GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/5334
[SQL] [WIP] Tries to skip row groups when reading footers
When `parquet.task.side.metadata` is set to true, skip row group
information while reading Parquet file footers. Also, this PR uses
`ParquetFileReader.readAllFootersInParallel` to read all footers in parallel.
- [ ] Micro benchmark
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark parquet-footers
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/5334.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 #5334
----
commit 6e47c5135bf9c0d345b77cc958b94e954ae8f030
Author: Cheng Lian <[email protected]>
Date: 2015-04-02T16:54:27Z
Tries to skip row groups when reading footers
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
