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https://issues.apache.org/jira/browse/CASSANDRA-21642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Miklosovic updated CASSANDRA-21642:
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Test and Documentation Plan: CI
Status: Patch Available (was: In Progress)
> Consider the introduction of flush_compression CQL table parameter
> ------------------------------------------------------------------
>
> Key: CASSANDRA-21642
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21642
> Project: Apache Cassandra
> Issue Type: New Feature
> Components: Feature/Compression
> Reporter: Stefan Miklosovic
> Assignee: Stefan Miklosovic
> Priority: Normal
> Fix For: 7.x
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> In CASSANDRA-15379 we have introduced {{flush_compression}} configuration
> parameter into cassandra.yaml by which an operator can say what compression
> should be used upon flushing.
> While this is indeed a valuable contribution, currently it is not possible to
> say that a particular table can be flushed with its table compressor while
> all the rest of tables can be flushed with fast / none. In other words, the
> current solution is global, applied to all tables, we can not be granular.
> Also, currently it is driven by a configuration property in cassandra.yaml.
> That means that if we ever change our minds about how this should be
> configured, we have to change that property and restart whole cluster which
> is understandably not ideal.
> The proposal is about the introduction of a CQL table parameter,
> {{flush_compression}} with values: auto, none, fast, table.
> {{auto}} means that it will fallback to cassandra.yaml values.
> Example:
> {code}
> CREATE TABLE ks.tb WITH flush_compression = 'table' and compression =
> {'class': 'ZstdCompressor' }
> {code}
> This means that table will be flushed with ZstdCompressor.
> {code}
> CREATE TABLE ks.tb WITH flush_compression = 'auto' and compression =
> {'class': 'ZstdCompressor' }
> {code}
> This means that table will be flushed with whatever is in cassandra.yaml
> {{auto}} is default hence copying the current behavior.
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