## What changes were proposed in this pull request?
This PR updates maven version from 3.5.4 to 3.6.0. The release note of the 3.6.0 is [here](https://maven.apache.org/docs/3.6.0/release-notes.html).
From [the release note of the 3.6.0](https://maven.apache.org/docs/3.6.0/release-notes.html), the followings are new features:
1. There had been issues related to the project discoverytime which has been increased in previous version which influenced some of our users.
1. The output in the reactor summary has been improved.
1. There was an issue related to the classpath ordering.
## How was this patch tested?
Existing tests
Closes#23177 from kiszk/SPARK-26212.
Authored-by: Kazuaki Ishizaki <ishizaki@jp.ibm.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
## What changes were proposed in this pull request?
This PR makes Spark's default Scala version as 2.12, and Scala 2.11 will be the alternative version. This implies that Scala 2.12 will be used by our CI builds including pull request builds.
We'll update the Jenkins to include a new compile-only jobs for Scala 2.11 to ensure the code can be still compiled with Scala 2.11.
## How was this patch tested?
existing tests
Closes#22967 from dbtsai/scala2.12.
Authored-by: DB Tsai <d_tsai@apple.com>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
## What changes were proposed in this pull request?
Since we didn't test Java 9 ~ 11 up to now in the community, fix the document to describe Java 8 only.
## How was this patch tested?
N/A (This is a document only change.)
Closes#22781 from dongjoon-hyun/SPARK-JDK-DOC.
Authored-by: Dongjoon Hyun <dongjoon@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
## What changes were proposed in this pull request?
Remove Kafka 0.8 integration
## How was this patch tested?
Existing tests, build scripts
Closes#22703 from srowen/SPARK-25705.
Authored-by: Sean Owen <sean.owen@databricks.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
## What changes were proposed in this pull request?
Many companies have their own enterprise GitHub to manage Spark code. To build and test in those repositories with Jenkins need to modify this script.
So I suggest to add some environment variables to allow regression testing in enterprise Jenkins instead of default Spark repository in GitHub.
## How was this patch tested?
Manually test.
Closes#22678 from LantaoJin/SPARK-25685.
Lead-authored-by: lajin <lajin@ebay.com>
Co-authored-by: LantaoJin <jinlantao@gmail.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
## What changes were proposed in this pull request?
Removes all vestiges of Flume in the build, for Spark 3.
I don't think this needs Jenkins config changes.
## How was this patch tested?
Existing tests.
Closes#22692 from srowen/SPARK-25598.
Authored-by: Sean Owen <sean.owen@databricks.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
## What changes were proposed in this pull request?
Remove Hadoop 2.6 references and make 2.7 the default.
Obviously, this is for master/3.0.0 only.
After this we can also get rid of the separate test jobs for Hadoop 2.6.
## How was this patch tested?
Existing tests
Closes#22615 from srowen/SPARK-25016.
Authored-by: Sean Owen <sean.owen@databricks.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
## What changes were proposed in this pull request?
How to reproduce permission issue:
```sh
# build spark
./dev/make-distribution.sh --name SPARK-25330 --tgz -Phadoop-2.7 -Phive -Phive-thriftserver -Pyarn
tar -zxf spark-2.4.0-SNAPSHOT-bin-SPARK-25330.tar && cd spark-2.4.0-SNAPSHOT-bin-SPARK-25330
export HADOOP_PROXY_USER=user_a
bin/spark-sql
export HADOOP_PROXY_USER=user_b
bin/spark-sql
```
```java
Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.security.AccessControlException: Permission denied: user=user_b, access=EXECUTE, inode="/tmp/hive-$%7Buser.name%7D/user_b/668748f2-f6c5-4325-a797-fd0a7ee7f4d4":user_b:hadoop:drwx------
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:319)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkTraverse(FSPermissionChecker.java:259)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:205)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:190)
```
The issue occurred in this commit: feb886f209. This pr revert Hadoop 2.7 to 2.7.3 to avoid this issue.
