shfshihuafeng opened a new issue, #2874:
URL: https://github.com/apache/drill/issues/2874
Before submitting a bug report, please verify that you are using the most
current version of Drill.
**Describe the bug**
hashpartition leak when allocate memory exception with OutOfMemoryException
**To Reproduce**
Steps to reproduce the behavior:
1. prepare data for tpch 1s
2. 20 concurrent for tpch sql8
3. set direct memory 5g
4. when it had OutOfMemoryException , stopped all sql.
5. finding memory leak
**Expected behavior**
(1)i set {DRILL_MAX_DIRECT_MEMORY:-"5G"}
(2) i run sql8 (sql detail as Additional context) with 20 concurrent
(3) it had OutOfMemoryException when create hashPartion
**Error detail, log output or screenshots**
Unable to allocate buffer of size 262144 (rounded from 262140) due to memory
limit (41943040). Current allocation: 20447232
**Drill version**
drill 2.0
**Additional context**
Add any other context about the problem here.
```
select
o_year,
sum(case when nation = 'CHINA' then volume else 0 end) / sum(volume) as
mkt_share
from (
select
extract(year from o_orderdate) as o_year,
l_extendedprice * 1.0 as volume,
n2.n_name as nation
from hive.tpch1s.part, hive.tpch1s.supplier, hive.tpch1s.lineitem,
hive.tpch1s.orders, hive.tpch1s.customer, hive.tpch1s.nation n1,
hive.tpch1s.nation n2, hive.tpch1s.region
where
p_partkey = l_partkey
and s_suppkey = l_suppkey
and l_orderkey = o_orderkey
and o_custkey = c_custkey
and c_nationkey = n1.n_nationkey
and n1.n_regionkey = r_regionkey
and r_name = 'ASIA'
and s_nationkey = n2.n_nationkey
and o_orderdate between date '1995-01-01'
and date '1996-12-31'
and p_type = 'LARGE BRUSHED BRASS') as all_nations
group by o_year
order by o_year
```
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