[IGNITE-1553] Optimize transaction prepare step when store is enabled

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: ignite-1.4
• Component/s: cache
• Labels: important
• Assignee: Unassigned
• Reporter: Alexey Goncharuk
• Created: 25/Sep/15 23:58
• Updated: 17/Jul/18 09:54

Description

Currently entries are enlisted in a database transaction after grid transaction is in PREPARED state. We can do this in parallel in the following fashion (pseudo-code):

fut = tx.prepareAsync();

db.write(tx.writes());

fut.get();

try {
    db.commit();
    
    tx.commit();
}
catch (Exception e) {
    tx.rollback();
}

If this approach is applied, we should be able to reduce latency for transactions when write-through is enabled.

 

store prepare works on primary nodes only