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https://issues.apache.org/jira/browse/IGNITE-19681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17840063#comment-17840063
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Pavel Tupitsyn commented on IGNITE-19681:
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Merged to main: 6dedb616b32f950da2020330a913ce7a8d292017
> Thin 3.0: Tx partition awareness
> --------------------------------
>
> Key: IGNITE-19681
> URL: https://issues.apache.org/jira/browse/IGNITE-19681
> Project: Ignite
> Issue Type: Improvement
> Components: thin client
> Affects Versions: 3.0.0-beta1
> Reporter: Pavel Tupitsyn
> Assignee: Pavel Tupitsyn
> Priority: Major
> Labels: ignite-3
> Fix For: 3.0.0-beta2
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Currently, client sends a separate *TX_BEGIN* request when the user invokes
> *IgniteTransactions.begin()* API:
> * Extra network request.
> * Chosen tx coordinator (server node that handles TX_BEGIN request) is random
> and in most cases won't be the primary node for enlisted keys.
> Solution:
> * On the client, do not send *TX_BEGIN* request when the user invokes
> *IgniteTransactions.begin()*. Instead, start the tx "on demand" when it is
> first used in some API.
> * Send two requests at once to the same node where the first enlisted
> operation goes (according to partition awareness, if applicable).
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