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Posted to issues@ratis.apache.org by "Lokesh Jain (Jira)" <ji...@apache.org> on 2019/10/22 06:16:00 UTC

[jira] [Commented] (RATIS-727) Garbage collection due to same request retries on a follower

    [ https://issues.apache.org/jira/browse/RATIS-727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16956720#comment-16956720 ] 

Lokesh Jain commented on RATIS-727:
-----------------------------------

[~szetszwo] I do not think this is related to RATIS-704. Here client request with same callID is retried 7 times on the same follower. Every time it is rejected with NotLeaderException.

> Garbage collection due to same request retries on a follower
> ------------------------------------------------------------
>
>                 Key: RATIS-727
>                 URL: https://issues.apache.org/jira/browse/RATIS-727
>             Project: Ratis
>          Issue Type: Bug
>          Components: client
>            Reporter: Lokesh Jain
>            Priority: Major
>
> In a heap dump it could be seen that a client request retries on the same follower multiple times and every time the request is rejected with a NotLeaderException. In case of Ozone it is a WriteChunk request which leads to garbage collection of 16MB for every request. In the heap dump a client request retries multiple times leading to garbage collection of ~100MB.



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