dengzhhu653 commented on code in PR #6438: URL: https://github.com/apache/hive/pull/6438#discussion_r3224578460
########## standalone-metastore/metastore-server/src/test/java/org/apache/hadoop/hive/metastore/TestStatisticsManagement.java: ########## @@ -0,0 +1,497 @@ +/* + * 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 + * <p> + * http://www.apache.org/licenses/LICENSE-2.0 + * <p> + * 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.hive.metastore; + +import static org.apache.hadoop.hive.metastore.Warehouse.DEFAULT_CATALOG_NAME; +import static org.apache.hadoop.hive.metastore.Warehouse.DEFAULT_DATABASE_NAME; +import static org.junit.Assert.assertTrue; + +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.concurrent.TimeUnit; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hive.metastore.annotation.MetastoreUnitTest; +import org.apache.hadoop.hive.metastore.api.ColumnStatistics; +import org.apache.hadoop.hive.metastore.api.ColumnStatisticsData; +import org.apache.hadoop.hive.metastore.api.ColumnStatisticsDesc; +import org.apache.hadoop.hive.metastore.api.ColumnStatisticsObj; +import org.apache.hadoop.hive.metastore.api.Database; +import org.apache.hadoop.hive.metastore.api.DoubleColumnStatsData; +import org.apache.hadoop.hive.metastore.api.NoSuchObjectException; +import org.apache.hadoop.hive.metastore.api.Partition; +import org.apache.hadoop.hive.metastore.api.Table; +import org.apache.hadoop.hive.metastore.client.builder.DatabaseBuilder; +import org.apache.hadoop.hive.metastore.client.builder.PartitionBuilder; +import org.apache.hadoop.hive.metastore.client.builder.TableBuilder; +import org.apache.hadoop.hive.metastore.conf.MetastoreConf; +import org.apache.hadoop.hive.metastore.conf.MetastoreConf.ConfVars; +import org.apache.hadoop.hive.metastore.model.MPartitionColumnStatistics; +import org.apache.hadoop.hive.metastore.model.MTableColumnStatistics; +import org.apache.hadoop.hive.metastore.security.HadoopThriftAuthBridge; +import org.apache.hadoop.hive.metastore.utils.TestTxnDbUtil; +import org.apache.thrift.TException; +import org.junit.After; +import org.junit.Before; +import org.junit.Test; +import org.junit.experimental.categories.Category; + +import javax.jdo.PersistenceManager; +import javax.jdo.Query; + +/** + * Unit tests for {@link StatisticsManagementTask}, verifying that expired table-level and + * partition-level column statistics are deleted on schedule, and that tables marked with the + * exclude property are left untouched. + */ +@Category(MetastoreUnitTest.class) +public class TestStatisticsManagement { + + private IMetaStoreClient client; + private Configuration conf; + + @Before + public void setUp() throws Exception { + conf = MetastoreConf.newMetastoreConf(); + MetastoreConf.setVar(conf, ConfVars.METASTORE_METADATA_TRANSFORMER_CLASS, " "); + MetaStoreTestUtils.setConfForStandloneMode(conf); + conf.setBoolean(ConfVars.MULTITHREADED.getVarname(), false); + conf.setBoolean(ConfVars.HIVE_IN_TEST.getVarname(), true); + + // Enable stats auto deletion with a short retention so the threshold check triggers easily. + MetastoreConf.setBoolVar(conf, ConfVars.COLUMN_STATISTICS_AUTO_DELETION, true); + MetastoreConf.setTimeVar(conf, ConfVars.COLUMN_STATISTICS_RETENTION_PERIOD, 1, TimeUnit.DAYS); + + MetaStoreTestUtils.startMetaStoreWithRetry(HadoopThriftAuthBridge.getBridge(), conf); + TestTxnDbUtil.setConfValues(conf); + TestTxnDbUtil.prepDb(conf); + + client = new HiveMetaStoreClient(conf); + } + + @After + public void tearDown() throws Exception { + if (client != null) { + // Drop any leftover databases, similar to TestPartitionManagement.java. + List<String> dbs = client.getAllDatabases(DEFAULT_CATALOG_NAME); + for (String db : dbs) { + if (!db.equalsIgnoreCase(DEFAULT_DATABASE_NAME)) { + client.dropDatabase(DEFAULT_CATALOG_NAME, db, true, false, true); + } + } + } + try { + if (client != null) { + client.close(); + } + } finally { + client = null; + } + } + + @Test + public void testExpiredTableColStatsAreDeleted() throws Exception { + String dbName = "stats_db1"; + String tableName = "tbl1"; + createDbAndTable(dbName, tableName, false); + writeTableLevelColStats(dbName, tableName, "c1"); + assertHasTableColStats(dbName, tableName, "c1"); + makeAllTableColStatsOlderThanRetention(dbName, tableName); + + runStatisticsManagementTask(conf); + + assertNoTableColStats(dbName, tableName, "c1"); + } + + @Test + public void testExcludedTableStatsAreNotDeleted() throws Exception { + String dbName = "stats_db2"; + String tableName = "tbl2"; + createDbAndTable(dbName, tableName, true); + writeTableLevelColStats(dbName, tableName, "c1"); + assertHasTableColStats(dbName, tableName, "c1"); + makeAllTableColStatsOlderThanRetention(dbName, tableName); + + runStatisticsManagementTask(conf); + + // Stats must still be present because the table is marked as excluded. + assertHasTableColStats(dbName, tableName, "c1"); + } + + /** + * Verifies that setting {@value StatisticsManagementTask#STATISTICS_AUTO_DELETION_EXCLUDE_TBLPROPERTY} + * to {@code "false"} does not prevent deletion. Only an explicit {@code "true"} value excludes + * a table; any other value (including {@code "false"}) is treated as not excluded. + */ + @Test + public void testExcludePropertySetToFalseDoesNotPreventDeletion() throws Exception { + String dbName = "stats_db3"; + String tableName = "tbl3"; + createDbAndTable(dbName, tableName, false); + + // Explicitly set the exclude property to "false" — the task must still delete these stats. + Table t = client.getTable(dbName, tableName); + t.getParameters().put( + StatisticsManagementTask.STATISTICS_AUTO_DELETION_EXCLUDE_TBLPROPERTY, "false"); Review Comment: should we test the `StatisticsManagementTask.STATISTICS_AUTO_DELETION_EXCLUDE_TBLPROPERTY = true` as well? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. 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