Github user jinfengni commented on a diff in the pull request:
https://github.com/apache/drill/pull/805#discussion_r125785209
--- Diff:
exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetMetadataCache.java
---
@@ -445,12 +448,148 @@ public void testMetadataCacheAbsolutePaths() throws
Exception {
test("drop table if exists %s", RELATIVE_PATHS_METADATA);
}
}
+ @Test // DRILL-4139
+ public void testBooleanPartitionPruning() throws Exception {
--- End diff --
In addition to "=" comparison, can you please try with "is null" / "is not
null" predicate, since one of this PR's objectives is to fix partition pruning
dealing null values. I saw another incorrect query result, although I'm not
sure if it's a bug in the base code, or a bug in this PR.
```
create table dfs.tmp.`t6/a` as select col_notexist as mykey from
cp.`tpch/region.parquet`;
create table dfs.tmp.`t6/b` as select 100 as mykey from
cp.`tpch/region.parquet`;
select mykey from dfs.tmp.t6;
+--------+
| mykey |
+--------+
| null |
| null |
| null |
| null |
| null |
| 100 |
| 100 |
| 100 |
| 100 |
| 100 |
+--------+
select mykey from dfs.tmp.t6 where mykey is null;
+--------+
| mykey |
+--------+
+--------+
```
Notice that the last query returns 0 row, where it should return 5 rows.
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