| /** |
| * 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.fs.slive; |
| |
| /** |
| * Constants used in various places in slive |
| */ |
| class Constants { |
| |
| /** |
| * This class should be static members only - no construction allowed |
| */ |
| private Constants() { |
| } |
| |
| /** |
| * The distributions supported (or that maybe supported) |
| */ |
| enum Distribution { |
| BEG, END, UNIFORM, MID; |
| String lowerName() { |
| return this.name().toLowerCase(); |
| } |
| } |
| |
| /** |
| * Allowed operation types |
| */ |
| enum OperationType { |
| READ, APPEND, RENAME, LS, MKDIR, DELETE, CREATE; |
| String lowerName() { |
| return this.name().toLowerCase(); |
| } |
| } |
| |
| // program info |
| static final String PROG_NAME = SliveTest.class.getSimpleName(); |
| static final String PROG_VERSION = "0.0.2"; |
| |
| // useful constants |
| static final int MEGABYTES = 1048576; |
| |
| // must be a multiple of |
| // BYTES_PER_LONG - used for reading and writing buffer sizes |
| static final int BUFFERSIZE = 64 * 1024; |
| |
| // 8 bytes per long |
| static final int BYTES_PER_LONG = 8; |
| |
| // used for finding the reducer file for a given number |
| static final String REDUCER_FILE = "part-%s"; |
| |
| // this is used to ensure the blocksize is a multiple of this config setting |
| static final String BYTES_PER_CHECKSUM = "io.bytes.per.checksum"; |
| |
| // min replication setting for verification |
| static final String MIN_REPLICATION = "dfs.namenode.replication.min"; |
| |
| // used for getting an option description given a set of distributions |
| // to substitute |
| static final String OP_DESCR = "pct,distribution where distribution is one of %s"; |
| |
| // keys for looking up a specific operation in the hadoop config |
| static final String OP_PERCENT = "slive.op.%s.pct"; |
| static final String OP = "slive.op.%s"; |
| static final String OP_DISTR = "slive.op.%s.dist"; |
| |
| // path constants |
| static final String BASE_DIR = "slive"; |
| static final String DATA_DIR = "data"; |
| static final String OUTPUT_DIR = "output"; |
| |
| // whether whenever data is written a flush should occur |
| static final boolean FLUSH_WRITES = false; |
| |
| } |