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Reduce min PA/PHJ mem requirement.

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Update PA/PHJ to use small (< io sized buffers) initially. Without this we would
not be able to run at the QPS that we need just due to the buffering requirements
of these operators.

Change-Id: Ic8a777d147893567c9590fbab17f561eadb6ee19
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4623
Tested-by: jenkins
Reviewed-by: Nong Li <nong@cloudera.com>
This commit is contained in:
Nong Li
2014-09-15 23:42:50 -07:00
parent c84caf3957
commit 3e632ef6ad
19 changed files with 505 additions and 262 deletions
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21
testdata/workloads/functional-query/queries/QueryTest/spilling.test vendored
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@@ -138,4 +138,23 @@ select max(t1.total_count), max(t1.l_shipinstruct), max(t1.l_comment) from
6001215,'TAKE BACK RETURN','zzle? slyly final platelets sleep quickly. '
---- TYPES
BIGINT, STRING, STRING
====
---- QUERY
# Run this query with very low memory. Since the tables are small, the PA/PHJ should be
# using buffers much smaller than the io buffer.
set max_block_mgr_memory=10m;
select a.int_col, count(*)
from functional.alltypessmall a, functional.alltypessmall b, functional.alltypessmall c
where a.id = b.id and b.id = c.id group by a.int_col;
---- RESULTS
0,12
1,12
2,12
3,12
4,12
5,8
6,8
7,8
8,8
9,8
---- TYPES
INT, BIGINT