[jira] [Commented] (ROCKETMQ-190) About mapperFile unmap . MQ memory use growing , mem use only release at 04:00 AM delete file ,unmap the logFile

["Eric Liu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ROCKETMQ-190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15985979#comment-15985979 ] 

Eric Liu commented on ROCKETMQ-190:
-----------------------------------

Yes, It's true broker will delete expired files at 04:00 AM or disk is full.

You could change the value of MessageStoreConfig.diskMaxUsedSpaceRatio or MessageStoreConfig.fileReservedTime to control it.

> About mapperFile unmap .  MQ memory use growing  , mem use only release at 04:00 AM delete file ,unmap the logFile 
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: ROCKETMQ-190
>                 URL: https://issues.apache.org/jira/browse/ROCKETMQ-190
>             Project: Apache RocketMQ
>          Issue Type: Improvement
>          Components: rocketmq-store
>            Reporter: zhaoziyan
>            Assignee: yukon
>         Attachments: mqmem.png, unmap.png
>
>
> MQ version is 3.4.6 
> jdk 1.6 
> I have look the 4.0.0 code . unmmap the  mapperFile ,the logic almost same.
> this is the log and MQ mem use monitor 
> The MQ use grow until 04:00 AM delete file 



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