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NDB Cluster: MaxNoOfConcurrentTransactions
Posted by: Deepak Goel
Date: June 09, 2021 12:01PM


I spinned out a NDB Cluster (2 Data Node, 2 Server Nodes, 1 Management Node - all are 16cpu machines). I did a load test on it for 1000 users. It worked great. However when I increased the load to 2000 users, it gives me the error: "Out of connection objects: increase MaxNoOfConcurrentTransactions".

I added the following lines to the [NDBD Default] of the config.ini file:

After restarting the cluster, I run into the same error "Out of connection objects: increase MaxNoOfConcurrentTransactions" for 2000 users.

What could I be missing? Is the NDB cluster getting updated with my new changes? How do I verify?


P.S: I would eventually like to test for 100000 users

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NDB Cluster: MaxNoOfConcurrentTransactions
June 09, 2021 12:01PM

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