## How was this patch tested?
unit tests and manual tests.
Closes#22327 from wangyum/SPARK-25330.
Authored-by: Yuming Wang <yumwang@ebay.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
## What changes were proposed in this pull request?
Improve build for Scala 2.12. Current build for sbt fails on the subproject `repl`:
```
[info] Compiling 6 Scala sources to /Users/rendong/wdi/spark/repl/target/scala-2.12/classes...
[error] /Users/rendong/wdi/spark/repl/scala-2.11/src/main/scala/org/apache/spark/repl/SparkILoopInterpreter.scala:80: overriding lazy value importableSymbolsWithRenames in class ImportHandler of type List[(this.intp.global.Symbol, this.intp.global.Name)];
[error] lazy value importableSymbolsWithRenames needs `override' modifier
[error] lazy val importableSymbolsWithRenames: List[(Symbol, Name)] = {
[error] ^
[warn] /Users/rendong/wdi/spark/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala:53: variable addedClasspath in class ILoop is deprecated (since 2.11.0): use reset, replay or require to update class path
[warn] if (addedClasspath != "") {
[warn] ^
[warn] /Users/rendong/wdi/spark/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala:54: variable addedClasspath in class ILoop is deprecated (since 2.11.0): use reset, replay or require to update class path
[warn] settings.classpath append addedClasspath
[warn] ^
[warn] two warnings found
[error] one error found
[error] (repl/compile:compileIncremental) Compilation failed
[error] Total time: 93 s, completed 2018-9-3 10:07:26
```
## How was this patch tested?
```
./dev/change-scala-version.sh 2.12
## For Maven
./build/mvn -Pscala-2.12 [mvn commands]
## For SBT
sbt -Dscala.version=2.12.6
```
Closes#22310 from sadhen/SPARK-25298.
Authored-by: Darcy Shen <sadhen@zoho.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
## What changes were proposed in this pull request?
R tests require `testthat` v1.0.2. In the PR, I described how to install the version in the section http://spark.apache.org/docs/latest/building-spark.html#running-r-tests.
Closes#22272 from MaxGekk/r-testthat-doc.
Authored-by: Maxim Gekk <maxim.gekk@databricks.com>
Signed-off-by: hyukjinkwon <gurwls223@apache.org>
## What changes were proposed in this pull request?
Fix a few broken links and typos, and, nit, use HTTPS more consistently esp. on scripts and Apache links
## How was this patch tested?
Doc build
Closes#22172 from srowen/DocTypo.
Authored-by: Sean Owen <sean.owen@databricks.com>
Signed-off-by: hyukjinkwon <gurwls223@apache.org>
## What changes were proposed in this pull request?
Update Hadoop 2.7 to 2.7.7 to pull in bug and security fixes.
## How was this patch tested?
Existing tests.
Author: Sean Owen <srowen@gmail.com>
Closes#21987 from srowen/SPARK-25015.
## What changes were proposed in this pull request?
This update tells the reader how to build Spark with SBT such that pyspark-sql tests will succeed.
If you follow the current instructions for building Spark with SBT, pyspark/sql/udf.py fails with:
<pre>
AnalysisException: u'Can not load class test.org.apache.spark.sql.JavaStringLength, please make sure it is on the classpath;'
</pre>
## How was this patch tested?
I ran the doc build command (SKIP_API=1 jekyll build) and eyeballed the result.
Author: Bruce Robbins <bersprockets@gmail.com>
Closes#21628 from bersprockets/SPARK-23776_doc.
## What changes were proposed in this pull request?
Easy fix in the documentation.
## How was this patch tested?
N/A
Closes#20948
Author: Daniel Sakuma <dsakuma@gmail.com>
Closes#20928 from dsakuma/fix_typo_configuration_docs.
What changes were proposed in this pull request?
This PR contains documentation on the usage of Kubernetes scheduler in Spark 2.3, and a shell script to make it easier to build docker images required to use the integration. The changes detailed here are covered by https://github.com/apache/spark/pull/19717 and https://github.com/apache/spark/pull/19468 which have merged already.
