Adds PlusOneBackupSelector to RAMCloud

This gives us deterministic selection for the backupServerId, independent of the replicationId. We also add test_backup_server.py with Fault Tolerance tests for when a backup server goes down with PlusOneBackup enabled.
BeStateless · Oct 3, 2019 · 9353ebb · 9353ebb
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commit 9353ebb
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diff --git a/config/supervisord.conf b/config/supervisord.conf
@@ -17,7 +17,7 @@ stderr_logfile=/dev/fd/2
 stderr_logfile_maxbytes=0
 
 [program:ramcloud-server]
-command=/usr/local/bin/rc-server --externalStorage %(ENV_RC_EXTERNAL_STORAGE)s --clusterName %(ENV_RC_CLUSTER_NAME)s --local basic+udp:host=%(ENV_RC_IP)s,port=11112 --replicas 1
+command=/usr/local/bin/rc-server --externalStorage %(ENV_RC_EXTERNAL_STORAGE)s --clusterName %(ENV_RC_CLUSTER_NAME)s --local basic+udp:host=%(ENV_RC_IP)s,port=11112 --replicas 1 --usePlusOneBackup true
 autorestart=false
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0