Igor Sapego created IGNITE-19684:
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Summary: С++: Thin 3.0: Combine tx.begin with first enlisted
operation
Key: IGNITE-19684
URL: https://issues.apache.org/jira/browse/IGNITE-19684
Project: Ignite
Issue Type: Improvement
Components: thin client
Affects Versions: 3.0.0-beta1
Reporter: Pavel Tupitsyn
Assignee: Pavel Tupitsyn
Fix For: 3.0.0-beta2
Currently, client sends a separate *TX_BEGIN* request when the user invokes
*ITransactions.BeginAsync* 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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