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https://issues.apache.org/jira/browse/HADOOP-5094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jakob Homan updated HADOOP-5094:
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Attachment: HADOOP-5094.patch
Updated patch to add code to include the hostname in parens after ip addr, if
it can be determined. If not, nothing is printed.
Good on unit tests except the usual suspect. Again, just a change in output,
so no new unit test:
{noformat}
[exec] -1 overall.
[exec]
[exec] +1 @author. The patch does not contain any @author tags.
[exec]
[exec] -1 tests included. The patch doesn't appear to include any new
or modified tests.
[exec] Please justify why no tests are needed for
this patch.
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[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
[exec]
[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
[exec]
[exec] +1 findbugs. The patch does not introduce any new Findbugs
warnings.
[exec]
[exec] +1 Eclipse classpath. The patch retains Eclipse classpath
integrity.
[exec]
[exec] +1 release audit. The applied patch does not increase the
total number of release audit warnings.
{noformat}
> Show dead nodes information in dfsadmin -report
> -----------------------------------------------
>
> Key: HADOOP-5094
> URL: https://issues.apache.org/jira/browse/HADOOP-5094
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Affects Versions: 0.18.2
> Reporter: Jim Huang
> Assignee: Jakob Homan
> Priority: Minor
> Fix For: 0.21.0
>
> Attachments: HADOOP-5094.patch, HADOOP-5094.patch
>
>
> As part of operations responsibility to bring back dead nodes, it will be
> good to have a quick way to obtain a list of dead data nodes.
> The current way is to scrape the namenode web UI page and parse that
> information, but this creates load on the namenode.
> In search of a less costly way, I noticed dfsadmin -report only reports data
> nodes with State: "In Service" and "Decommission in progress" get listed.
> Asking for a cheap way to obtain a list of dead nodes.
> In addition, can the following requests be reviewed for additional
> enhancement and changes to dfsadmin -report.
> - Consistent formatting output in "Remaining raw bytes:" for the data nodes
> should have a space between the exact value and the parenthesized value.
> Sample:
> Total raw bytes: 3842232975360 (3.49 TB)
> Remaining raw bytes: 146090593065(136.06 GB)
> Used raw bytes: 3240864964620 (2.95 TB)
> - Include the running version of Hadoop.
> - What is the meaning of "Total effective bytes"?
> - Display the hostname instead of the IP address for the data node (toggle
> option?)
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