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HDFS storage support via datafusion-objectstore-hdfs #1273

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HDFS storage support via datafusion-objectstore-hdfs #1273

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yjshen
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@yjshen yjshen commented Apr 10, 2023 •
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Description

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@github-actions github-actions bot added binding/rust Issues for the Rust crate documentation Improvements or additions to documentation rust labels Apr 10, 2023
@yjshen yjshen closed this Apr 10, 2023
@yjshen yjshen reopened this Apr 10, 2023
@iajoiner iajoiner mentioned this pull request Apr 10, 2023
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@yjshen yjshen changed the title Support reading from HDFS via datafusion-objectstore-hdfs HDFS storage support via datafusion-objectstore-hdfs Apr 10, 2023
@rtyler
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rtyler commented Apr 10, 2023

Interestingly this does not build on my machine which does not have Java installed:

error: failed to run custom build command for `fs-hdfs3 v0.1.11`

Caused by:
  process didn't exit successfully: `/usr/home/tyler/source/github/delta-io/delta-rs/target/debug/build/fs-hdfs3-60a8f4d683c18085/build-script-build` (exit status: 101)
  --- stderr
  thread 'main' panicked at 'JAVA_HOME shell environment must be set: environment variable not found', /home/tyler/.cargo/registry/src/github.com-1ecc6299db9ec823/fs-hdfs3-0.1.11/build.rs:146:13
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...

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yjshen commented Apr 10, 2023

Hi @rtyler, do you mean you cannot compile delta-rs with hdfs enabled because of a lack of JVM env?

I think this is expected since fs-hdfs3 requires a JVM env setting to build its hdfs lib and ffi https://github.com/datafusion-contrib/fs-hdfs/blob/hadoop-3.1.4/build.rs#L24-L28

wjones127
wjones127 requested changes Apr 11, 2023
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Thanks for submitting this PR. The changes look good, but before we merge could you enable the tests in CI? We'll need to enable the feature in:

delta-rs/.github/workflows/build.yml

Line 108 in c8371b3

cargo test -p deltalake --features integration_test,azure,s3,gcs,datafusion

And then also install the Java dependencies in that same job. Could you add that change to this PR?

rust/src/test_utils.rs
pub mod hdfs_cli {
use std::env;
use std::path::PathBuf;
// use super::set_env_if_not_set;
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Can we drop this?

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// use super::set_env_if_not_set;

@iajoiner iajoiner mentioned this pull request Apr 13, 2023
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@yjshen consented to me taking over this PR..so it has been replaced with #1279.

@yjshen yjshen closed this Apr 13, 2023
wjones127 pushed a commit that referenced this pull request Apr 14, 2023
@iajoiner @yjshen
HDFS storage support via datafusion-objectstore-hdfs (#1279)
4f9665d 
# Description
The description of the main changes of your pull request
This is basically the continuation of #1273 (really thanks @yjshen for
your contributions! The work is all his..I'm just the guy who tries to
get it merged!). I addressed the comments from @wjones127.
# Related Issue(s)
<!---
For example:

- closes #300
--->

# Documentation

<!---
Share links to useful documentation
--->

---------

Co-authored-by: Yijie Shen <henry.yijieshen@gmail.com>
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@wjones127 wjones127 wjones127 requested changes

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hdfs support
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