| /* |
| * 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.hadoop.hbase.tool; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| import java.util.Map; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.TableNotFoundException; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * The tool to let you load the output of {@code HFileOutputFormat} into an existing table |
| * programmatically. Not thread safe. |
| */ |
| @InterfaceAudience.Public |
| public interface BulkLoadHFiles { |
| |
| static final String RETRY_ON_IO_EXCEPTION = "hbase.bulkload.retries.retryOnIOException"; |
| static final String MAX_FILES_PER_REGION_PER_FAMILY = |
| "hbase.mapreduce.bulkload.max.hfiles.perRegion.perFamily"; |
| static final String ASSIGN_SEQ_IDS = "hbase.mapreduce.bulkload.assign.sequenceNumbers"; |
| static final String CREATE_TABLE_CONF_KEY = "create.table"; |
| static final String IGNORE_UNMATCHED_CF_CONF_KEY = "ignore.unmatched.families"; |
| static final String ALWAYS_COPY_FILES = "always.copy.files"; |
| |
| /** |
| * Represents an HFile waiting to be loaded. An queue is used in this class in order to support |
| * the case where a region has split during the process of the load. When this happens, the HFile |
| * is split into two physical parts across the new region boundary, and each part is added back |
| * into the queue. The import process finishes when the queue is empty. |
| */ |
| @InterfaceAudience.Public |
| public static class LoadQueueItem { |
| |
| private final byte[] family; |
| |
| private final Path hfilePath; |
| |
| public LoadQueueItem(byte[] family, Path hfilePath) { |
| this.family = family; |
| this.hfilePath = hfilePath; |
| } |
| |
| @Override |
| public String toString() { |
| return "family:" + Bytes.toString(family) + " path:" + hfilePath.toString(); |
| } |
| |
| public byte[] getFamily() { |
| return family; |
| } |
| |
| public Path getFilePath() { |
| return hfilePath; |
| } |
| } |
| |
| /** |
| * Perform a bulk load of the given directory into the given pre-existing table. |
| * @param tableName the table to load into |
| * @param family2Files map of family to List of hfiles |
| * @throws TableNotFoundException if table does not yet exist |
| */ |
| Map<LoadQueueItem, ByteBuffer> bulkLoad(TableName tableName, Map<byte[], List<Path>> family2Files) |
| throws TableNotFoundException, IOException; |
| |
| /** |
| * Disables replication for all bulkloads done via this instance, when bulkload replication is |
| * configured. |
| */ |
| void disableReplication(); |
| |
| /** Returns true if replication has been disabled. */ |
| boolean isReplicationDisabled(); |
| |
| /** |
| * Perform a bulk load of the given directory into the given pre-existing table. |
| * @param tableName the table to load into |
| * @param dir the directory that was provided as the output path of a job using |
| * {@code HFileOutputFormat} |
| * @throws TableNotFoundException if table does not yet exist |
| */ |
| Map<LoadQueueItem, ByteBuffer> bulkLoad(TableName tableName, Path dir) |
| throws TableNotFoundException, IOException; |
| |
| static BulkLoadHFiles create(Configuration conf) { |
| return new BulkLoadHFilesTool(conf); |
| } |
| |
| } |