[jira] [Updated] (HDFS-16727) Consider reading chunk files using MappedByteBuffer

2022-08-10 Thread Wei-Chiu Chuang (Jira) 


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https://issues.apache.org/jira/browse/HDFS-16727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Wei-Chiu Chuang updated HDFS-16727:
---
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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[jira] [Updated] (HDFS-16727) Consider reading chunk files using MappedByteBuffer

2022-08-10 Thread Wei-Chiu Chuang (Jira) 


 [ 
https://issues.apache.org/jira/browse/HDFS-16727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Wei-Chiu Chuang updated HDFS-16727:
---
Attachment: ozone_dn-rhel03.ozone.cisco.local.html

> 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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