VReplication: Where does the param of VStreamerClient from? #301

earayu · 2023-09-22T12:23:32Z

earayu
Sep 22, 2023
Maintainer

VStramer is a service that anyone can call, as long as they provide the correct params.
But where does these params come from?
But can I build right params so that I can call VStreamerClient?

Answered by gerayking

Sep 24, 2023

The params for Vstream is sourced from vplayer, as can be seen in the fetchAndApply function.
The params for VstreamRows is sourced from vcopier, as can be seen in the copyTable function.

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gerayking · 2023-09-24T14:33:45Z

gerayking
Sep 24, 2023
Collaborator

The params for Vstream is sourced from vplayer, as can be seen in the fetchAndApply function.
The params for VstreamRows is sourced from vcopier, as can be seen in the copyTable function.

4 replies

earayu Sep 25, 2023
Maintainer Author

fundamentally, startPos in VStream comes from system table vreplication.pos

earayu Sep 25, 2023
Maintainer Author

tabkePKs in VStream is nil

earayu Sep 25, 2023
Maintainer Author

filter in VStream is from system table vreplication.source.
And so dose for query in VStreamRows

earayu Sep 25, 2023
Maintainer Author

lastpk in VStreamRows is from system table copy_state.lastpk

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VReplication: Where does the param of VStreamerClient from? #301

earayu Sep 22, 2023 Maintainer

Replies: 1 comment · 4 replies

gerayking Sep 24, 2023 Collaborator

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earayu
Sep 22, 2023
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gerayking
Sep 24, 2023
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earayu Sep 25, 2023
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earayu Sep 25, 2023
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earayu Sep 25, 2023
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earayu Sep 25, 2023
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