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https://issues.apache.org/jira/browse/HDFS-346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14069384#comment-14069384
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Allen Wittenauer commented on HDFS-346:
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Is this still valid? Actually, what would be the expected outcome of a node
seeing a different role on startup?
> Version file in name-node image directory should include "role" field.
> ----------------------------------------------------------------------
>
> Key: HDFS-346
> URL: https://issues.apache.org/jira/browse/HDFS-346
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Konstantin Shvachko
>
> It would be useful to have name-node role field in the {{VERSION}} file in
> name-node's image and edits directories so that one could see what type of
> node created the image. Role was introduced by HADOOP-4539
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