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9af59bfe2b
This change adds test coverage for the fixes committed for
IMPALA-2399 in commit 9ed3b685a1.
It uses the table nulltable in the workload functional-query
to verify the materialization and counting of NULL and empty-
valued columns. The test can be run on any supported storage
and compression combination.
Change-Id: I23923f95f43d67977ee1520a1fc09ce297548b3f
Reviewed-on: http://gerrit.cloudera.org:8080/4755
Tested-by: Internal Jenkins
Reviewed-by: Jim Apple <jbapple@cloudera.com>
77 lines
2.0 KiB
Plaintext
77 lines
2.0 KiB
Plaintext
====
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---- QUERY
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# This query will do a full table scan, doing a simple aggregation on all cols with
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# a simple predicate
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select count(*),
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sum(id), count(bool_col), sum(tinyint_col), sum(smallint_col),
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sum(int_col), sum(bigint_col), max(float_col), max(double_col),
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max(date_string_col), max(string_col), max(timestamp_col)
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from alltypesagg
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where id % 2 = 0 and day is not null
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---- RESULTS
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5000,24995000,5000,20000,245000,2495000,24950000,1097.800048828125,10079.8,'01/10/10','998',2010-01-10 18:00:55.300000000
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---- TYPES
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BIGINT, BIGINT, BIGINT, BIGINT, BIGINT, BIGINT, BIGINT, FLOAT, DOUBLE, STRING, STRING, TIMESTAMP
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====
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---- QUERY
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# This query will do a join, projecting one string col from each table.
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# This is interesting because the join contains string cols which causes the scanners
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# to do different memory handling.
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select sum(t1.id), sum(t1.int_col),max(t1.date_string_col), max(t2.string_col)
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from alltypesagg t1
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inner join alltypesagg t2
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on t1.id = t2.id and t1.day is not null and t2.day is not null
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---- RESULTS
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49995000,4995000,'01/10/10','999'
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---- TYPES
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BIGINT, BIGINT, STRING, STRING
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====
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---- QUERY
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# This query does a top-n on non-string cols. This is different because without
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# string cols, scanners will handle io buffers differently. They don't need to
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# be passed up the execution tree.
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select id, bool_col, int_col
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from alltypesagg where day is not null
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order by 1 desc, 2 desc, 3 desc
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limit 10
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---- RESULTS
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9999,false,999
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9998,true,998
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9997,false,997
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9996,true,996
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9995,false,995
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9994,true,994
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9993,false,993
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9992,true,992
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9991,false,991
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9990,true,990
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---- TYPES
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INT, BOOLEAN, INT
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====
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---- QUERY
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# The next sequence of queries is a regression test for IMPALA-4153
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# verifying the retrieval of empty and NULL string columns
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select count(*)
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from nulltable
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---- RESULTS
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1
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---- TYPES
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BIGINT
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====
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---- QUERY
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select count(*)
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from nulltable where b = ''
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---- RESULTS
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1
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---- TYPES
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BIGINT
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====
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---- QUERY
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select a,b
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from nulltable where b = ''
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---- RESULTS
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'a',''
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---- TYPES
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STRING, STRING
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====
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