Github user arina-ielchiieva commented on the issue:
https://github.com/apache/drill/pull/889
@weijietong regarding the unit test, I have tried to reproduce the problem
and written the following unit test:
```
@Test
public void test() throws Exception {
FileSystem fs = null;
try {
fs = FileSystem.get(new Configuration());
// create table with partition pruning
test("use dfs_test.tmp");
String tableName = "table_with_pruning";
Path dataFile = new
Path(TestTools.getWorkingPath(),"src/test/resources/parquet/alltypes_required.parquet");
test("create table %s partition by (col_int) as select * from
dfs.`%s`", tableName, dataFile);
// generate metadata
test("refresh table metadata `%s`", tableName);
// execute query
String query = String.format("select count(distinct col_int),
count(distinct col_chr) from `%s` where col_int = 45436", tableName);
test(query);
} finally {
if (fs != null) {
fs.close();
}
}
}
```
`AbstractGroupScan.getScanStats` method returns one row but it does not
fail. Can you please take a look?
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