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https://issues.apache.org/jira/browse/DRILL-8478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17809982#comment-17809982
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ASF GitHub Bot commented on DRILL-8478:
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jnturton merged PR #2875:
URL: https://github.com/apache/drill/pull/2875
> HashPartition memory leak when exception
> -----------------------------------------
>
> Key: DRILL-8478
> URL: https://issues.apache.org/jira/browse/DRILL-8478
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 1.21.1
> Reporter: shihuafeng
> Priority: Major
> Fix For: 1.21.2
>
> Attachments:
> 0001-DRILL-8478.-HashPartition-memory-leak-when-it-alloca.patch
>
>
> *Describe the bug*
> hashpartition leak when allocate memory exception with OutOfMemoryException
> *To Reproduce*
> Steps to reproduce the behavior:
> # prepare data for tpch 1s
> # 20 concurrent for tpch sql8
> # set direct memory 5g
> # when it had OutOfMemoryException , stopped all sql.
> # 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
>
> sql
> {code:java}
> // 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
> {code}
>
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