delete; |
| import org.apache.hadoop.hbase.client.Mutation; |
| import org.apache.hadoop.hbase.client.Table; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class HBaseTransaction extends AbstractTransaction<HBaseCellId> { |
| private static final Logger LOG = LoggerFactory.getLogger(HBaseTransaction.class); |
| static final int MAX_DELETE_BATCH_SIZE = 1000; |
| |
| public HBaseTransaction(long transactionId, long epoch, Set<HBaseCellId> writeSet, |
| Set<HBaseCellId> conflictFreeWriteSet, AbstractTransactionManager tm, boolean isLowLatency) { |
| super(transactionId, epoch, writeSet, conflictFreeWriteSet, tm, isLowLatency); |
| } |
| |
| public HBaseTransaction(long transactionId, long epoch, Set<HBaseCellId> writeSet, |
| Set<HBaseCellId> conflictFreeWriteSet, AbstractTransactionManager tm, |
| long readTimestamp, long writeTimestamp, boolean isLowLatency) { |
| super(transactionId, epoch, writeSet, conflictFreeWriteSet, tm, readTimestamp, writeTimestamp, isLowLatency); |
| } |
| |
| public HBaseTransaction(long transactionId, long readTimestamp, VisibilityLevel visibilityLevel, long epoch, |
| Set<HBaseCellId> writeSet, Set<HBaseCellId> conflictFreeWriteSet, |
| AbstractTransactionManager tm, boolean isLowLatency) { |
| super(transactionId, readTimestamp, visibilityLevel, epoch, writeSet, conflictFreeWriteSet, tm, isLowLatency); |
| } |
| |
| |
| private void flushMutations(Table table, List<Mutation> mutations) throws IOException, InterruptedException { |
| table.batch(mutations, new Object[mutations.size()]); |
| } |
| |
| private void deleteCell(HBaseCellId cell, Map<Table,List<Mutation>> mutations) throws IOException, InterruptedException { |
| |
| Delete delete = new Delete(cell.getRow()); |
| delete.addColumn(cell.getFamily(), cell.getQualifier(), cell.getTimestamp()); |
| |
| Table table = cell.getTable().getHTable(); |
| List<Mutation> tableMutations = mutations.get(table); |
| if (tableMutations == null) { |
| ArrayList<Mutation> newList = new ArrayList<>(); |
| newList.add(delete); |
| mutations.put(table, newList); |
| } else { |
| tableMutations.add(delete); |
| if (tableMutations.size() > MAX_DELETE_BATCH_SIZE) { |
| flushMutations(table, tableMutations); |
| mutations.remove(table); |
| } |
| } |
| } |
| |
| @Override |
| public void cleanup() { |
| |
| Map<Table,List<Mutation>> mutations = new HashMap<>(); |
| |
| try { |
| for (final HBaseCellId cell : getWriteSet()) { |
| deleteCell(cell, mutations); |
| } |
| |
| for (final HBaseCellId cell : getConflictFreeWriteSet()) { |
| deleteCell(cell, mutations); |
| } |
| |
| for (Map.Entry<Table,List<Mutation>> entry: mutations.entrySet()) { |
| flushMutations(entry.getKey(), entry.getValue()); |
| } |
| |
| } catch (InterruptedException | IOException e) { |
| LOG.warn("Failed cleanup for Tx {}. This issue has been ignored", getTransactionId(), e); |
| } |
| } |
| |
| /** |
| * Flushes pending operations for tables touched by transaction |
| * @throws IOException in case of any I/O related issues |
| */ |
| public void flushTables() throws IOException { |
| |
| for (TTable writtenTable : getWrittenTables()) { |
| writtenTable.flushCommits(); |
| } |
| |
| } |
| |
| // **************************************************************************************************************** |
| // Helper methods |
| // **************************************************************************************************************** |
| |
| private Set<TTable> getWrittenTables() { |
| HashSet<HBaseCellId> writeSet = (HashSet<HBaseCellId>) getWriteSet(); |
| Set<TTable> tables = new HashSet<TTable>(); |
| for (HBaseCellId cell : writeSet) { |
| tables.add(cell.getTable()); |
| } |
| writeSet = (HashSet<HBaseCellId>) getConflictFreeWriteSet(); |
| for (HBaseCellId cell : writeSet) { |
| tables.add(cell.getTable()); |
| } |
| return tables; |
| } |
| |
| } |