Alexander Knopov created HIVE-21642:
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Summary: Hive server leaks memory on data insertion
Key: HIVE-21642
URL: https://issues.apache.org/jira/browse/HIVE-21642
Project: Hive
Issue Type: Bug
Components: HiveServer2
Affects Versions: 2.3.4
Environment: * Amazon Hadoop Distribution emr-5.20.0
* Master mode with 4 CPU and 16 GB RAM each
* Table files stored in S3 cloud storage
Reporter: Alexander Knopov
We are continuously loading data into Hive table stored in ORC format by
appending data in batches. We repeatedly have seen that over a span of few days
Hive server experience {{OutOfMemoryError}} exceptions that we believe are
caused by memory leaks.
Comparing heap dumps shows that most suspicious classes that show persistent
growth are and not recycled with GC are
* {{org.apache.hadoop.hive.ql.io.orc.OrcStruct$Field}}
*
{{org.apache.hadoop.hive.serde2.objectinspector.UnionStructObjectInspector$MyField}}
* {{String}}
Sample program used for stress test and heap dumps from 700 to 2500 GB can be
uploaded on request. They are too big for Jira backing store
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