HA: support separate SBN and 2NN?
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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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