001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.replication; 019 020import java.util.NavigableMap; 021import org.apache.hadoop.hbase.Cell; 022import org.apache.hadoop.hbase.CellUtil; 023import org.apache.hadoop.hbase.HConstants; 024import org.apache.hadoop.hbase.wal.WAL.Entry; 025import org.apache.hadoop.hbase.wal.WALEdit; 026import org.apache.yetus.audience.InterfaceAudience; 027 028import org.apache.hbase.thirdparty.com.google.common.base.Predicate; 029 030/** 031 * Keeps KVs that are scoped other than local 032 */ 033@InterfaceAudience.Private 034public class ScopeWALEntryFilter implements WALEntryFilter, WALCellFilter { 035 036 private final BulkLoadCellFilter bulkLoadFilter = new BulkLoadCellFilter(); 037 038 @Override 039 public Entry filter(Entry entry) { 040 // Do not filter out an entire entry by replication scopes. As now we support serial 041 // replication, the sequence id of a marker is also needed by upper layer. We will filter out 042 // all the cells in the filterCell method below if the replication scopes is null or empty. 043 return entry; 044 } 045 046 private boolean hasGlobalScope(NavigableMap<byte[], Integer> scopes, byte[] family) { 047 Integer scope = scopes.get(family); 048 return scope != null && scope.intValue() == HConstants.REPLICATION_SCOPE_GLOBAL; 049 } 050 @Override 051 public Cell filterCell(Entry entry, Cell cell) { 052 NavigableMap<byte[], Integer> scopes = entry.getKey().getReplicationScopes(); 053 if (scopes == null || scopes.isEmpty()) { 054 return null; 055 } 056 byte[] family = CellUtil.cloneFamily(cell); 057 if (CellUtil.matchingColumn(cell, WALEdit.METAFAMILY, WALEdit.BULK_LOAD)) { 058 return bulkLoadFilter.filterCell(cell, new Predicate<byte[]>() { 059 @Override 060 public boolean apply(byte[] family) { 061 return !hasGlobalScope(scopes, family); 062 } 063 }); 064 } 065 return hasGlobalScope(scopes, family) ? cell : null; 066 } 067}