How was this patch tested?
The script has been in use for releases on our fork. Rest is documentation.
cc rxin mateiz (shepherd)
k8s-big-data SIG members & contributors: foxish ash211 mccheah liyinan926 erikerlandson ssuchter varunkatta kimoonkim tnachen ifilonenko
reviewers: vanzin felixcheung jiangxb1987 mridulm
TODO:
- [x] Add dockerfiles directory to built distribution. (https://github.com/apache/spark/pull/20007)
- [x] Change references to docker to instead say "container" (https://github.com/apache/spark/pull/19995)
- [x] Update configuration table.
- [x] Modify spark.kubernetes.allocation.batch.delay to take time instead of int (#20032)
Author: foxish <ramanathana@google.com>
Closes#19946 from foxish/update-k8s-docs.
## What changes were proposed in this pull request?
Move flume behind a profile, take 2. See https://github.com/apache/spark/pull/19365 for most of the back-story.
This change should fix the problem by removing the examples module dependency and moving Flume examples to the module itself. It also adds deprecation messages, per a discussion on dev about deprecating for 2.3.0.
## How was this patch tested?
Existing tests, which still enable flume integration.
Author: Sean Owen <sowen@cloudera.com>
Closes#19412 from srowen/SPARK-22142.2.
## What changes were proposed in this pull request?
Add 'flume' profile to enable Flume-related integration modules
## How was this patch tested?
Existing tests; no functional change
Author: Sean Owen <sowen@cloudera.com>
Closes#19365 from srowen/SPARK-22142.
## What changes were proposed in this pull request?
Put Kafka 0.8 support behind a kafka-0-8 profile.
## How was this patch tested?
Existing tests, but, until PR builder and Jenkins configs are updated the effect here is to not build or test Kafka 0.8 support at all.
Author: Sean Owen <sowen@cloudera.com>
Closes#19134 from srowen/SPARK-21893.
## What changes were proposed in this pull request?
Recently, I found two unreachable links in the document and fixed them.
Because of small changes related to the document, I don't file this issue in JIRA but please suggest I should do it if you think it's needed.
## How was this patch tested?
Tested manually.
Author: Kousuke Saruta <sarutak@oss.nttdata.co.jp>
Closes#19195 from sarutak/fix-unreachable-link.
## What changes were proposed in this pull request?
- Remove Scala 2.10 build profiles and support
- Replace some 2.10 support in scripts with commented placeholders for 2.12 later
- Remove deprecated API calls from 2.10 support
- Remove usages of deprecated context bounds where possible
- Remove Scala 2.10 workarounds like ScalaReflectionLock
- Other minor Scala warning fixes
## How was this patch tested?
Existing tests
Author: Sean Owen <sowen@cloudera.com>
Closes#17150 from srowen/SPARK-19810.
## What changes were proposed in this pull request?
Update Running R Tests dependence packages to:
```bash
R -e "install.packages(c('knitr', 'rmarkdown', 'testthat', 'e1071', 'survival'), repos='http://cran.us.r-project.org')"
```
## How was this patch tested?
manual tests
Author: Yuming Wang <wgyumg@gmail.com>
Closes#18271 from wangyum/building-spark.
## What changes were proposed in this pull request?
Just added the Maven `test`goal.
## How was this patch tested?
No test needed, just a trivial documentation fix.
Author: Armin Braun <me@obrown.io>
Closes#17756 from original-brownbear/SPARK-20455.
# What changes were proposed in this pull request?
It seems there are several non-breaking spaces were inserted into several `.md`s and they look breaking rendering markdown files.
These are different. For example, this can be checked via `python` as below:
```python
>>> " "
'\xc2\xa0'
>>> " "
' '
```
_Note that it seems this PR description automatically replaces non-breaking spaces into normal spaces. Please open a `vi` and copy and paste it into `python` to verify this (do not copy the characters here)._
I checked the output below in Sapari and Chrome on Mac OS and, Internal Explorer on Windows 10.
