kgyrtkirk commented on a change in pull request #787: HIVE-22239
URL: https://github.com/apache/hive/pull/787#discussion_r332352109
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File path: common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
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@@ -2537,6 +2537,11 @@ private static void
populateLlapDaemonVarsSet(Set<String> llapDaemonVarsSetLocal
"When estimating output rows for a join involving multiple columns,
the default behavior assumes" +
"the columns are independent. Setting this flag to true will cause the
estimator to assume" +
"the columns are correlated."),
+
HIVE_STATS_RANGE_SELECTIVITY_UNIFORM_DISTRIBUTION("hive.stats.filter.range.uniform",
true,
+ "When estimating output rows from a condition, if a range predicate is
applied over a column and the" +
+ "minimum and maximum values for that column are available, assume
uniform distribution of values" +
+ "accross that range and scales number of rows proportionally. If this
is set to false, default" +
+ "selectivity value is used."),
Review comment:
small thing: could you add spaces at the end; because right now it contains
words like "theminimum" and "valuesacross"
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