DFSClient names in master and RS should be unique
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Key: HBASE-2975
URL: https://issues.apache.org/jira/browse/HBASE-2975
Project: HBase
Issue Type: Bug
Components: master, regionserver
Affects Versions: 0.90.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Priority: Critical
Attachments: hbase-2975.txt
In the post-newmaster trunk, there's some code which gives the regionserver and
masters fancy names based on hostname and port. This breaks log recovery,
though, if the master starts recovering a log (ie has an append lease on a log
file), then crashes and comes back on the same port. The NN doesn't see this as
a new client, since the client name is the same, so it thinks it still holds a
lease on the file. The new master, though, can't call append() because the NN
thinks it's appending, so it loops forever.
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