Github user wzhfy commented on a diff in the pull request: https://github.com/apache/spark/pull/18421#discussion_r126273439 --- Diff: sql/hive/src/test/scala/org/apache/spark/sql/hive/StatisticsSuite.scala --- @@ -181,6 +182,151 @@ class StatisticsSuite extends StatisticsCollectionTestBase with TestHiveSingleto } } + private val SELECT_FROM_SRC = "SELECT '1', 'A' from src" + + 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 + } + + def createPartition(ds: String, query: String): Unit = { + sql(s"INSERT INTO TABLE $tableName PARTITION (ds='$ds') $query") + } + + withTable(tableName) { + sql(s"CREATE TABLE $tableName (key STRING, value STRING) PARTITIONED BY (ds STRING)") + + createPartition("2010-01-01", SELECT_FROM_SRC) + createPartition("2010-01-02", s"$SELECT_FROM_SRC UNION ALL $SELECT_FROM_SRC") + createPartition("2010-01-03", SELECT_FROM_SRC) + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-01') COMPUTE STATISTICS NOSCAN") + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-02') COMPUTE STATISTICS NOSCAN") + + assert(queryStats("2010-01-01").rowCount === None) + assert(queryStats("2010-01-01").sizeInBytes === 2000) + + assert(queryStats("2010-01-02").rowCount === None) + assert(queryStats("2010-01-02").sizeInBytes === 2*2000) + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-01') COMPUTE STATISTICS") + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-02') COMPUTE STATISTICS") + + assert(queryStats("2010-01-01").rowCount.get === 500) + assert(queryStats("2010-01-01").sizeInBytes === 2000) + + assert(queryStats("2010-01-02").rowCount.get === 2*500) + assert(queryStats("2010-01-02").sizeInBytes === 2*2000) + } + } + + 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 assertSizeInBytesStats(ds: String, hr: String, sizeInBytes: BigInt): Unit = { + val stats = queryStats(ds, hr).get + assert(stats.rowCount === None) + assert(stats.sizeInBytes === sizeInBytes) + } + + def createPartition(ds: String, hr: Int, query: String): Unit = { + sql(s"INSERT INTO TABLE $tableName PARTITION (ds='$ds', hr=$hr) $query") + } + + withTable(tableName) { + sql(s"CREATE TABLE $tableName (key STRING, value STRING) PARTITIONED BY (ds STRING, hr INT)") + + createPartition("2010-01-01", 10, SELECT_FROM_SRC) + createPartition("2010-01-01", 11, SELECT_FROM_SRC) + createPartition("2010-01-02", 10, SELECT_FROM_SRC) + createPartition("2010-01-02", 11, s"$SELECT_FROM_SRC UNION ALL $SELECT_FROM_SRC") + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-01') COMPUTE STATISTICS NOSCAN") + + assertSizeInBytesStats("2010-01-01", "10", 2000) + assertSizeInBytesStats("2010-01-01", "11", 2000) + assert(queryStats("2010-01-02", "10") === None) + assert(queryStats("2010-01-02", "11") === None) + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-02') COMPUTE STATISTICS NOSCAN") + + assertSizeInBytesStats("2010-01-01", "10", 2000) + assertSizeInBytesStats("2010-01-01", "11", 2000) + assertSizeInBytesStats("2010-01-02", "10", 2000) + assertSizeInBytesStats("2010-01-02", "11", 2*2000) + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-01') COMPUTE STATISTICS") + + assertStats("2010-01-01", "10", 500, 2000) + assertStats("2010-01-01", "11", 500, 2000) + assertSizeInBytesStats("2010-01-02", "10", 2000) + assertSizeInBytesStats("2010-01-02", "11", 2*2000) + + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2010-01-02') COMPUTE STATISTICS") + + assertStats("2010-01-01", "10", 500, 2000) + assertStats("2010-01-01", "11", 500, 2000) + assertStats("2010-01-02", "10", 500, 2000) + assertStats("2010-01-02", "11", 2*500, 2*2000) + } + } + + test("analyze non-existent partition") { + val tableName = "analyzeTable_part" + 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") + + intercept[AnalysisException] { + sql(s"ANALYZE TABLE $tableName PARTITION (hour=20) COMPUTE STATISTICS") + } + + intercept[NoSuchPartitionException] { + sql(s"ANALYZE TABLE $tableName PARTITION (ds='2011-02-30') COMPUTE STATISTICS") + } + } + } + + test("analyzing views is not supported") { --- End diff -- I think this is caused by rebase? please remove it.
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