Jesse Yates created HDFS-6440:
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Summary: Support more than 2 NameNodes
Key: HDFS-6440
URL: https://issues.apache.org/jira/browse/HDFS-6440
Project: Hadoop HDFS
Issue Type: New Feature
Components: auto-failover, ha, namenode
Reporter: Jesse Yates
Most of the work is already done to support more than 2 NameNodes (one active,
one standby). This would be the last bit to support running multiple _standby_
NameNodes; one of the standbys should be available for fail-over.
Mostly, this is a matter of updating how we parse configurations, some
complexity around managing the checkpointing, and updating a whole lot of tests.
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