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https://issues.apache.org/jira/browse/HDFS-16727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei-Chiu Chuang updated HDFS-16727:
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Attachment: Screen Shot 2022-08-04 at 7.12.55 AM.png
> Consider reading chunk files using MappedByteBuffer
> ---------------------------------------------------
>
> Key: HDFS-16727
> URL: https://issues.apache.org/jira/browse/HDFS-16727
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Wei-Chiu Chuang
> Priority: Major
> Attachments: Screen Shot 2022-08-04 at 7.12.55 AM.png,
> ozone_dn-rhel03.ozone.cisco.local.html
>
>
> Running Impala TPC-DS which stresses Ozone DN read path.
> BufferUtils#assignByteBuffers stands out as one of the offender.
> We can experiment with MappedByteBuffer and see if it makes performance
> better.
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