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IMPALA-4163: Add sortby() query hint

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This change introduces the sortby() query plan hint for insert
statements. When specified, sortby(a, b) will add an additional sort
step to the plan to order data by columns a, b before inserting it into
the target table.

Change-Id: I37a3ffab99aaa5d5a4fd1ac674b3e8b394a3c4c0
Reviewed-on: http://gerrit.cloudera.org:8080/5051
Reviewed-by: Marcel Kornacker <marcel@cloudera.com>
Tested-by: Internal Jenkins
This commit is contained in:
Lars Volker
2016-11-08 14:03:59 +01:00
committed by Internal Jenkins
parent 68131b3115
commit ce9b332ee9
13 changed files with 490 additions and 140 deletions
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26
testdata/workloads/functional-query/queries/QueryTest/insert.test vendored
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@@ -945,3 +945,29 @@ RESET alltypesnopart_insert
---- RESULTS
: 100
====
---- QUERY
# IMPALA-4163: insert into table sortby() plan hint
insert into table alltypesinsert
partition (year, month) /*+ clustered,shuffle,sortby(int_col, bool_col) */
select * from alltypestiny;
---- SETUP
DROP PARTITIONS alltypesinsert
RESET alltypesinsert
---- RESULTS
year=2009/month=1/: 2
year=2009/month=2/: 2
year=2009/month=3/: 2
year=2009/month=4/: 2
====
---- QUERY
# IMPALA-4163: insert into table sortby() plan hint
insert into table alltypesnopart_insert
/*+ clustered,shuffle,sortby(int_col, bool_col) */
select id, bool_col, tinyint_col, smallint_col, int_col, bigint_col, float_col,
double_col, date_string_col, string_col, timestamp_col from alltypestiny;
---- SETUP
DROP PARTITIONS alltypesinsert
RESET alltypesinsert
---- RESULTS
: 8
====