Qifan Chen 63146103a7
IMPALA-9355: TestExchangeMemUsage.test_exchange_mem_usage_scaling doesn't hit the memory limit ...
This patch reduces the memory limit for the following query in
test_exchange_mem_usage_scaling test from 170MB to 164MB
to reduce the chance of not detecting a memory allocation
failure.
set mem_limit=<limit_in_mb>
set num_scanner_threads=1;
select *
from tpch_parquet.lineitem l1
join tpch_parquet.lineitem l2 on l1.l_orderkey = l2.l_orderkey and
l1.l_partkey = l2.l_partkey and l1.l_suppkey = l2.l_suppkey
and l1.l_linenumber = l2.l_linenumber
order by l1.l_orderkey desc, l1.l_partkey, l1.l_suppkey,
l1.l_linenumber limit 5;
In a test with 500 executions of the above query with the memory
limit set to 164MB, there were 500 memory allocation failures in
total (one in each execution), and a total of 266 of them from
Exchange Node #4 .
Testing:
Ran the query in question individually;
Ran TestExchangeMemUsage.test_exchange_mem_usage_scaling test;
Ran core tests.
Change-Id: Id945d7e37fac07beb7808e6ccf8530e667cbaad4
Reviewed-on: http://gerrit.cloudera.org:8080/16791
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com >
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com >
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