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https://issues.apache.org/jira/browse/CASSANDRA-10572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14982714#comment-14982714
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Aleksey Yeschenko commented on CASSANDRA-10572:
-----------------------------------------------

Looks pretty straightforward/mechanical.

1. {{canRemoveRow}} does not need this check anymore:
{code}
if (column.type.isCollection())
    return false;
{code}

2. I'm very much not a fan of the names of the two methods (before and now). We 
still pretty much query the sstables in timestamp order in both cases - if only 
for the partition tombstone optimisation. We can just short-circuit it for 
{{ClusteringIndexNamesFilter}} and {{queryNeitherCountersNorCollections()}} in 
certain conditions.

Otherwise +1 so long as tests are passing.


> SinglePartitionNamesCommand::canRemoveRow omits counter cells it shouldn't
> --------------------------------------------------------------------------
>
>                 Key: CASSANDRA-10572
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10572
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Aleksey Yeschenko
>            Assignee: Sylvain Lebresne
>             Fix For: 3.0.0
>
>
> Like with collections, we can never be sure we've exhausted all the sstables 
> when reducing the filter. The sstables can contain legacy local shards that 
> need to be summed up. Unless we look into the content of the cells (?), or 
> until we get rid of the pre-2.1 values, we must include all the sstables in 
> the read (so long as clusterings overlap).
> This was not an issue with 2.1/2.2 as we've forced {{collectAllData}} always 
> on that path, but now we don't, and {{SinglePartitionNamesCommand}} should 
> handle the case.



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