You are viewing a plain text version of this content. The canonical link for it is here.
Posted to hdfs-issues@hadoop.apache.org by "Srinivasu Majeti (Jira)" <ji...@apache.org> on 2025/11/06 10:15:00 UTC
[jira] [Updated] (HDFS-17840) The "Nodes in Service" information is incorrect under DFS Storage Types in NameNode UI
[ https://issues.apache.org/jira/browse/HDFS-17840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Srinivasu Majeti updated HDFS-17840:
------------------------------------
Attachment: before_cdp_upgrade_namenode.png
> The "Nodes in Service" information is incorrect under DFS Storage Types in NameNode UI
> --------------------------------------------------------------------------------------
>
> Key: HDFS-17840
> URL: https://issues.apache.org/jira/browse/HDFS-17840
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.2.2
> Reporter: terrytlu
> Priority: Major
> Attachments: before_cdp_upgrade_namenode.png, image-2025-09-23-11-34-26-420.png, latest_nodes_in_service_namenode.png
>
>
> We found in our hadoop cluster, which has 26 nodes, while in NameNode UI, only show 3 nodes
> !image-2025-09-23-11-34-26-420.png|width=720,height=253!
> the problem still exists after merge https://issues.apache.org/jira/browse/HDFS-16402 ,this metric modification involves multiple data fields and heartbeat logic, it is difficult to guarantee atomicity.
>
> And the metrics are calculated using real-time increments and decrements, once it is corrupted, it cannot be restored. We recommend change the implementation to retrieve the data from org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager#datanodeMap to ensure that data is neither lost nor duplicated.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org