VT
So in most cases async replication is totally fine.
Size: a a a
2016 November 18
RK
So in most cases async replication is totally fine.
yes
RK
is it possible to track 'insert block id' and their statuses
RK
to answer clients async if they requests this status
VT
Yes it is
VT
There is 'replication queue'
RK
There is 'replication queue'
is it current or futur feature?
VT
Current
VT
Give me a sec
RK
do you use it in yandex?
VT
i'm in CERN currently and internet is really bad here =)
RK
do you use it in yandex?
i mean if any client app tracks YCH replication queue and what it performs if data is lost?
RK
who caches hot data before it will be replicated by YCH?
VT
we track it but not in terms of each chunk of data
VT
we monitor that this queue is not too large in terms of time
VT
And if replication lag is more than let's say 5 minutes than we investigate
RK
i see
RK
but it is not for money data, yep? :)
VT
Looks like that
VT
select table, new_part_name, type from system.replication_queue;