GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/6090
[SPARK-7567] [SQL] Migrating Parquet data source to FSBasedRelation
This PR migrates Parquet data source to the newly introduced
`FSBasedRelation`. `FSBasedParquetRelation` is created to replace
`ParquetRelation2`. Major differences are:
1. Partition discovery code has been factored out to `FSBasedRelation`
1. `AppendingParquetOutputFormat` is not used now. Instead, an anonymous
subclass of `ParquetOutputFormat` is used to handle appending and writing
dynamic partitions
1. When scanning partitioned tables, `FSBasedParquetRelation.buildScan`
only builds an `RDD[Row]` for a single selected partition
1. `FSBasedParquetRelation` doesn't rely on Catalyst expressions for filter
push down, thus it doesn't extend `CatalystScan` anymore
After migrating `JSONRelation` (which extends `CatalystScan`), we can
remove `CatalystScan`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark parquet-migration
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6090.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 #6090
----
commit ec9950c591e5b981ce20fab96562db28488e0035
Author: Cheng Lian <[email protected]>
Date: 2015-05-10T19:21:51Z
Migrates Parquet data source to FSBasedRelation
commit f4482cad46f90a47c96e7fbc91710470cf709835
Author: Cheng Lian <[email protected]>
Date: 2015-05-11T12:41:09Z
Minor bug fix and more tests
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