GitHub user fhueske opened a pull request:
https://github.com/apache/flink/pull/5043
[FLINK-2170] [connectors] Add OrcRowInputFormat and OrcTableSource.
## What is the purpose of the change
* Adds `OrcRowInputFormat` to read [ORC files](https://orc.apache.org) as
`DataSet<Row>`. The input format supports projection and filter push-down.
* Adds `OrcTableSource` to read [ORC files](https://orc.apache.org) as a
`Table` in a batch Table API or SQL query. The table source supports projection
and filter push-down.
## Brief change log
* Creates a new module `flink-connectors/flink-orc`
* Add `OrcRowInputFormat`
* Add `OrcTableSource`
* Add tests for input format and table source
* Adjust cost model of batch table scans to favor table sources with
pushed-down filters over those without pushed-down filters.
* Add static method to `RowTypeInfo` to project on fields.
* Improve translation of literals in `RexProgramExtractor`
## Verifying this change
* `OrcRowInputFormatTest` verifies
* Correct configuration of ORC readers.
* Results when reading ORC files
* Schema evolution support
* Computation of split boundaries
* `OrcTableSourceTest` verifies
* Correct implementation of TableSource interface methods
* Correct configuration of `OrcRowInputFormat` for test queries
(predicate and filter push-down)
* `OrcTableSourceITCase` runs end-to-end tests with SQL queries.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): **yes**, adds a new
Maven module `flink-orc` with a dependency on `org.apache.orc/orc-core`
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: **no**
- The serializers: **no**
- The runtime per-record code paths (performance sensitive): **no**
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: **no**
- The S3 file system connector: **no**
## Documentation
- Does this pull request introduce a new feature? **yes**
- If yes, how is the feature documented? **yes**, documentation for
`RowTableSource` was added.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/fhueske/flink table-ORC
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5043.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #5043
----
commit 2f524dfa0c4f8468691151925a622ba7fee55f0f
Author: uybhatti <uybha...@gmail.com>
Date: 2017-03-03T22:55:22Z
[FLINK-2170] [connectors] Add OrcRowInputFormat and OrcTableSource.
commit d80506e3785268f541457a69ade3118c634cf7e7
Author: Fabian Hueske <fhue...@apache.org>
Date: 2017-11-13T13:54:54Z
[FLINK-2170] [connectors] Add OrcRowInputFormat and OrcTableSource.
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