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https://issues.apache.org/jira/browse/CASSANDRA-18398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17721889#comment-17721889
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Caleb Rackliffe commented on CASSANDRA-18398:
---------------------------------------------

I was looking at something else, and stumbled across the documentation for 
{{column_index_size}} in {{cassandra.yaml}}...

{noformat}
# Granularity of the collation index of rows within a partition.
# Increase if your rows are large, or if you have a very large
# number of rows per partition.  The competing goals are these:
#
# - a smaller granularity means more index entries are generated
#   and looking up rows withing the partition by collation column
#   is faster
# - but, Cassandra will keep the collation index in memory for hot
#   rows (as part of the key cache), so a larger granularity means
#   you can cache more hot rows
# Min unit: KiB
column_index_size: 64KiB
{noformat}

Given at least the key cache bits of this inline documentation are not relevant 
for the {{bti}} format, should we make some minor changes there?

> CEP-25: Trie-indexed SSTable format
> -----------------------------------
>
>                 Key: CASSANDRA-18398
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18398
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Local/SSTable
>            Reporter: Branimir Lambov
>            Assignee: Branimir Lambov
>            Priority: Normal
>             Fix For: 5.x
>
>          Time Spent: 37h
>  Remaining Estimate: 0h
>
> Implementation of Big Trie-Indexed (BTI) SSTable format, per 
> [CEP-25|https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-25%3A+Trie-indexed+SSTable+format].



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