sunchao opened a new pull request #33989:
URL: https://github.com/apache/spark/pull/33989
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### What changes were proposed in this pull request?
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This PR creates a new module `hive-shaded` which shades & relocates various
dependencies from Hive, including Guava. By this means it also upgrades the
Guava version from 14.0.1 to 30.1.1-jre.
### Why are the changes needed?
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Spark currently use `hive-exec-core` which leaks a lot of dependencies to
Spark, in particular Guava. As consequence, Spark is stuck with an ancient
Guava version 14.0.1 which also carries CVE issues described in
[SPARK-32502](https://issues.apache.org/jira/browse/SPARK-32502).
By creating a shaded module, Spark is able to de-couple from those
dependencies leaked by Hive and upgrade to newer versions of Guava. This also
allows us to upgrade other dependencies whenever necessary, without having to
wait for new Hive releases.
### Does this PR introduce _any_ user-facing change?
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No. For Spark users who programmatically depending on modules such as
`spark-hive`, the Hive dependencies will be replaced by the newly created
`hive-shaded` module.
### How was this patch tested?
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Existing tests.
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