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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-11474) cqlsh: COPY FROM should use regular inserts for single statement batches
Date Mon, 04 Apr 2016 01:38:25 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15223589#comment-15223589
] 

Stefania commented on CASSANDRA-11474:
--------------------------------------

We should also make sure that if a child process aborts during startup, then the error message
is displayed to the user. At the moment the only way to see exceptions thrown by worker processes
during startup is via {{--debug}}.

> 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
>             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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