Streaming Replication

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От ning chan
Тема Streaming Replication
Дата
Msg-id CAG0k5vAuhc-X2vNQkHjG8iw4qb_jPrN6z2YeAY=0PvJ00OU9pQ@mail.gmail.com
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Ответы Re: Streaming Replication
Список pgsql-general
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Hi,
I am new to PG Streaming Replication and I have a simple question hopefully someone can answer this easily.

I setup a Primary Hot Standby and they are connecting each other without problem.
Looking at the wal sender process, both servers pointing to the same location as follow:

Primary:
postgres  3018  0.0  0.1 203888  3024 ?        Ss   19:25   0:00 postgres: wal sender process postgres 10.89.94.31(43169) streaming 0/D913018

Standby:
postgres  3645  0.0  0.1 212556  3096 ?        Ss   19:25   0:00 postgres: wal receiver process   streaming 0/D913018

My question is when looking at the standby processes, I see startup process as follow:

postgres  3320  0.0  0.0 203048  2084 ?        Ss   18:11   0:00 postgres: startup process   recovering 00000001000000000000000D

What is that suppose to mean?
Is it really recovering some data from WAL record in the pg_xlog folder?

Thanks~
Ning


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