From: | Craig Ringer <craig(at)2ndquadrant(dot)com> |
---|---|
To: | Dave Cramer <pg(at)fastcrypt(dot)com> |
Cc: | Joe Hammerman <jhammerman(at)squarespace(dot)com>, pgsql-jdbc(at)lists(dot)postgresql(dot)org |
Subject: | Re: Logical WAL streaming & START_REPLICATION |
Date: | 2018-03-10 12:44:44 |
Message-ID: | CAMsr+YEM_QhxkhAS2g8LdPGjFDC9wLwk5BF-5t7-ZD6KQ6_6yA@mail.gmail.com |
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Lists: | pgsql-admin pgsql-jdbc |
On 10 March 2018 at 01:50, Dave Cramer <pg(at)fastcrypt(dot)com> wrote:
>
>
> On 9 March 2018 at 01:55, Craig Ringer <craig(at)2ndquadrant(dot)com> wrote:
>
>> On 9 March 2018 at 09:50, Craig Ringer <craig(at)2ndquadrant(dot)com> wrote:
>>
>>
>>> If your system will forget work on crash, it's not flushed, and you
>>> shouldn't report it flushed.
>>>
>>>
>> I haven't checked to see if PgJDBC actually exposes separate control of
>> the reported flush position though. If it doesn't, it really must in order
>> to make replication slots work properly.
>>
>
> Yes, we have separate control
>
> https://github.com/pgjdbc/pgjdbc/blob/1be8a9ebafbfbcff118385a61a350745addcaf3d/pgjdbc/src/main/java/org/postgresql/core/v3/replication/V3PGReplicationStream.java#L97
>
>
>
>
Great!
I hope that answers your question then Joe.
Dave, if you'd find it useful to add the explanation I wrote to the docs,
please feel free to crib as desired.
--
Craig Ringer http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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