[
https://issues.apache.org/jira/browse/HDFS-1408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Konstantin Boudnik updated HDFS-1408:
-------------------------------------
Attachment: jmx.patch
This patch has the implementation for JMX client in herriot.
Unfortunately, current JMX beans implementation in Hadoop doesn't provide
notification broadcasting functionality so attributes can't be updated
dynamically.
This patch is for y20-security and I'll split it for 0.22
> 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: HADOOP-6927.y20s.patch, HDFS-1408.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.