**Before**
**After**
## How was this patch tested?
Manually checking.
These instances were found via
```
grep --include=*.scala --include=*.python --include=*.java --include=*.r --include=*.R --include=*.md --include=*.r -r -I " " .
```
in Mac OS.
It seems there are several instances more as below:
```
./docs/sql-programming-guide.md: │ ├── ...
./docs/sql-programming-guide.md: │ │
./docs/sql-programming-guide.md: │ ├── country=US
./docs/sql-programming-guide.md: │ │ └── data.parquet
./docs/sql-programming-guide.md: │ ├── country=CN
./docs/sql-programming-guide.md: │ │ └── data.parquet
./docs/sql-programming-guide.md: │ └── ...
./docs/sql-programming-guide.md: ├── ...
./docs/sql-programming-guide.md: │
./docs/sql-programming-guide.md: ├── country=US
./docs/sql-programming-guide.md: │ └── data.parquet
./docs/sql-programming-guide.md: ├── country=CN
./docs/sql-programming-guide.md: │ └── data.parquet
./docs/sql-programming-guide.md: └── ...
./sql/core/src/test/README.md:│ ├── *.avdl # Testing Avro IDL(s)
./sql/core/src/test/README.md:│ └── *.avpr # !! NO TOUCH !! Protocol files generated from Avro IDL(s)
./sql/core/src/test/README.md:│ ├── gen-avro.sh # Script used to generate Java code for Avro
./sql/core/src/test/README.md:│ └── gen-thrift.sh # Script used to generate Java code for Thrift
```
These seems generated via `tree` command which inserts non-breaking spaces. They do not look causing any problem for rendering within code blocks and I did not fix it to reduce the overhead to manually replace it when it is overwritten via `tree` command in the future.
Author: hyukjinkwon <gurwls223@gmail.com>
Closes#17517 from HyukjinKwon/non-breaking-space.
This commit moves developer-specific information from the release-
specific documentation in this repo to the developer tools page on
the main Spark website. This commit relies on this PR on the
Spark website: https://github.com/apache/spark-website/pull/33.
srowen
Author: Kay Ousterhout <kayousterhout@gmail.com>
Closes#17018 from kayousterhout/SPARK-19684.
- Move external/java8-tests tests into core, streaming, sql and remove
- Remove MaxPermGen and related options
- Fix some reflection / TODOs around Java 8+ methods
- Update doc references to 1.7/1.8 differences
- Remove Java 7/8 related build profiles
- Update some plugins for better Java 8 compatibility
- Fix a few Java-related warnings
For the future:
- Update Java 8 examples to fully use Java 8
- Update Java tests to use lambdas for simplicity
- Update Java internal implementations to use lambdas
## How was this patch tested?
Existing tests
Author: Sean Owen <sowen@cloudera.com>
Closes#16871 from srowen/SPARK-19493.
## What changes were proposed in this pull request?
- Remove support for Hadoop 2.5 and earlier
- Remove reflection and code constructs only needed to support multiple versions at once
- Update docs to reflect newer versions
- Remove older versions' builds and profiles.
## How was this patch tested?
Existing tests
Author: Sean Owen <sowen@cloudera.com>
Closes#16810 from srowen/SPARK-19464.
## What changes were proposed in this pull request?
add example with `--pip` and `--r` switch as it is actually done in create-release
## How was this patch tested?
Doc only
Author: Felix Cheung <felixcheung_m@hotmail.com>
Closes#16364 from felixcheung/buildguide.
## What changes were proposed in this pull request?
Updates links to the wiki to links to the new location of content on spark.apache.org.
## How was this patch tested?
Doc builds
Author: Sean Owen <sowen@cloudera.com>
Closes#15967 from srowen/SPARK-18073.1.
