Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

[Python] Support reading Parquet binary/string columns directly as DictionaryArray #19660

Closed
asfimport opened this issue Sep 25, 2018 · 2 comments

Comments

@asfimport
Copy link
Collaborator

asfimport commented Sep 25, 2018

Requires PARQUET-1324 and probably quite a bit of extra work

Properly implementing this will require dictionary normalization across row groups. When reading a new row group, a fast path that compares the current dictionary with the prior dictionary should be used. This also needs to handle the case where a column chunk "fell back" to PLAIN encoding mid-stream

Reporter: Wes McKinney / @wesm
Assignee: Wes McKinney / @wesm

Related issues:

PRs and other links:

Note: This issue was originally created as ARROW-3325. Please see the migration documentation for further details.

@asfimport
Copy link
Collaborator Author

Wes McKinney / @wesm:
I'd like to take some time with this rather than rushing it out for 0.13

@asfimport
Copy link
Collaborator Author

Wes McKinney / @wesm:
Issue resolved by pull request 4999
#4999

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
Development

No branches or pull requests

2 participants