| /** |
| * 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.tajo.pullserver; |
| |
| public class PullServerConstants { |
| |
| /** |
| * Pull server query parameters |
| */ |
| public enum Param { |
| // Common params |
| REQUEST_TYPE("rtype"), // can be one of 'm' for meta and 'c' for chunk. |
| SHUFFLE_TYPE("stype"), // can be one of 'r', 'h', and 's'. |
| QUERY_ID("qid"), |
| EB_ID("sid"), |
| PART_ID("p"), |
| TASK_ID("ta"), |
| OFFSET("offset"), |
| LENGTH("length"), |
| |
| // Range shuffle params |
| START("start"), |
| END("end"), |
| FINAL("final"); |
| |
| private String key; |
| |
| Param(String key) { |
| this.key = key; |
| } |
| |
| public String key() { |
| return key; |
| } |
| } |
| |
| // Request types ---------------------------------------------------------- |
| |
| public static final String CHUNK_REQUEST_PARAM_STRING = "c"; |
| public static final String META_REQUEST_PARAM_STRING = "m"; |
| |
| // Shuffle types ---------------------------------------------------------- |
| |
| public static final String RANGE_SHUFFLE_PARAM_STRING = "r"; |
| public static final String HASH_SHUFFLE_PARAM_STRING = "h"; |
| public static final String SCATTERED_HASH_SHUFFLE_PARAM_STRING = "s"; |
| |
| // HTTP header ------------------------------------------------------------ |
| |
| public static final String CHUNK_LENGTH_HEADER_NAME = "c"; |
| |
| // SSL configurations ----------------------------------------------------- |
| |
| public static final int DEFAULT_SUFFLE_SSL_FILE_BUFFER_SIZE = 60 * 1024; |
| |
| public static final String SUFFLE_SSL_FILE_BUFFER_SIZE_KEY = |
| "tajo.pullserver.ssl.file.buffer.size"; |
| |
| // OS cache configurations ------------------------------------------------ |
| |
| public static final String SHUFFLE_MANAGE_OS_CACHE = "tajo.pullserver.manage.os.cache"; |
| public static final boolean DEFAULT_SHUFFLE_MANAGE_OS_CACHE = true; |
| |
| // Prefetch configurations ------------------------------------------------ |
| |
| public static final String SHUFFLE_READAHEAD_BYTES = "tajo.pullserver.readahead.bytes"; |
| public static final int DEFAULT_SHUFFLE_READAHEAD_BYTES = 4 * 1024 * 1024; |
| |
| // Yarn service ID -------------------------------------------------------- |
| |
| public static final String PULLSERVER_SERVICEID = "tajo.pullserver"; |
| |
| // Standalone pull server ------------------------------------------------- |
| public static final String PULLSERVER_STANDALONE_ENV_KEY = "TAJO_PULLSERVER_STANDALONE"; |
| |
| public static final String PULLSERVER_SERVICE_NAME = "httpshuffle"; |
| } |