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From "Eli Collins (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2736) HA: support separate SBN and 2NN?
Date Fri, 30 Dec 2011 22:12:30 GMT
HA: support separate SBN and 2NN?
---------------------------------

                 Key: HDFS-2736
                 URL: https://issues.apache.org/jira/browse/HDFS-2736
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ha
    Affects Versions: HA branch (HDFS-1623)
            Reporter: Eli Collins


HDFS-2291 adds support for making the SBN capable of checkpointing, seems like we may also
need to support the 2NN checkpointing as well. Eg if we fail over to the SBN does it continue
to checkpoint? If not the log grows unbounded until the old primary comes back, if so does
that create performance problems since the primary wasn't previously checkpointing?

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