shfshihuafeng opened a new issue, #2876:
URL: https://github.com/apache/drill/issues/2876
Before submitting a bug report, please verify that you are using the most
current version of Drill.
**Describe the bug**
mergejoin memory leak when Depleting incoming batches throw exception.
because we could close rightIterator when leftIterator throw exception
**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**
when all sql sop , we should find direct memory is 0 AND could not find
leak log like following.
`Allocator(op:2:0:11:MergeJoinPOP) 1000000/73728/4874240/10000000000
(res/actual/peak/limit)`
**Error detail, log output or screenshots**
`Unable to allocate buffer of size XX (rounded from XX) due to memory limit
(). Current allocation: xx`
**Drill version**
The version of Drill you encountered the issue in.
**Additional context**
// code placeholder
`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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