WL#1709: Transaction profiles/optimizations
Affects: Server-7.1 — Status: Un-Assigned — Priority: Medium
Add different transaction profiles which will be handled differently by TC Example of ideas: * Run LQHKEYREQ in parallell instead in serial * Introduce transaction records in LQH and commit using this This should typically be configurable (per transaction) for the user since different algorithms have different benifits. Note: Running LQHKEYREQ in parallell will probably improve performance for disk operations quite a lot. Martin: Different timeouts and resource usage is probably even more urgent to add for individual transactions: Suggestion: add Ndb::startTransaction(NdbTransactionProfile &profile) where NdbTransactionProfile can contain: * TransactionDeadlockDetectionTimeout * TransactionInactiveTimeout * MaxNoOfOperations ... Sidenote: Ndb::startTransaction already takes two arguments (in 5.1) * Table object used for deciding which node to run the Transaction Coordinator on * Partition key These are more about controlling where the transaction executes and over what data than resource usage.
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