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Stefania commented on CASSANDRA-11474:
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Thanks for pointing this out, it wasn't clear to me. Until now I've assumed
{{batch_size_fail_threshold_in_kb}} was in place to protect against LOGGED
batches that are too large.
Batching was introduced only recently in COPY FROM (CASSANDRA-9302), so my
concern was to restore any functionality that might have been removed by it.
> cqlsh: COPY FROM should use regular inserts for single statement batches
> ------------------------------------------------------------------------
>
> Key: CASSANDRA-11474
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11474
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Reporter: Stefania
> Assignee: Stefania
> Priority: Minor
> Labels: lhf
> Fix For: 2.2.x, 3.0.x, 3.x
>
>
> I haven't reproduced it with a test yet but, from code inspection, if CQL
> rows are larger than {{batch_size_fail_threshold_in_kb}} and this parameter
> cannot be changed, then data import will fail.
> Users can control the batch size by setting MAXBATCHSIZE.
> If a batch contains a single statement, there is no need to use a batch and
> we should use normal inserts instead or, alternatively, we should skip the
> batch size check for unlogged batches with only one statement.
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