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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-22831) Long running spark app gets slower and slower over time,Maybe cause by unsafe/Platform
Date Tue, 19 Dec 2017 13:38:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-22831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen resolved SPARK-22831.
-------------------------------
    Resolution: Invalid

This is unclear, and not specific. I think at best you could rewrite this and start a thread
on the mailing list right now.

> Long running spark app gets slower and slower over time,Maybe cause by unsafe/Platform
> --------------------------------------------------------------------------------------
>
>                 Key: SPARK-22831
>                 URL: https://issues.apache.org/jira/browse/SPARK-22831
>             Project: Spark
>          Issue Type: Bug
>          Components: Java API, Spark Core, SQL
>    Affects Versions: 2.1.0
>         Environment: * Linux
> * yarn-client
> * jdk7
> * spark2.1
> * scala-2.11.8
>            Reporter: dingdong
>
> I have a long running spark app running on yarn.I load the data which is about 150G from
hbase and cached it in the memory.
> This app provide ad-hoc query with sparkSql.At the beginning,the spark is very fast that
just take a few seconds per job.
> But after a few hours later,the spark running slower and slower until take over one minute
per job.After profiling  with jvisualvm,I found that the methods of unsafe/platform (Platform.getLong
etc) take most of the time.



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