deniskuzZ commented on code in PR #6491:
URL: https://github.com/apache/hive/pull/6491#discussion_r3248245024
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ql/src/java/org/apache/hadoop/hive/ql/stats/StatsUtils.java:
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@@ -239,22 +239,29 @@ public static long getNumRows(HiveConf conf,
List<ColumnInfo> schema, Table tabl
return aggregateStat.getNumRows();
}
- private static void estimateStatsForMissingCols(List<String> neededColumns,
List<ColStatistics> columnStats,
+ private static List<ColStatistics> estimateStatsForMissingCols(
+ List<String> neededColumns, List<ColStatistics> existingColStats,
HiveConf conf, long nr, List<ColumnInfo> schema) {
Set<String> neededCols = new HashSet<>(neededColumns);
Set<String> colsWithStats = new HashSet<>();
+ List<ColStatistics> neededColStats = new ArrayList<>(neededCols.size());
Review Comment:
maybe simply `colStats`? we return here complete column stats: existing +
estimated, don't we?
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