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From "Erik Krogen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-12004) Namenode UI continues to list DNs that have been removed from include and exclude
Date Tue, 20 Jun 2017 22:42:00 GMT
Erik Krogen created HDFS-12004:
----------------------------------

             Summary: Namenode UI continues to list DNs that have been removed from include
and exclude
                 Key: HDFS-12004
                 URL: https://issues.apache.org/jira/browse/HDFS-12004
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.3.0
            Reporter: Erik Krogen
            Priority: Minor


Initially in HDFS, after a DN was decommission and subsequently removed from the exclude file
(thus removing all references to it), it would still appear in the NN UI as a "dead" node
until the NN was restarted. In HDFS-1773, discussion about this was had, and it was decided
that the web UI should not show these nodes. However when HDFS-5334 went through and the NN
web UI was reimplemented client-side, the behavior reverted back to pre-HDFS-1773, and dead+decommissioned
nodes once again showed in the dead list. This can be operationally confusing for the same
reasons as discussed in HDFS-1773.

I would like to open this discussion to determine if the regression was intentional or if
we should carry forward the logic implemented HDFS-1773 into the new UI.



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