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https://issues.apache.org/jira/browse/GORA-267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13727587#comment-13727587
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[email protected] commented on GORA-267:
---------------------------------------------
Implementation available for evaluation at
https://github.com/zirpins/gora/tree/GORA-267
The implementation is fully backward compatible. Simple key classes can still
be used and row scans are still possible with an order-preserving partitioner.
The current junit tests are all passed.
Furthermore, I have added an example and some unit tests to demonstrate the use
of composite primary keys for time series data.
> Cassandra composite primary key support
> ---------------------------------------
>
> Key: GORA-267
> URL: https://issues.apache.org/jira/browse/GORA-267
> Project: Apache Gora
> Issue Type: Improvement
> Components: gora-cassandra
> Reporter: [email protected]
> Labels: features
>
> The extension allows to define primary keys that are represented by avro
> classes. A mapping specifies how fields of the key class are mapped to the
> components of composite partition keys and composite column names. This gives
> users more control with respect to the distribution of data into Cassandra
> database structures. It is now possible to store data in wide rows with
> custom indexes that allow for fast range scans on a single node. Also there
> is no more need for an order-preserving partitioner that is likely to
> compromise data distribution in the Cassandra cluster.
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