[jira] [Commented] (HDDS-7262) Normalize DatanodeDetails to reduce cache memory footprint.

["Duong (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDDS-7262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17614193#comment-17614193 ] 

Duong commented on HDDS-7262:
-----------------------------

DatanodeDetails (per datanode Id) are mutable indeed. Datanode ID is generated the 1st time a datanode service is initialized on a host and stored in the host file system in a file called `datanode.id`. When the host DNS/IP gets reassigned, the Datanodedetails details is updated in SCM as per [heartbeat/re-register signal|https://github.com/apache/ozone/blob/master/hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/node/SCMNodeManager.java#L352-L352].

> Normalize DatanodeDetails to reduce cache memory footprint. 
> ------------------------------------------------------------
>
>                 Key: HDDS-7262
>                 URL: https://issues.apache.org/jira/browse/HDDS-7262
>             Project: Apache Ozone
>          Issue Type: Sub-task
>            Reporter: Duong
>            Priority: Major
>




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