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Posted to hdfs-issues@hadoop.apache.org by "Eli Collins (JIRA)" <ji...@apache.org> on 2012/09/02 02:56:07 UTC
[jira] [Commented] (HDFS-3869) QJM: expose non-file journal manager
details in web UI
[ https://issues.apache.org/jira/browse/HDFS-3869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13446847#comment-13446847 ]
Eli Collins commented on HDFS-3869:
-----------------------------------
+1 looks great
I'd consider mentioning in a comment above journals that is COW because even though FSEdit* is synchronized these uses may race with the Web UI (my understanding of why it is now a CopyOnWriteArrayList).
> QJM: expose non-file journal manager details in web UI
> ------------------------------------------------------
>
> Key: HDFS-3869
> URL: https://issues.apache.org/jira/browse/HDFS-3869
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Affects Versions: QuorumJournalManager (HDFS-3077)
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: dir-failed.png, hdfs-3869.txt, hdfs-3869.txt, lagging-jn.png, open-for-read.png, open-for-write.png
>
>
> Currently, the NN web UI only contains NN storage directories on local disk. It should also include details about any non-file JournalManagers in use.
> This JIRA targets the QJM branch, but will be useful for BKJM as well.
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