## What changes were proposed in this pull request?
This PR aims to provide a pip installable PySpark package. This does a bunch of work to copy the jars over and package them with the Python code (to prevent challenges from trying to use different versions of the Python code with different versions of the JAR). It does not currently publish to PyPI but that is the natural follow up (SPARK-18129).
Done:
- pip installable on conda [manual tested]
- setup.py installed on a non-pip managed system (RHEL) with YARN [manual tested]
- Automated testing of this (virtualenv)
- packaging and signing with release-build*
Possible follow up work:
- release-build update to publish to PyPI (SPARK-18128)
- figure out who owns the pyspark package name on prod PyPI (is it someone with in the project or should we ask PyPI or should we choose a different name to publish with like ApachePySpark?)
- Windows support and or testing ( SPARK-18136 )
- investigate details of wheel caching and see if we can avoid cleaning the wheel cache during our test
- consider how we want to number our dev/snapshot versions
Explicitly out of scope:
- Using pip installed PySpark to start a standalone cluster
- Using pip installed PySpark for non-Python Spark programs
*I've done some work to test release-build locally but as a non-committer I've just done local testing.
## How was this patch tested?
Automated testing with virtualenv, manual testing with conda, a system wide install, and YARN integration.
release-build changes tested locally as a non-committer (no testing of upload artifacts to Apache staging websites)
Author: Holden Karau <holden@us.ibm.com>
Author: Juliet Hougland <juliet@cloudera.com>
Author: Juliet Hougland <not@myemail.com>
Closes#15659 from holdenk/SPARK-1267-pip-install-pyspark.
## What changes were proposed in this pull request?
Document that Java 7, Python 2.6, Scala 2.10, Hadoop < 2.6 are deprecated in Spark 2.1.0. This does not actually implement any of the change in SPARK-18138, just peppers the documentation with notices about it.
## How was this patch tested?
Doc build
Author: Sean Owen <sowen@cloudera.com>
Closes#15733 from srowen/SPARK-18138.
## What changes were proposed in this pull request?
Update docs to not suggest to package Spark before running tests.
## How was this patch tested?
Not creating a JIRA since this pretty small. We haven't had the need to run mvn package before mvn test since 1.6 at least, or so I am told. So, updating the docs to not be misguiding.
Author: Mark Grover <mark@apache.org>
Closes#15572 from markgrover/doc_update.
Couple of mvn build examples use `-Dhadoop.version=VERSION` instead of actual version number
Author: Alexander Pivovarov <apivovarov@gmail.com>
Closes#15440 from apivovarov/patch-1.
## What changes were proposed in this pull request?
`FsHistoryProviderSuite` fails if `root` user runs it. The test case **SPARK-3697: ignore directories that cannot be read** depends on `setReadable(false, false)` to make test data files and expects the number of accessible files is 1. But, `root` can access all files, so it returns 2.
This PR adds the assumption explicitly on doc. `building-spark.md`.
## How was this patch tested?
This is a documentation change.
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes#15291 from dongjoon-hyun/SPARK-17412.
## What changes were proposed in this pull request?
Modified the documentation to clarify that `build/mvn` and `pom.xml` always add Java 7-specific parameters to `MAVEN_OPTS`, and that developers can safely ignore warnings about `-XX:MaxPermSize` that may result from compiling or running tests with Java 8.
## How was this patch tested?
Rebuilt HTML documentation, made sure that building-spark.html displays correctly in a browser.
Author: frreiss <frreiss@us.ibm.com>
Closes#15005 from frreiss/fred-17421a.
## What changes were proposed in this pull request?
Move Mesos code into a mvn module
## How was this patch tested?
unit tests
manually submitting a client mode and cluster mode job
spark/mesos integration test suite
Author: Michael Gummelt <mgummelt@mesosphere.io>
Closes#14637 from mgummelt/mesos-module.
