Github user wzhfy commented on a diff in the pull request: https://github.com/apache/spark/pull/18421#discussion_r125153279 --- Diff: sql/hive/src/test/scala/org/apache/spark/sql/hive/StatisticsSuite.scala --- @@ -201,6 +202,193 @@ class StatisticsSuite extends StatisticsCollectionTestBase with TestHiveSingleto } } + test("analyze single partition") { + val tableName = "analyzeTable_part" + + def queryStats(ds: String): CatalogStatistics = { + val partition = + spark.sessionState.catalog.getPartition(TableIdentifier(tableName), Map("ds" -> ds)) + partition.stats.get + } + + withTable(tableName) { + sql(s"CREATE TABLE $tableName (key STRING, value STRING) PARTITIONED BY (ds STRING)") + + sql(s"INSERT INTO TABLE $tableName PARTITION (ds='2010-01-01') SELECT * FROM src") + sql( + s""" + |INSERT INTO TABLE $tableName PARTITION (ds='2010-01-02') + |SELECT * FROM src + |UNION ALL + |SELECT * FROM src + """.stripMargin) + sql(s"INSERT INTO TABLE $tableName PARTITION (ds='2010-01-03') SELECT * FROM src") + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-01') COMPUTE STATISTICS").collect() + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-02') COMPUTE STATISTICS").collect() + + assert(queryStats("2010-01-01").rowCount.get === 500) + assert(queryStats("2010-01-01").sizeInBytes === 5812) + + assert(queryStats("2010-01-02").rowCount.get === 2*500) + assert(queryStats("2010-01-02").sizeInBytes === 2*5812) + } + } + + test("analyze single partition noscan") { + val tableName = "analyzeTable_part" + + def queryStats(ds: String): CatalogStatistics = { + val partition = + spark.sessionState.catalog.getPartition(TableIdentifier(tableName), Map("ds" -> ds)) + partition.stats.get + } + + withTable(tableName) { + sql(s"CREATE TABLE $tableName (key STRING, value STRING) PARTITIONED BY (ds STRING)") + + sql(s"INSERT INTO TABLE $tableName PARTITION (ds='2010-01-01') SELECT * FROM src") + sql( + s""" + |INSERT INTO TABLE $tableName PARTITION (ds='2010-01-02') + |SELECT * FROM src + |UNION ALL + |SELECT * FROM src + """.stripMargin) + sql(s"INSERT INTO TABLE $tableName PARTITION (ds='2010-01-03') SELECT * FROM src") + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-01') COMPUTE STATISTICS NOSCAN") + .collect() + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-02') COMPUTE STATISTICS NOSCAN") + .collect() + + assert(queryStats("2010-01-01").rowCount === None) + assert(queryStats("2010-01-01").sizeInBytes === 5812) + + assert(queryStats("2010-01-02").rowCount === None) + assert(queryStats("2010-01-02").sizeInBytes === 2*5812) + } + } + + test("analyze a set of partitions") { + val tableName = "analyzeTable_part" + + def queryStats(ds: String, hr: String): Option[CatalogStatistics] = { + val tableId = TableIdentifier(tableName) + val partition = + spark.sessionState.catalog.getPartition(tableId, Map("ds" -> ds, "hr" -> hr)) + partition.stats + } + + def assertStats(ds: String, hr: String, rowCount: BigInt, sizeInBytes: BigInt): Unit = { + val stats = queryStats(ds, hr).get + assert(stats.rowCount === Some(rowCount)) + assert(stats.sizeInBytes === sizeInBytes) + } + + def assertNoStats(ds: String, hr: String): Unit = { + assert(queryStats(ds, hr) === None) + } + + def createPartition(ds: String, hr: Int, query: String): Unit = { --- End diff -- same here
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