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https://issues.apache.org/jira/browse/CASSANDRA-10045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14716404#comment-14716404
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Benedict commented on CASSANDRA-10045:
--------------------------------------
I added that in in order to debug over cassci, as I have spent more than a day
failing to get dtests to work locally :( I'll move that to a different branch
in future to avoid confusion.
I've traced the problem, to the {{noRowsIterator}} always returning
{{PartitionColumns.NONE}} even if it had a non-empty static row (the fix was
possibly in the version you just looked at, in fact). I've pushed an update
with the noise stripped out that is currently validating.
> Sparse/Dense decision should be made per-row, not per-file
> ----------------------------------------------------------
>
> Key: CASSANDRA-10045
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10045
> Project: Cassandra
> Issue Type: Sub-task
> Components: Core
> Reporter: Benedict
> Assignee: Benedict
> Priority: Minor
> Fix For: 3.0 beta 2
>
>
> Marking this as beta 1 in the hope I have time to rustle it up and get it
> reviewed beforehand. If I do not, I will let it slide, but our behaviour
> right now is not brilliant for workloads with a variance in density, and it
> should not be challenging to make a more targeted decision.
> We can also make use of CASSANDRA-9894 to make column encoding more efficient
> in many, even dense, cases.
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