Hi, I'm trying to understand some of the details of the batch_size_warn_threshold_in_kb/batch_size_fail_threshold_in_kb settings.
Specifically, why are the thresholds measured in kb rather than the number of partitions affected? We have run into the limit in a situation where there is a batch with writes to two tables (because we wanted to ensure atomicity of the writes in the case of a failure). In some situations, the data inserted into one of these tables can be large enough to push the total batch size over the limit. In this specific case, we were able to rewrite things so that it could be split into separate statement executions with the application handling retry on failure so atomicity is not needed. It left us wondering, however, whether executing this as a batch was really problematic, or if the warning from Cassandra was spurious in this case. Is it really the total data size that matters, or just the number of affected partitions? Thanks, Tim -- Tim Moore *Senior Engineer, Lagom, Lightbend, Inc.* tim.mo...@lightbend.com +61 420 981 589 Skype: timothy.m.moore <https://www.lightbend.com/>
