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[SPARK-30572][BUILD] Add a fallback Maven repository #636

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Jan 27, 2020
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@yifeih yifeih commented Jan 27, 2020

This PR aims to add a fallback Maven repository when a mirror to central fail.

We use Google Maven Central in GitHub Action as a mirror of central.
However, Google Maven Central sometimes doesn't have newly published artifacts
and there is no guarantee when we get the newly published artifacts.

By duplicating Maven Central with a new ID, we can add a fallback Maven repository
which is not mirrored by Google Maven Central.

No.

Manually testing with the new Twitter chill artifacts by switching chill.version from 0.9.3 to 0.9.5.

$ rm -rf ~/.m2/repository/com/twitter/chill*
$ mvn compile | grep chill
Downloading from google-maven-central: https://maven-central.storage-download.googleapis.com/repos/central/data/com/twitter/chill_2.12/0.9.5/chill_2.12-0.9.5.pom
Downloading from central_without_mirror: https://repo.maven.apache.org/maven2/com/twitter/chill_2.12/0.9.5/chill_2.12-0.9.5.pom
Downloaded from central_without_mirror: https://repo.maven.apache.org/maven2/com/twitter/chill_2.12/0.9.5/chill_2.12-0.9.5.pom (2.8 kB at 11 kB/s)

Closes apache#27281 from dongjoon-hyun/SPARK-30572.

Authored-by: Dongjoon Hyun dhyun@apple.com
Signed-off-by: Dongjoon Hyun dhyun@apple.com

Upstream SPARK-XXXXX ticket and PR link (if not applicable, explain)

Spark-30572: apache#27281

What changes were proposed in this pull request?

(Please fill in changes proposed in this fix)

How was this patch tested?

(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)

Please review http://spark.apache.org/contributing.html before opening a pull request.

This PR aims to add a fallback Maven repository when a mirror to `central` fail.

We use `Google Maven Central` in GitHub Action as a mirror of `central`.
However, `Google Maven Central` sometimes doesn't have newly published artifacts
and there is no guarantee when we get the newly published artifacts.

By duplicating `Maven Central` with a new ID, we can add a fallback Maven repository
which is not mirrored by `Google Maven Central`.

No.

Manually testing with the new `Twitter` chill artifacts by switching `chill.version` from `0.9.3` to `0.9.5`.

```
$ rm -rf ~/.m2/repository/com/twitter/chill*
$ mvn compile | grep chill
Downloading from google-maven-central: https://maven-central.storage-download.googleapis.com/repos/central/data/com/twitter/chill_2.12/0.9.5/chill_2.12-0.9.5.pom
Downloading from central_without_mirror: https://repo.maven.apache.org/maven2/com/twitter/chill_2.12/0.9.5/chill_2.12-0.9.5.pom
Downloaded from central_without_mirror: https://repo.maven.apache.org/maven2/com/twitter/chill_2.12/0.9.5/chill_2.12-0.9.5.pom (2.8 kB at 11 kB/s)
```

Closes apache#27281 from dongjoon-hyun/SPARK-30572.

Authored-by: Dongjoon Hyun <dhyun@apple.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
@yifeih yifeih merged commit cc41115 into master Jan 27, 2020
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2 participants