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Kudu does not allocate null bytes if all projected columns are non-nullable. Otherwise, Kudu allocates a null bit for all columns, even the non-nullable ones. The bug was that Impala's memory layout did not match the first requirement. Change-Id: I762ad9d5cc4198922ea4b5218c504fde355c49a5 Reviewed-on: http://gerrit.cloudera.org:8080/4892 Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com> Tested-by: Internal Jenkins
58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
====
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---- QUERY
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# Make sure LIMIT is enforced.
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select * from functional_kudu.dimtbl order by id limit 1;
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---- RESULTS
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1001,'Name1',94611
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---- TYPES
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BIGINT, STRING, INT
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====
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---- QUERY
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# Make sure that we can list the columns to be scanned in any order, that predicates
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# work and that we can have predicates on columns not referenced elsewhere.
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select zip, id from functional_kudu.dimtbl where id >= 1000 and 1002 >= id and
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94611 = zip and 'Name1' = name order by id;
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---- RESULTS
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94611,1001
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---- TYPES
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INT, BIGINT
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====
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---- QUERY
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# Regression test for IMPALA-2740, a NULL value from a previously filtered row would
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# carry over into the next unfiltered row (the result below would incorrectly be 2,NULL).
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CREATE TABLE impala_2740 (key INT PRIMARY KEY, value INT)
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DISTRIBUTE BY HASH (key) INTO 3 BUCKETS STORED AS KUDU;
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INSERT INTO impala_2740 VALUES (1, NULL), (2, -2);
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SELECT * FROM impala_2740 WHERE key != 1;
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---- RESULTS
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2,-2
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---- TYPES
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INT, INT
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====
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---- QUERY
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# Regression test for IMPALA-2635, the Kudu scanner hangs waiting for data from scanner
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# threads that are never started. The union and both scans land in the same fragment which
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# is run on all impalads. However, for the t1 table there is only as single scan range,
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# so two of the scan instances get empty scan ranges.
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CREATE TABLE impala_2635_t1 (id BIGINT PRIMARY KEY, name STRING)
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DISTRIBUTE BY HASH (id) INTO 3 BUCKETS STORED AS KUDU;
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CREATE TABLE impala_2635_t2 (id BIGINT PRIMARY KEY, name STRING)
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DISTRIBUTE BY HASH(id) INTO 16 BUCKETS STORED AS KUDU;
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INSERT INTO impala_2635_t1 VALUES (0, 'Foo');
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INSERT INTO impala_2635_t2 VALUES (1, 'Blah');
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SELECT * FROM impala_2635_t1 UNION ALL SELECT * FROM impala_2635_t2;
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---- RESULTS
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0,'Foo'
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1,'Blah'
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---- TYPES
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BIGINT, STRING
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====
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---- QUERY
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# IMPALA-4408: Test Kudu scans where all materialized slots are non-nullable.
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select count(int_col) from functional_kudu.tinyinttable
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---- RESULTS
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10
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---- TYPES
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BIGINT
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====
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