Github user yhuai commented on the pull request:
https://github.com/apache/spark/pull/10502#issuecomment-189116088
@HyukjinKwon Thank you for working on it. We have been actively improving
the efficiency of code-gen and unsafe parquet reader. For the long term,
letting parquet to evaluate filters like `a=10` row by row is not as efficient
as using the code gen version of Spark filter. We do plan to let unsafe parquet
reader to evaluate very cheap predicates like `IsNotNull` and `IsNull` for
every row. However, before it happens, can we hold off the work on this PR?
---
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]
