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https://issues.apache.org/jira/browse/HIVE-21642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Knopov updated HIVE-21642:
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Description:
We are continuously loading data into Hive table backed by files in ORC format
by appending data in batches. We repeatedly have seen that over a span of few
days Hive server experiences {{OutOfMemoryError}} exceptions that we believe
are caused by memory leaks.
Comparison of heap dumps shows that most suspicious classes that show
persistent growth 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
was:
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
> 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
> * Table files stored in S3 cloud storage
> Reporter: Alexander Knopov
> Priority: Major
>
> We are continuously loading data into Hive table backed by files in ORC
> format by appending data in batches. We repeatedly have seen that over a span
> of few days Hive server experiences {{OutOfMemoryError}} exceptions that we
> believe are caused by memory leaks.
> Comparison of heap dumps shows that most suspicious classes that show
> persistent growth 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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