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https://issues.apache.org/jira/browse/HDDS-8897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17735735#comment-17735735
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GuoHao commented on HDDS-8897:
------------------------------

[~sodonnell] 

My guess is that the lock in this method is causing

see: 

https://github.com/apache/ozone/blob/master/hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/pipeline/WritableECContainerProvider.java#L94

> ec container has too high latency when allocate blocks
> ------------------------------------------------------
>
>                 Key: HDDS-8897
>                 URL: https://issues.apache.org/jira/browse/HDDS-8897
>             Project: Apache Ozone
>          Issue Type: Improvement
>            Reporter: GuoHao
>            Assignee: Stephen O'Donnell
>            Priority: Blocker
>         Attachments: image-2023-06-21-21-58-15-052.png, 
> image-2023-06-21-21-58-50-518.png
>
>
> ec container has too high latency when allocate blocks
>  
> I use ec in a high concurrency situation, I configure the metric on scm, and 
> as concurrency gradually increases, the latency of the allocate block 
> increases.
>  
> allocate block ops:
> !image-2023-06-21-21-58-50-518.png!
>  
> average latency:
> !image-2023-06-21-21-58-15-052.png!
>  



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