englefly commented on code in PR #21482:
URL: https://github.com/apache/doris/pull/21482#discussion_r1257811915
##########
fe/fe-core/src/main/java/org/apache/doris/statistics/ColumnStatistic.java:
##########
@@ -138,7 +175,8 @@ public static ColumnStatistic fromResultRow(ResultRow
resultRow) {
columnStatisticBuilder.setNumNulls(Double.parseDouble(nullCount));
columnStatisticBuilder.setDataSize(Double
.parseDouble(resultRow.getColumnValueWithDefault("data_size_in_bytes", "0")));
-
columnStatisticBuilder.setAvgSizeByte(columnStatisticBuilder.getDataSize()
+
columnStatisticBuilder.setAvgSizeByte(columnStatisticBuilder.getCount() == 0
+ ? 0 : columnStatisticBuilder.getDataSize()
/ columnStatisticBuilder.getCount());
Review Comment:
if we do not have schema info, leave it -1, and we could make up avgSize at
computeScan().
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