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https://issues.apache.org/jira/browse/HBASE-8693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick Dimiduk updated HBASE-8693:
--------------------------------
Release Note:
This patch introduces an extensible data types API for HBase. It is inspired by
the following systems:
- PostgreSQL. Postgres has a user-extensible data type API, which has been
used to great effect by it's user community (ie, PostGIS). The desire is for
HBase to expose an equally extensible data type API. One aspect of the Postgres
data type is the ability to provide equivalence functions for index operations.
This appears to be of critical performance utility for its execution engine.
- Orderly. Orderly handles the issue of compound rowkeys by providing
convenience classes for handling these kinds of data types. This influence is
reflected in the Struct and Union family of classes.
- Phoenix. The PDataType enum used in Phoenix provides type hints, similar
Postgres's equivalence functions. These appear to be used during query
execution for numerical type promotion.
This patch introduces an interface, DataType, along with a number of data type
implementations based on the Bytes encoding. Also included are Struct and Union
types, demonstrating simple implementations of compound types. Helper classes
around the Struct implementation are also provided.
This patch does not address the type compatibility concerns expressed by
Phoenix's PDataType API (ie, isComparableTo, isCoercibleTo); these will be
addressed in HBASE-8863.
This patch also provides DataType implementations based on the OrderedBytes
encoding from HBASE-8201.
> DataType: provide extensible type API
> -------------------------------------
>
> Key: HBASE-8693
> URL: https://issues.apache.org/jira/browse/HBASE-8693
> Project: HBase
> Issue Type: Sub-task
> Components: Client
> Reporter: Nick Dimiduk
> Assignee: Nick Dimiduk
> Priority: Blocker
> Fix For: 0.98.0, 0.95.2
>
> Attachments: 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0001-HBASE-8693-Extensible-data-types-API.patch,
> 0002-HBASE-8693-example-Use-DataType-API-to-build-regionN.patch,
> KijiFormattedEntityId.java
>
>
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