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From "Jim Kellerman (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-994) IPC interfaces with different versions can cause problems
Date Tue, 11 Nov 2008 19:39:44 GMT
IPC interfaces with different versions can cause problems
---------------------------------------------------------

                 Key: HBASE-994
                 URL: https://issues.apache.org/jira/browse/HBASE-994
             Project: Hadoop HBase
          Issue Type: Bug
          Components: ipc
    Affects Versions: 0.18.1, 0.18.0, 0.2.1, 0.19.0
            Reporter: Jim Kellerman
            Assignee: Jim Kellerman
             Fix For: 0.19.0


This morning we ran into a situation in which some 0.2.x region servers started up and joined
a 0.18.1 cluster. 

This 'sort of' worked in that the hrs could communicate with the master, but clients could
not communicate with the 0.2 region servers because the api version changed (the master wouldn't
have liked it if it had deployed root or meta there).

Suggestion is that we have a single api version that gets bumped when any of the interfaces
changes.

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