okumin commented on code in PR #5556:
URL: https://github.com/apache/hive/pull/5556#discussion_r1862171239
##########
ql/src/java/org/apache/hadoop/hive/ql/plan/Statistics.java:
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@@ -220,14 +220,14 @@ public Statistics clone() {
}
public void addBasicStats(Statistics stats) {
- dataSize += stats.dataSize;
+ dataSize = StatsUtils.safeAdd(dataSize, stats.dataSize);
numRows += stats.numRows;
Review Comment:
Can we also use `safeAdd` here? [This line in the same
file](https://github.com/apache/hive/blob/4654aea51b3369d7845ab129ece496672979fee9/ql/src/java/org/apache/hadoop/hive/ql/plan/Statistics.java#L258)
does have a possibility of overflow. I know # of rows is unlikely to be
overflowed, though.
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