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https://issues.apache.org/jira/browse/AMBARI-3238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13767380#comment-13767380
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Sumit Mohanty commented on AMBARI-3238:
---------------------------------------
This is because, the decommission task is not processed properly resulting in
agent sending back a heartbeat response that is not parsable by the server.
Thus the server does not receive heartbeat.
> 1st host on a 2-node cluster goes to heartbeat lost state in UI after
> decommissioning datanode on 2ond host
> -----------------------------------------------------------------------------------------------------------
>
> Key: AMBARI-3238
> URL: https://issues.apache.org/jira/browse/AMBARI-3238
> Project: Ambari
> Issue Type: Bug
> Affects Versions: 1.4.1
> Reporter: Sumit Mohanty
> Assignee: Sumit Mohanty
> Fix For: 1.4.1
>
>
> On a 2node cluster (second host was Added via Add Hosts wizard, but the same
> was reproduced on a 3-node cluster with regular nodes' deployment)
> 1. On second host perform Decommission of DataNode.
> 2. The first host goes to state *Heartbeat lost* in UI (*host1-state.png*),
> doesn't seem to recover from it.
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