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https://issues.apache.org/jira/browse/DRILL-8483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17824832#comment-17824832
]
ASF GitHub Bot commented on DRILL-8483:
---
shfshihuafeng opened a new pull request, #2888:
URL: https://github.com/apache/drill/pull/2888
…exception during the process of building a hash table (#2887)
# [DRILL-8483](https://issues.apache.org/jira/browse/DRILL-8483):
SpilledRecordBatch memory leak when the program threw an exception during the
process of building a hash table
(Please replace `PR Title` with actual PR Title)
## Description
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
## Documentation
(Please describe user-visible changes similar to what should appear in the
Drill documentation.)
## Testing
prepare data for tpch 1s
1. 30 concurrent for tpch sql8
2. set direct memory 5g
3. when it had OutOfMemoryException , stopped all sql.
4. finding memory leak
test script
```
random_sql(){
#for i in `seq 1 3`
while true
do
num=$((RANDOM%22+1))
if [ -f $fileName ]; then
echo "$fileName" " is exit"
exit 0
else
$drill_home/sqlline -u \"jdbc:drillr:zk=ip:2181/drillbits_shf\" -f
tpch_sql8.sql >> sql8.log 2>&1
fi
done
}
main(){
#sleep 2h
#TPCH power test
for i in `seq 1 30`
do
random_sql &
done
}
```
> SpilledRecordBatch memory leak when the program threw an exception during the
> process of building a hash table
> --
>
> Key: DRILL-8483
> URL: https://issues.apache.org/jira/browse/DRILL-8483
> Project: Apache Drill
> Issue Type: Bug
> Components: Server
>Affects Versions: 1.21.1
>Reporter: shihuafeng
>Priority: Major
> Fix For: 1.21.2
>
>
> 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
> exception log as following
> {code:java}
> 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.(HashPartition.java:165){code}
>
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