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https://issues.apache.org/jira/browse/CASSANDRA-18534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17773464#comment-17773464
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Stefan Miklosovic commented on CASSANDRA-18534:
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Please keep in mind that there is also CASSANDRA-18872.
Currently, crc_check_chance can be both specified in "compression" and as a
top-level table parameter. So you can now do this:
{code}
create table abc with compression = { 'crc_check_chance': 0.5} and
crc_check_chance = 0.6
{code}
crc_check_chance in compression is deprecated and we should remove it. If it is
not removed, then once this ticket is implemented, is that true that you could
do this?
{code}
create table abc with compression = { 'crc_check_chance': 0.5} and
crc_check_chance = 0.6 and and sstable_format = { "type" : "bti-fast",
"crc_check_chance": 0.7};
{code}
That is way too much :D It would be awesome if we removed the one in
compression at least.
> Make sstable format configurable per table
> ------------------------------------------
>
> Key: CASSANDRA-18534
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18534
> Project: Cassandra
> Issue Type: Improvement
> Components: Cluster/Schema, Local/SSTable
> Reporter: Branimir Lambov
> Assignee: Maxwell Guo
> Priority: Normal
> Fix For: 5.x
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Some SSTable format settings need to be configurable per table for better
> efficiency. This includes:
> - {{row_index_granularity}}
> - {{bloom_filter_fp_chance}}
> - {{crc_check_chance}}
> - {{min/max_index_interval}}
> Some of these are currently configurable using direct properties of tables.
> Having them as format properties makes better sense and should also support
> specifying useable combinations of settings, e.g.
> {code:java}
> CREATE TABLE ... WITH sstable_format = "bti-fast";
> CREATE TABLE ... WITH sstable_format = "bti-small";
> {code}
> where {{bti-fast}} and {{bti-small}} can be defined in {{cassandra.yaml}}
> e.g. as
> {code:java}
> sstable.format.options:
> - bti-fast:
> row_index_granularity: 1kiB
> bloom_filter_fp_chance: 0.01
> - bti-small:
> row_index_granularity: 32kiB
> bloom_filter_fp_chance: 0.1
> {code}
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