GitHub user tdas opened a pull request:
https://github.com/apache/spark/pull/12879
[SPARK-15103][SQL] Refactored FileCatalog class to allow StreamFileCatalog
infer partitioning
## What changes were proposed in this pull request?
File Stream Sink writes the list of written files in a metadata log.
StreamFileCatalog reads the list of the files for processing. However
StreamFileCatalog does not infer partitioning like HDFSFileCatalog.
This PR enables that by refactoring HDFSFileCatalog to create an abstract
class PartitioningAwareFileCatalog, that has all the functionality to infer
partitions from a list of leaf files. HDFSFileCatalog extends
PartitioningAwareFileCatalog by providing a list of leaf files from recursive
directory scanning, StreamFileCatalog extends PartitioningAwareFileCatalog by
providing a list of leaf files from the metadata log.
## How was this patch tested?
(Please explain how this patch was tested. E.g. unit tests, integration
tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise,
remove this)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tdas/spark SPARK-15103
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12879.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 #12879
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