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From "Jason Lowe (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-3271) Lost nodes list and count not updated
Date Wed, 04 Jan 2012 16:05:39 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Lowe resolved MAPREDUCE-3271.
-----------------------------------

    Resolution: Duplicate

The patch being worked on in MAPREDUCE-3360 includes tracking lost nodes and decrementing
lost counts when they rejoin the cluster.
                
> Lost nodes list and count not updated
> -------------------------------------
>
>                 Key: MAPREDUCE-3271
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3271
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Ramya Sunil
>            Assignee: Jason Lowe
>            Priority: Critical
>             Fix For: 0.23.1
>
>
> When nodemanagers are lost, the "Lost Nodes" list and the count is not incremented. Either
we,
> 1. Fix the lost nodes list when a nodemanager is lost - The problem with tracking lost
nodes is, if the nodemanager joins back, there would be duplicate entries in active and lost
nodes with different port numbers.
> 2. Do not track lost nodemanagers

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