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Posted to commits@hive.apache.org by rh...@apache.org on 2014/04/01 23:30:11 UTC
svn commit: r1583797 -
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java
Author: rhbutani
Date: Tue Apr 1 21:30:11 2014
New Revision: 1583797
URL: http://svn.apache.org/r1583797
Log:
HIVE-6797 Add protection against divide by zero in stats annotation (Prasanth J via Harish Butani)
Modified:
hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java
Modified: hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java
URL: http://svn.apache.org/viewvc/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java?rev=1583797&r1=1583796&r2=1583797&view=diff
==============================================================================
--- hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java (original)
+++ hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java Tue Apr 1 21:30:11 2014
@@ -1115,7 +1115,7 @@ public class StatsRulesProcFactory {
// number of distincts should not change. Update the distinct count only when
// the output number of rows is less than input number of rows.
if (ratio <= 1.0) {
- newDV = Math.round(ratio * oldDV);
+ newDV = (long) Math.ceil(ratio * oldDV);
}
cs.setNumNulls(newNumNulls);
cs.setCountDistint(newDV);