restrict refresh ring to heartBeat #1015
Merged
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GetHosts uses queries on control connection. Any query error will
cause reconnection and refresh ring which calls GetHosts and thus
deadlocks.
Also it seems neater to have the ring refresh be done only by heartBeat.
Fixes #928
Verified that all tests that pass continue to pass with the fix.
Refer to issue #928 for details about this PR