这是V4版本，我把10.11.253.41的observer进程都杀掉了，但paxos_member_list里面怎么还有10.11.253.41啊 ？如下所示。这个paxos_member_list代表什么呢？
select paxos_member_list from gv$ob_log_stat where tenant_id=1102;
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| paxos_member_list |
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| 10.11.253.41:2882:1715911503169631,10.11.253.44:2882:1,10.11.253.45:2882:1715911311753797 |
| 10.11.253.41:2882:1715911408221473,10.11.253.44:2882:1,10.11.253.45:2882:1715911311985289 |
| 10.11.253.41:2882:1715911503169631,10.11.253.44:2882:1,10.11.253.45:2882:1715911311753797 |
| 10.11.253.41:2882:1715911408221473,10.11.253.44:2882:1,10.11.253.45:2882:1715911311985289 |
| 10.11.253.41:2882:1715911503169631,10.11.253.44:2882:1,10.11.253.45:2882:1715911311753797 |
| 10.11.253.41:2882:1715911408221473,10.11.253.44:2882:1,10.11.253.45:2882:1715911311985289 |
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