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https://issues.apache.org/jira/browse/ARROW-10967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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meng qingyou closed ARROW-10967.
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> [Rust] Make env vars ARROW_TEST_DATA and PARQUET_TEST_DATA optional
> -------------------------------------------------------------------
>
> Key: ARROW-10967
> URL: https://issues.apache.org/jira/browse/ARROW-10967
> Project: Apache Arrow
> Issue Type: Test
> Components: Rust
> Reporter: meng qingyou
> Assignee: meng qingyou
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.0.0
>
> Time Spent: 8h
> Remaining Estimate: 0h
>
> Current state:
> * Two env vars *ARROW_TEST_DATA* and *PARQUET_TEST_DATA* are required to be
> set, for running tests, benchmark.
> * The major usage likes this: let testdata =
> std::env::var("PARQUET_TEST_DATA").expect("PARQUET_TEST_DATA not defined");
> * There already exist some codes that tried to assembly the test data
> directories by appending relative dir to *current dir* of current running
> process.
> So it would be better if add several public utility functions for getting
> test data dir. Basic design is:
> If env is defined and the value points to existing dir, then we get it;
> Else try getting the data dir based on: current dir, default relative dir,
> etc.
>
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