Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/18421#discussion_r131732850 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/command/AnalyzeTableCommand.scala --- @@ -37,31 +37,19 @@ case class AnalyzeTableCommand( if (tableMeta.tableType == CatalogTableType.VIEW) { throw new AnalysisException("ANALYZE TABLE is not supported on views.") } - val newTotalSize = CommandUtils.calculateTotalSize(sessionState, tableMeta) - val oldTotalSize = tableMeta.stats.map(_.sizeInBytes.toLong).getOrElse(-1L) - val oldRowCount = tableMeta.stats.flatMap(_.rowCount.map(_.toLong)).getOrElse(-1L) - var newStats: Option[CatalogStatistics] = None - if (newTotalSize >= 0 && newTotalSize != oldTotalSize) { - newStats = Some(CatalogStatistics(sizeInBytes = newTotalSize)) - } - // We only set rowCount when noscan is false, because otherwise: - // 1. when total size is not changed, we don't need to alter the table; - // 2. when total size is changed, `oldRowCount` becomes invalid. - // This is to make sure that we only record the right statistics. - if (!noscan) { - val newRowCount = sparkSession.table(tableIdentWithDB).count() - if (newRowCount >= 0 && newRowCount != oldRowCount) { - newStats = if (newStats.isDefined) { - newStats.map(_.copy(rowCount = Some(BigInt(newRowCount)))) - } else { - Some(CatalogStatistics( - sizeInBytes = oldTotalSize, rowCount = Some(BigInt(newRowCount)))) - } + // Compute stats for the whole table + val newTotalSize = CommandUtils.calculateTotalSize(sessionState, tableMeta) + val newRowCount = + if (noscan) { + None + } else { + Some(BigInt(sparkSession.table(tableIdentWithDB).count())) --- End diff -- Let us shorten it to a single line. ```Scala val newRowCount = if (noscan) None else Some(BigInt(sparkSession.table(tableIdentWithDB).count())) ```
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