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https://issues.apache.org/jira/browse/HDFS-12781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16247018#comment-16247018
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Brahma Reddy Battula commented on HDFS-12781:
---------------------------------------------
bq.It seems the workaround() function is trying to get the LiveNodes and return
them as an array that DataTables.js can consume
It's return all the nodes.Please see the following snippet when it's called
workaround().
{code}
r.LiveNodes = node_map_to_array(JSON.parse(r.LiveNodes));
augment_live_nodes(r.LiveNodes);
r.DeadNodes = node_map_to_array(JSON.parse(r.DeadNodes));
augment_dead_nodes(r.DeadNodes);
r.DecomNodes = node_map_to_array(JSON.parse(r.DecomNodes));
r.EnteringMaintenanceNodes =
node_map_to_array(JSON.parse(r.EnteringMaintenanceNodes));
return r;
{code}
So,Following will be nodes info after calling the {{workaround()}}.
{noformat}
<tr><td ng-value="alive-BLR1000006586:50076" class="dfshealth-node-icon
dfshealth-node-alive">BLR1000006586:50076 (*.*.105.92:50076)</td><td
ng-value="alive-BLR1000006586:50076"><a
href='http://BLR1000006586:9864'>http://BLR1000006586:9864</a></td><td
ng-value="2">2s</td><td ng-value="5">5m</td><td ng-value="62"><div><div
style="display:inline-block; float: left; padding-right: 10px;">147.65
GB</div><div class="clearfix progress dfshealth-node-capacity-bar" title="Non
DFS: 89.59 GB, Used: 1.68 GB"><div class="progress-bar progress-bar-success"
style="width: 62%"></div></div></div></td><td title="Blocks Scheduled :
0">247</td><td ng-value="1.1375871">1.68 GB
(1.14%)</td><td>3.0.0-beta1</td></tr>
<tr><td ng-value="alive-BLR1000006596:50076" class="dfshealth-node-icon
dfshealth-node-alive">BLR1000006596:50076 (*.*.109.205:50076)</td><td
ng-value="alive-BLR1000006596:50076"><a
href='http://BLR1000006596:50075'>http://BLR1000006596:50075</a></td><td
ng-value="2">2s</td><td ng-value="4">4m</td><td ng-value="65"><div><div
style="display:inline-block; float: left; padding-right: 10px;">147.65
GB</div><div class="clearfix progress dfshealth-node-capacity-bar" title="Non
DFS: 93.63 GB, Used: 1.68 GB"><div class="progress-bar progress-bar-success"
style="width: 65%"></div></div></div></td><td title="Blocks Scheduled :
0">247</td><td ng-value="1.1375792">1.68 GB (1.14%)</td><td>2.7.4</td></tr>
<tr class="danger"><td ng-value="down-BLR1000006554:50076"
class="dfshealth-node-icon dfshealth-node-down">BLR1000006554:50076
(*.*.97.117:50076)</td><td></td><td>Thu Nov 02 19:57:09 +0530
2017</td><td></td><td></td><td></td><td></td></tr></table>
{noformat}
bq.If it is only recently dead, which coloumn of data doesn't exist?
As we can't get the metrics, {{Http Address}},{{Last Block
Report}},{{Capacity}},{{Blocks}},{{Block pool used}},{{Version}} will be null.
Check following Json and {{data}} after workaround call.
{noformat}
"DeadNodes" :
"{\"BLR1000006554:50076\":{\"lastContact\":594774,\"decommissioned\":false,\"adminState\":\"In
Service\",\"xferaddr\":\"*.*.97.117:50076\"}}",
<tr class="danger"><td ng-value="down-BLR1000006554:50076"
class="dfshealth-node-icon dfshealth-node-down">BLR1000006554:50076
(*.*.97.117:50076)</td><td></td><td>Thu Nov 02 19:57:09 +0530
2017</td><td></td><td></td><td></td><td></td></tr></table>
{noformat}
> After Datanode down, In Namenode UI Datanode tab is throwing warning message.
> -----------------------------------------------------------------------------
>
> Key: HDFS-12781
> URL: https://issues.apache.org/jira/browse/HDFS-12781
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.9.0, 3.0.0-alpha1
> Reporter: Harshakiran Reddy
> Assignee: Brahma Reddy Battula
> Attachments: HDFS-12781-001.patch
>
>
> Scenario:
> Stop one Datanode
> Refresh or click on the Datanode tab in namenode UI.
> Actual Output:
> ==============
> it's throwing the warning message. please find the bellow warning message.
> DataTables warning: table id=table-datanodes - Requested unknown parameter
> '7' for row 2. For more information about this error, please see
> http://datatables.net/tn/4
> Expected Output:
> ================
> whenever you click on Datanode tab,it should be display the datanodes
> information.
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