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IMPALA-1016: Return correct number of NULL values when projecting newly added column

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This patch handles the case where when a query was projecting a newly added column,
the parquet scanner was returning infinite values.

Change-Id: Ie5f4d4a88d5868e8d9e5c39fa9440821776dde3c
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2725
Reviewed-by: Marcel Kornacker <marcel@cloudera.com>
Tested-by: jenkins
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2761
Reviewed-by: Ippokratis Pandis <ipandis@cloudera.com>
This commit is contained in:
Ippokratis Pandis
2014-05-28 19:49:14 -07:00
committed by jenkins
parent 8f4dc0f2f0
commit e34ede292c
3 changed files with 156 additions and 20 deletions
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108
testdata/workloads/functional-query/queries/QueryTest/alter-table.test vendored
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@@ -567,3 +567,111 @@ Total,,200,2,regex:.+KB,'0B',''
---- TYPES
INT, INT, BIGINT, BIGINT, STRING, STRING, STRING
====
---- QUERY
# IMPALA-1016: Testing scanning newly added columns
DROP TABLE IF EXISTS imp1016
====
---- QUERY
CREATE TABLE imp1016 (string1 string)
---- RESULTS
====
---- QUERY
INSERT INTO imp1016 VALUES ('test')
---- RESULTS
: 1
====
---- QUERY
ALTER TABLE imp1016 ADD COLUMNS (string2 string)
---- RESULTS
====
---- QUERY
DESCRIBE imp1016
---- RESULTS
'string1','string',''
'string2','string',''
---- TYPES
string,string,string
====
---- QUERY
SELECT * FROM imp1016
---- RESULTS
'test','NULL'
---- TYPES
string,string
====
---- QUERY
SELECT string1 FROM imp1016
---- RESULTS
'test'
---- TYPES
string
====
---- QUERY
SELECT string2 FROM imp1016
---- RESULTS
'NULL'
---- TYPES
string
====
---- QUERY
SELECT COUNT(DISTINCT string1) FROM imp1016
---- RESULTS
1
---- TYPES
bigint
====
---- QUERY
SELECT COUNT(DISTINCT string2) FROM imp1016
---- RESULTS
0
---- TYPES
bigint
====
---- QUERY
# Create a larger table to test scanning newly added columns
DROP TABLE IF EXISTS imp1016Large
====
---- QUERY
CREATE TABLE imp1016Large (string1 string)
---- RESULTS
====
---- QUERY
# There is a codepath that operates on chunks of 1024 tuples, inserting
# more than 1024 tuples
INSERT INTO imp1016Large SELECT 'test' FROM functional.alltypes LIMIT 2000
---- RESULTS
: 2000
====
---- QUERY
ALTER TABLE imp1016Large ADD COLUMNS (string2 string)
---- RESULTS
====
---- QUERY
DESCRIBE imp1016Large
---- RESULTS
'string1','string',''
'string2','string',''
---- TYPES
string,string,string
====
---- QUERY
SELECT COUNT(string2) FROM imp1016Large
---- RESULTS
0
---- TYPES
bigint
====
---- QUERY
SELECT COUNT(*), COUNT(DISTINCT string1) FROM imp1016Large
---- RESULTS
2000,1
---- TYPES
bigint,bigint
====
---- QUERY
SELECT COUNT(*), COUNT(DISTINCT string2) FROM imp1016Large
---- RESULTS
2000,0
---- TYPES
bigint,bigint
====