hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Konstantin Boudnik (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1408) Herriot NN and DN clients should vend statistics
Date Thu, 11 Nov 2010 22:28:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12931239#action_12931239

Konstantin Boudnik commented on HDFS-1408:

bq. On trunk when I do "ant inject-system-faults", I get the following errors. Is this related
to this change? 

Awesome... I have committed only CHANGES.txt modification :( Thanks for catching it up, I
have delivered second commit with the change itself. Sorry about any inconvenience.

bq. Additionally can you comment on this -1 from your test patch results:

Actually, I have in  [here|https://issues.apache.org/jira/browse/HDFS-1408?focusedCommentId=12931138&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12931138]
- there seems to be some crazy issue with test-patch: even if executed on an empty patch it
shows 97 warnings.

> Herriot NN and DN clients should vend statistics
> ------------------------------------------------
>                 Key: HDFS-1408
>                 URL: https://issues.apache.org/jira/browse/HDFS-1408
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: test
>    Affects Versions: 0.22.0
>            Reporter: Al Thompson
>            Assignee: Konstantin Boudnik
>         Attachments: add_JMXlisteners.patch, HADOOP-6927.y20s.patch, HDFS-1408.patch,
HDFS-1408.patch, HDFS-1408.patch, HDFS-1408.patch, jmx.patch, jmx.patch, jmx.patch, jmx.patch
> The HDFS web user interface serves useful information through dfshealth.jsp and dfsnodelist.jsp.
> The Herriot interface to the namenode and datanode (as implemented in NNClient and DNClient,
respectively) would benefit from the addition of some way to channel this information. In
the case of DNClient this can be an injected method that returns a DatanodeDescriptor relevant
to the underlying datanode.
> There seems to be no analagous NamenodeDescriptor. It may be useful to add this as a
facade to a visitor that aggregates values across the filesystem datanodes. These values are
(from dfshealth JSP):
> Configured Capacity
> DFS Used
> Non DFS Used
> DFS Remaining
> DFS Used%
> DFS Remaining%
> Live Nodes
> Dead Nodes
> Decommissioning Nodes
> Number of Under-Replicated Blocks
> Attributes reflecting the web user interface header may also be useful such as When-Started,
Version, When-Compiled, and Upgrade-Status.
> A NamenodeDescriptor would essentially "push down" the code in dfshealth web UI behind
a more general abstraction. If it is objectionable to make this class available in HDFS, perhaps
this could be packaged in a Herriot specific way.

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message