b6f46ca297
### What changes were proposed in this pull request? This: 1. switches Spark to use shaded Hadoop clients, namely hadoop-client-api and hadoop-client-runtime, for Hadoop 3.x. 2. upgrade built-in version for Hadoop 3.x to Hadoop 3.2.2 Note that for Hadoop 2.7, we'll still use the same modules such as hadoop-client. In order to still keep default Hadoop profile to be hadoop-3.2, this defines the following Maven properties: ``` hadoop-client-api.artifact hadoop-client-runtime.artifact hadoop-client-minicluster.artifact ``` which default to: ``` hadoop-client-api hadoop-client-runtime hadoop-client-minicluster ``` but all switch to `hadoop-client` when the Hadoop profile is hadoop-2.7. A side affect from this is we'll import the same dependency multiple times. For this I have to disable Maven enforcer `banDuplicatePomDependencyVersions`. Besides above, there are the following changes: - explicitly add a few dependencies which are imported via transitive dependencies from Hadoop jars, but are removed from the shaded client jars. - removed the use of `ProxyUriUtils.getPath` from `ApplicationMaster` which is a server-side/private API. - modified `IsolatedClientLoader` to exclude `hadoop-auth` jars when Hadoop version is 3.x. This change should only matter when we're not sharing Hadoop classes with Spark (which is _mostly_ used in tests). ### Why are the changes needed? Hadoop 3.2.2 is released with new features and bug fixes, so it's good for the Spark community to adopt it. However, latest Hadoop versions starting from Hadoop 3.2.1 have upgraded to use Guava 27+. In order to resolve Guava conflicts, this takes the approach by switching to shaded client jars provided by Hadoop. This also has the benefits of avoid pulling other 3rd party dependencies from Hadoop side so as to avoid more potential future conflicts. ### Does this PR introduce _any_ user-facing change? When people use Spark with `hadoop-provided` option, they should make sure class path contains `hadoop-client-api` and `hadoop-client-runtime` jars. In addition, they may need to make sure these jars appear before other Hadoop jars in the order. Otherwise, classes may be loaded from the other non-shaded Hadoop jars and cause potential conflicts. ### How was this patch tested? Relying on existing tests. Closes #30701 from sunchao/test-hadoop-3.2.2. Authored-by: Chao Sun <sunchao@apple.com> Signed-off-by: Dongjoon Hyun <dhyun@apple.com> |
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| .. | ||
| create-release | ||
| deps | ||
| sparktestsupport | ||
| tests | ||
| .gitignore | ||
| .rat-excludes | ||
| .scalafmt.conf | ||
| appveyor-guide.md | ||
| appveyor-install-dependencies.ps1 | ||
| change-scala-version.sh | ||
| check-license | ||
| checkstyle-suppressions.xml | ||
| checkstyle.xml | ||
| github_jira_sync.py | ||
| lint-java | ||
| lint-python | ||
| lint-r | ||
| lint-r.R | ||
| lint-scala | ||
| make-distribution.sh | ||
| merge_spark_pr.py | ||
| mima | ||
| pip-sanity-check.py | ||
| README.md | ||
| requirements.txt | ||
| run-pip-tests | ||
| run-tests | ||
| run-tests-jenkins | ||
| run-tests-jenkins.py | ||
| run-tests.py | ||
| sbt-checkstyle | ||
| scalafmt | ||
| scalastyle | ||
| test-dependencies.sh | ||
| tox.ini | ||
Spark Developer Scripts
This directory contains scripts useful to developers when packaging, testing, or committing to Spark.
Many of these scripts require Apache credentials to work correctly.