shfshihuafeng opened a new issue, #2887:
URL: https://github.com/apache/drill/issues/2887
Before submitting a bug report, please verify that you are using the most
current version of Drill.
**Describe the bug**
During the process of reading data from disk to building hash tables in
memory, if an exception is thrown, it will result in a memory
SpilledRecordBatch leak
**To Reproduce**
prepare data for tpch 1s
1. 20 concurrent for tpch sql8
2.set direct memory 5g
3.when it had OutOfMemoryException , stopped all sql.
5.finding memory leak
**Expected behavior**
when all sql sop , we find direct memory is not 0 AND could find leak log
like following.
`Allocator(op:5:0:1:HashJoinPOP) 1000000/98304/22822912/41943040
(res/actual/peak/limit)`
**Error detail, log output or screenshots**
```
Caused by: org.apache.drill.exec.exception.OutOfMemoryException: Unable to
allocate buffer of size 8192 due to memory limit (41943040). Current
allocation: 3684352
at
org.apache.drill.exec.memory.BaseAllocator.buffer(BaseAllocator.java:241)
at
org.apache.drill.exec.memory.BaseAllocator.buffer(BaseAllocator.java:216)
at
org.apache.drill.exec.vector.VarCharVector.allocateNew(VarCharVector.java:411)
at
org.apache.drill.exec.vector.NullableVarCharVector.allocateNew(NullableVarCharVector.java:270)
at
org.apache.drill.exec.physical.impl.common.HashPartition.allocateNewVectorContainer(HashPartition.java:215)
at
org.apache.drill.exec.physical.impl.common.HashPartition.allocateNewCurrentBatchAndHV(HashPartition.java:238)
at
org.apache.drill.exec.physical.impl.common.HashPartition.<init>(HashPartition.java:165)
```
**Drill version**
The version of Drill you encountered the issue in.
**Additional context**
`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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