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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/06/22 02:25:00 UTC
[jira] [Updated] (ARROW-7012) [C++] Clarify ChunkedArray chunking
strategy and policy
[ https://issues.apache.org/jira/browse/ARROW-7012?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated ARROW-7012:
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Labels: pull-request-available (was: )
> [C++] Clarify ChunkedArray chunking strategy and policy
> -------------------------------------------------------
>
> Key: ARROW-7012
> URL: https://issues.apache.org/jira/browse/ARROW-7012
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Neal Richardson
> Assignee: Wes McKinney
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> See discussion on ARROW-6784 and [https://github.com/apache/arrow/pull/5686]. Among the questions:
> * Do Arrow users control the chunking, or is it an internal implementation detail they should not manage?
> * If users control it, how do they control it? E.g. if I call Take and use a ChunkedArray for the indices to take, does the chunking follow how the indices are chunked? Or should we attempt to preserve the mapping of data to their chunks in the input table/chunked array?
> * If it's an implementation detail, what is the optimal chunk size? And when is it worth reshaping (concatenating, slicing) input data to attain this optimal size?
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