[jira] [Commented] (HDDS-4138) Improve crc efficiency by using Java.util.zip.CRC when available

Tue, 23 Feb 2021 18:00:08 -0800 


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https://issues.apache.org/jira/browse/HDDS-4138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17289503#comment-17289503
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runzhiwang commented on HDDS-4138:
----------------------------------

sure，just do it



发自我的iPhone


------------------ Original ------------------
From: Stephen O'Donnell (Jira) <[email protected]&gt;
Date: Fri,Feb 5,2021 8:09 PM
To: 617072740 <[email protected]&gt;
Subject: Re: [jira] [Commented] (HDDS-4138) Improve crc efficiency




&nbsp;&nbsp;&nbsp; [ 
https://issues.apache.org/jira/browse/HDDS-4138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&amp;focusedCommentId=17279655#comment-17279655
 ] 

Stephen O'Donnell commented on HDDS-4138:
-----------------------------------------

[~yjxxtd] Are you happy for me to take ownership of this Jira? I have performed 
some benchmarks and I believe I know how we should improve the CRC performance.

&gt; Improve crc efficiency
&gt; ----------------------
&gt;
&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 Key: HDDS-4138
&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 URL: https://issues.apache.org/jira/browse/HDDS-4138
&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Project: Apache Ozone
&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Issue Type: Task
&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Reporter: runzhiwang
&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Assignee: runzhiwang
&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Priority: Major
&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Attachments: 
screenshot-1.png
&gt;
&gt;
&gt; HADOOP has implemented several method to calculate crc: 
https://issues.apache.org/jira/browse/HADOOP-15033
&gt; We should choose the method with high efficiency.
&gt; This flame graph is from [~elek]
&gt;&nbsp; !screenshot-1.png! 



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> Improve crc efficiency by using Java.util.zip.CRC when available
> ----------------------------------------------------------------
>
>                 Key: HDDS-4138
>                 URL: https://issues.apache.org/jira/browse/HDDS-4138
>             Project: Apache Ozone
>          Issue Type: Task
>            Reporter: runzhiwang
>            Assignee: Stephen O'Donnell
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: screenshot-1.png
>
>
> HADOOP has implemented several method to calculate crc: 
> https://issues.apache.org/jira/browse/HADOOP-15033
> We should choose the method with high efficiency.
> This flame graph is from [~elek]
>  !screenshot-1.png! 



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