[
https://issues.apache.org/jira/browse/HDFS-11139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Anu Engineer updated HDFS-11139:
--------------------------------
Labels: OzonePostMerge tocheck (was: ozoneMerge tocheck)
> Ozone: SCM: Handle duplicate Datanode ID
> -----------------------------------------
>
> Key: HDFS-11139
> URL: https://issues.apache.org/jira/browse/HDFS-11139
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Affects Versions: HDFS-7240
> Reporter: Anu Engineer
> Assignee: Anu Engineer
> Labels: OzonePostMerge, tocheck
> Fix For: HDFS-7240
>
>
> The Datanode ID is used when a data node registers. It is assumed that
> datanodes are unique across the cluster.
> However due to operator error or other cases we might encounter duplicate
> datanode ID. SCM should be able to recognize this and handle in correctly.
> Here is a sub-set of datanode scenarios it needs to handle.
> 1. Normal Datanode
> 2. Copy of a Datanode metadata by operator to another node
> 3. A Datanode being renamed - hostname change
> 4. Container Reports -- 2 machines with same datanode ID. SCM thinks they are
> same node.
> 5. Decommission -- we decommission both nodes if IDs are same.
> 6. Commands will be send to both nodes.
> So it is necessary that SCM identity when a datanode is reusing a datanode ID
> that is already used by another node.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
