| /* |
| * 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.drill.exec.store.mapr.db; |
| |
| import org.apache.drill.common.config.DrillConfig; |
| import org.apache.drill.exec.physical.base.GroupScan; |
| import org.apache.drill.exec.planner.cost.PluginCost; |
| import org.apache.drill.exec.store.mapr.PluginConstants; |
| import org.apache.drill.exec.store.mapr.db.json.JsonTableGroupScan; |
| |
| public class MapRDBCost implements PluginCost { |
| |
| private int JSON_AVG_COLUMN_SIZE; |
| private int JSON_TABLE_BLOCK_SIZE; // bytes per block |
| private int JSON_BLOCK_SEQ_READ_COST; |
| private int JSON_BLOCK_RANDOM_READ_COST; |
| private int JSON_HDD_BLOCK_SEQ_READ_COST; |
| private int JSON_HDD_BLOCK_RANDOM_READ_COST; |
| private int JSON_SSD_BLOCK_SEQ_READ_COST; |
| private int JSON_SSD_BLOCK_RANDOM_READ_COST; |
| |
| public MapRDBCost(DrillConfig config, String mediaType) { |
| JSON_AVG_COLUMN_SIZE = setConfigValue(config, PluginConstants.JSON_TABLE_AVERGE_COLUMN_SIZE, |
| PluginConstants.JSON_TABLE_AVERGE_COLUMN_SIZE_DEFAULT, PluginConstants.alwaysValid); |
| JSON_TABLE_BLOCK_SIZE = setConfigValue(config, PluginConstants.JSON_TABLE_BLOCK_SIZE, |
| PluginConstants.JSON_TABLE_BLOCK_SIZE_DEFAULT, PluginConstants.alwaysValid); |
| JSON_SSD_BLOCK_SEQ_READ_COST = setConfigValue(config, PluginConstants.JSON_TABLE_SSD_BLOCK_SEQ_READ_COST, |
| PluginConstants.JSON_TABLE_SSD_BLOCK_SEQ_READ_COST_DEFAULT, PluginConstants.isNonNegative); |
| JSON_SSD_BLOCK_RANDOM_READ_COST = setConfigValue(config, PluginConstants.JSON_TABLE_SSD_BLOCK_RANDOM_READ_COST, |
| PluginConstants.JSON_TABLE_SSD_BLOCK_RANDOM_READ_COST_DEFAULT, new greaterThanEquals(JSON_SSD_BLOCK_SEQ_READ_COST)); |
| JSON_HDD_BLOCK_SEQ_READ_COST = setConfigValue(config, PluginConstants.JSON_TABLE_HDD_BLOCK_SEQ_READ_COST, |
| PluginConstants.JSON_TABLE_HDD_BLOCK_SEQ_READ_COST_DEFAULT, PluginConstants.isNonNegative); |
| JSON_HDD_BLOCK_RANDOM_READ_COST = setConfigValue(config, PluginConstants.JSON_TABLE_HDD_BLOCK_RANDOM_READ_COST, |
| PluginConstants.JSON_TABLE_HDD_BLOCK_RANDOM_READ_COST_DEFAULT, new greaterThanEquals(JSON_HDD_BLOCK_SEQ_READ_COST)); |
| JSON_BLOCK_SEQ_READ_COST = mediaType.equals(PluginConstants.SSD) ? JSON_SSD_BLOCK_SEQ_READ_COST : |
| JSON_HDD_BLOCK_SEQ_READ_COST; |
| JSON_BLOCK_RANDOM_READ_COST = mediaType.equals(PluginConstants.SSD) ? JSON_SSD_BLOCK_RANDOM_READ_COST : |
| JSON_HDD_BLOCK_RANDOM_READ_COST; |
| } |
| |
| private int setConfigValue(DrillConfig config, String configPath, |
| int defaultValue, CheckValid check) { |
| int configValue; |
| try { |
| configValue = config.getInt(configPath); |
| if (!check.isValid(configValue)) { configValue = defaultValue; } |
| } catch (Exception ex) { |
| // Use defaults, if config values not present or any other issue |
| configValue = defaultValue; |
| } |
| return configValue; |
| } |
| |
| @Override |
| public int getAverageColumnSize(GroupScan scan) { |
| if (scan instanceof JsonTableGroupScan) { |
| return JSON_AVG_COLUMN_SIZE; |
| } else { |
| return PluginConstants.TABLE_AVERGE_COLUMN_SIZE_DEFAULT; |
| } |
| } |
| |
| @Override |
| public int getBlockSize(GroupScan scan) { |
| if (scan instanceof JsonTableGroupScan) { |
| return JSON_TABLE_BLOCK_SIZE; |
| } else { |
| return PluginConstants.TABLE_BLOCK_SIZE_DEFAULT; |
| } |
| } |
| |
| @Override |
| public int getSequentialBlockReadCost(GroupScan scan) { |
| if (scan instanceof JsonTableGroupScan) { |
| return JSON_BLOCK_SEQ_READ_COST; |
| } else { |
| return PluginConstants.TABLE_SSD_BLOCK_SEQ_READ_COST_DEFAULT; |
| } |
| } |
| |
| @Override |
| public int getRandomBlockReadCost(GroupScan scan) { |
| if (scan instanceof JsonTableGroupScan) { |
| return JSON_BLOCK_RANDOM_READ_COST; |
| } else { |
| return PluginConstants.TABLE_SSD_BLOCK_RANDOM_READ_COST_DEFAULT; |
| } |
| } |
| } |