[
https://issues.apache.org/jira/browse/HADOOP-993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12481401
]
Yoram Arnon commented on HADOOP-993:
------------------------------------
ah, but persistency across restarts is key. that's when errors happen most
often.
Currently the information seems persistent. In our DFS I see nodes that
connected once only, many restarts ago.
Perhaps removing the functionality from the namenode can be postponed until
equivalent functionality is introduced in helper applications.
> Namenode does not need to store any data node info persistently.
> ----------------------------------------------------------------
>
> Key: HADOOP-993
> URL: https://issues.apache.org/jira/browse/HADOOP-993
> Project: Hadoop
> Issue Type: Improvement
> Components: dfs
> Reporter: Raghu Angadi
> Assigned To: Sameer Paranjpye
> Attachments: noDatanodesInFsimage.patch
>
>
> Namenode does not need to serialize datanode info. It will map datanode to
> storageID when datanode register.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
