* Use "sentinel failover" to force failover
** faster than kill redis instances
* set failover timeout to 1 min
** It makes sense with failover within localhost
* reduce instances : 1 Redis Server and 1 Sentinel
** port is not changed -> I'll changed later at end of refactoring
* Implements new sentinel commands (failover, monitor, remove, set)
* unit test included
** added 2 redis-server and 1 sentinel for failover test
* with some refactoring
** SentinelCommands : refactor to have interface
** HostAndPortUtil : same format to cluster setup
* increase sentinel instance to test JedisSentinelTest
** clear() called, slave promoted to master (slave of no one), New
Sentinel force to restore it (demote) -> slave is not reusable
* ipv6 applied at Redis 2.8 -> localhost / 127.0.0.1 / ::1 is now all same
* Makefile: sleep some time for launch each sentinel (workaround to sentinel's issue)
** issue to sentinel leader vote: https://github.com/antirez/redis/issues/1419
*** sentinel may confused to vote with sentinels launched approximately same time
* if RedisInputStream().read() at Protocol.processBulkReply() returns
-1, it runs with unexpected behavior
* fix: check and if return value is -1, it throws
JedisConnectionException with message "server has closed the connection"
** prevent unexpected behavior, specially ArrayIndexOutOfBoundException
*** calls System.arraycopy() with length = -1 (cause limit = -1) at
RedisInputStream.read()
add pubsub unit test scenario : client-output-buffer-limit exceed
* Redis warns event(disconnect client) to their log, and suddenly
disconnected connection
** http://redis.io/topics/clients -> Output buffers limits
** so test expects JedisConnectionException with proper message
* Now Pool.initPool() call closeInternalPool(), instead of destroy()
** calling destroy() in Pool.initPool() may have side effect, and JedisSentinelPool did
* modify unit test to test failover twice (needs +1 slave)
** modify configurations for additional slave
raising down-after-milliseconds of sentinel 1 to avoid taking the master down and up all the time.
change sleep to 10 seconds after doing a "salveof" to avoid false negatives.
This test will set up and get a master from a Redis master slave pair being
watched by 2 Sentinels. It pings the master, segfaults it, asks the pool for
another connection and makes sure it can ping it.
This commit also restores the pom.xml file's scm information back to
xetorthio and adds the default Sentinel port to the Procotol.
