zhangayqian commented on a change in pull request #1780: URL: https://github.com/apache/kylin/pull/1780#discussion_r784476015
########## File path: source-hive/src/main/java/org/apache/kylin/source/hive/SparkHiveDictReplaceStep.java ########## @@ -0,0 +1,125 @@ +/* + * 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.kylin.source.hive; + +import org.apache.commons.cli.Option; +import org.apache.commons.cli.OptionBuilder; +import org.apache.commons.cli.Options; +import org.apache.kylin.common.KylinConfig; +import org.apache.kylin.common.util.AbstractApplication; +import org.apache.kylin.common.util.OptionsHelper; +import org.apache.kylin.cube.CubeInstance; +import org.apache.kylin.cube.CubeManager; +import org.apache.kylin.cube.CubeSegment; +import org.apache.kylin.engine.EngineFactory; +import org.apache.kylin.engine.mr.common.AbstractHadoopJob; +import org.apache.kylin.engine.mr.common.BatchConstants; +import org.apache.kylin.engine.mr.common.SerializableConfiguration; +import org.apache.kylin.metadata.model.IJoinedFlatTableDesc; +import org.apache.spark.sql.SparkSession; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.Serializable; +import java.util.Map; + +public class SparkHiveDictReplaceStep extends AbstractApplication implements Serializable { + + private static final Logger logger = LoggerFactory.getLogger(SparkHiveDictReplaceStep.class); + + public static final Option OPTION_CUBE_NAME = OptionBuilder.withArgName(BatchConstants.ARG_CUBE_NAME).hasArg().isRequired(true).withDescription("Cube Name").create(BatchConstants.ARG_CUBE_NAME); + public static final Option OPTION_META_URL = OptionBuilder.withArgName("metaUrl").hasArg().isRequired(true).withDescription("Meta Url").create("metaUrl"); + public static final Option OPTION_SEGMENT_ID = OptionBuilder.withArgName("segmentId").hasArg().isRequired(true).withDescription("Segment Id").create("segmentId"); + public static final Option OPTION_FLOW_JOB_ID = OptionBuilder.withArgName("flowJobId").hasArg().isRequired(true).withDescription("Flow Job Id").create("flowJobId"); + public static final Option OPTION_WAREHOUSE_DIR = OptionBuilder.withArgName("wareHouseDir").hasArg().isRequired(true).withDescription("WareHouse Dir").create("wareHouseDir"); + public static final Option OPTION_DICT_COLUMNS = OptionBuilder.withArgName("dictColumns").hasArg().isRequired(true).withDescription("Dict Columns").create("dictColumns"); + public static final Option OPTION_GLOBAL_DICT_TABLE = OptionBuilder.withArgName("globalDictTable").hasArg().isRequired(true).withDescription("Global Dict Table").create("globalDictTable"); + public static final Option OPTION_DICT_SUFFIX = OptionBuilder.withArgName("dictSuffix").hasArg().isRequired(true).withDescription("Dict Suffix").create("dictSuffix"); + + private String cubeName; + private String segmentId; + private String metaUrl; + private String wareHouseDir; + private String dictColumns; + private String globalDictTable; + private String dictSuffix; + private String flowJobId; + + private Options options; + + public SparkHiveDictReplaceStep() { + options = new Options(); + options.addOption(OPTION_CUBE_NAME); + options.addOption(OPTION_DICT_COLUMNS); + options.addOption(OPTION_META_URL); + options.addOption(OPTION_SEGMENT_ID); + options.addOption(OPTION_FLOW_JOB_ID); + options.addOption(OPTION_WAREHOUSE_DIR); + options.addOption(OPTION_GLOBAL_DICT_TABLE); + options.addOption(OPTION_DICT_SUFFIX); + } + + @Override + protected Options getOptions() { + return options; + } + + @Override + protected void execute(OptionsHelper optionsHelper) throws Exception { + initParam(optionsHelper); + + try { + SparkSession spark = SparkSession.builder().appName("Spark Hive Global Dict").master("yarn").config("spark.sql.warehouse.dir", wareHouseDir).enableHiveSupport().getOrCreate(); + + SerializableConfiguration sConf = new SerializableConfiguration(spark.sparkContext().hadoopConfiguration()); + KylinConfig envConfig = AbstractHadoopJob.loadKylinConfigFromHdfs(sConf, metaUrl); + + CubeInstance cubeInstance = CubeManager.getInstance(envConfig).getCube(cubeName); + CubeSegment seg = cubeInstance.getSegmentById(segmentId); + IJoinedFlatTableDesc flatDesc = EngineFactory.getJoinedFlatTableDesc(seg); + + Map<String, String> dictRef = seg.getConfig().getMrHiveDictRefColumns(); + for (String dictColumn : dictColumns.split(",")) { + dictRef.put(dictColumn, ""); + } + + Map<String, String> replaceSqlMap = MRHiveDictUtil.generateReplaceSql(flatDesc, dictRef, seg.getConfig().getHiveDatabaseForIntermediateTable(), seg.getConfig().getMrHiveDictDB(), globalDictTable, dictSuffix); + for (Map.Entry<String, String> entry : replaceSqlMap.entrySet()) { + logger.info("field:" + entry.getKey() + ":\n" + entry.getValue()); + String replaceSql = entry.getValue(); + replaceSql = replaceSql.substring(0, replaceSql.lastIndexOf(";")); + spark.sql(replaceSql); + } + } catch (Exception e) { + logger.error("", e); 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