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https://issues.apache.org/jira/browse/CASSANDRA-4418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-4418.
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Resolution: Invalid
Fix Version/s: (was: 1.1.2)
This use case isn't special enough to fork the storage engine. However, you may
be interested in
http://www.datastax.com/dev/blog/new-in-datastax-enterprise-2-1-improved-compaction-strategy-to-boost-analytical-processing-performance
> Add new file Column family Type
> -------------------------------
>
> Key: CASSANDRA-4418
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4418
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.1.2
> Environment: All
> Reporter: shawndu
>
> Now I think cassandra's main problems is the compaction.
> Our use case is:
> we insert many big column value data in cassandra. column value maybe more
> than 10k.for cassandra write is quiet fast. it will cause cassandra flush
> memtbale data into sstable.but these data may be deleted soon. so issues
> come: compaction.
> I don't know the root cause. but I know the result. in this case, compaction
> will make server become slow and also very high CPU and at a dangerous state.
> for we have other much important process running.
> I think we need a new File Column Family type. It is:
> a Column value is not a byte array but a file name. the real value is in the
> file.
> there are some benefits:
> 0 when column is inserted, just create the file.
> 1 when column value is update. just replace the file.
> 2 when column is deleted, just delete the file.
> 3 this will save much time when compaction.
> I don't know it is a good, but in my view, it is simple and can real fix the
> compaction problems.
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