GitHub user fhueske opened a pull request:
https://github.com/apache/flink/pull/5345
[FLINK-8242] [table] Fix predicate push-down of OrcTableSource
## What is the purpose of the change
* Fix `ClassClassException` in `OrcTableSource` caused by hard cast to
`Serializable`
* Fix translation of Calcite literals with `NlString`
## Brief change log
* add check to `OrcTableSource` before casting to `Serializable`
* add logging to `OrcTableSource` for predicate push-down
* add fallback for Calcite literal translation for `NlString` literals
## Verifying this change
* adds a test to `OrcTableSourceTest.testApplyPredicate()`
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): **no**
- 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? **no**
- If yes, how is the feature documented? **n/a**
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/fhueske/flink orcPushDown
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5345.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 #5345
----
commit 796deed1fe6372ca2eafc1f3b08387b7f29d5841
Author: Fabian Hueske <fhueske@...>
Date: 2017-12-12T21:38:51Z
[FLINK-8242] [orc] Fix predicate translation if literal is not Serializable.
commit 07b8fe1eaf68e175c963048980809a4ce4605643
Author: Fabian Hueske <fhueske@...>
Date: 2018-01-23T21:10:00Z
[FLINK-8242] [table] RexProgramExtractor convert NlsString literal always
into String.
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