[ 
https://issues.apache.org/jira/browse/HIVE-21642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Alexander Knopov updated HIVE-21642:
------------------------------------
    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



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Reply via email to