## What changes were proposed in this pull request?
See JIRA for the motivation. The changes are almost entirely movement of text and edits to sections. Minor changes to text include:
- Copying in / merging text from the "Useful Developer Tools" wiki, in areas of
- Docker
- R
- Running one test
- standardizing on ./build/mvn not mvn, and likewise for ./build/sbt
- correcting some typos
- standardizing code block formatting
No text has been removed from this doc; text has been imported from the https://cwiki.apache.org/confluence/display/SPARK/Useful+Developer+Tools wiki
## How was this patch tested?
Jekyll doc build and inspection of resulting HTML in browser.
Author: Sean Owen <sowen@cloudera.com>
Closes#13124 from srowen/SPARK-15333.
## What changes were proposed in this pull request?
The current build documents don't specify that for PySpark tests we need to include Hive in the assembly otherwise the ORC tests fail.
## How was the this patch tested?
Manually built the docs locally. Ran the provided build command follow by the PySpark SQL tests.
Author: Holden Karau <holden@us.ibm.com>
Closes#11278 from holdenk/SPARK-13382-update-pyspark-testing-notes-r2.
## What changes were proposed in this pull request?
Create a maven profile for executing the docker integration tests using maven
Remove docker integration tests from main sbt build
Update documentation on how to run docker integration tests from sbt
## How was this patch tested?
Manual test of the docker integration tests as in :
mvn -Pdocker-integration-tests -pl :spark-docker-integration-tests_2.11 compile test
## Other comments
Note that the the DB2 Docker Tests are still disabled as there is a kernel version issue on the AMPLab Jenkins slaves and we would need to get them on the right level before enabling those tests. They do run ok locally with the updates from PR #12348
Author: Luciano Resende <lresende@apache.org>
Closes#12508 from lresende/docker.
## What changes were proposed in this pull request?
Removing references to assembly jar in documentation.
Adding an additional (previously undocumented) usage of spark-submit to run examples.
## How was this patch tested?
Ran spark-submit usage to ensure formatting was fine. Ran examples using SparkSubmit.
Author: Mark Grover <mark@apache.org>
Closes#12365 from markgrover/spark-14601.
## What changes were proposed in this pull request?
Change our build docs & shell scripts to that developers are aware of the change from "assembly" to "package"
## How was this patch tested?
Manually ran ./bin/spark-shell after ./build/sbt assembly and verified error message printed, ran new suggested build target and verified ./bin/spark-shell runs after this.
Author: Holden Karau <holden@pigscanfly.ca>
Author: Holden Karau <holden@us.ibm.com>
Closes#12197 from holdenk/SPARK-1424-spark-class-broken-fix-build-docs.
This patch fixes a compilation / build break in Spark's `java8-tests` and refactors their POM to simplify the build. See individual commit messages for more details.
Author: Josh Rosen <joshrosen@databricks.com>
Closes#12073 from JoshRosen/fix-java8-tests.
## What changes were proposed in this pull request?
This PR updates Scala and Hadoop versions in the build description and commands in `Building Spark` documents.
## How was this patch tested?
N/A
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes#11838 from dongjoon-hyun/fix_doc_building_spark.
## What changes were proposed in this pull request?
Today, Spark 1.6.1 and updated docs are release. Unfortunately, there is obsolete hive version information on docs: [Building Spark](http://spark.apache.org/docs/latest/building-spark.html#building-with-hive-and-jdbc-support). This PR fixes the following two lines.
```
-By default Spark will build with Hive 0.13.1 bindings.
+By default Spark will build with Hive 1.2.1 bindings.
-# Apache Hadoop 2.4.X with Hive 13 support
+# Apache Hadoop 2.4.X with Hive 1.2.1 support
```
`sql/README.md` file also describe
## How was this patch tested?
Manual.
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes#11639 from dongjoon-hyun/fix_doc_hive_version.
## What changes were proposed in this pull request?
Move many top-level files in dev/ or other appropriate directory. In particular, put `make-distribution.sh` in `dev` and update docs accordingly. Remove deprecated `sbt/sbt`.
I was (so far) unable to figure out how to move `tox.ini`. `scalastyle-config.xml` should be movable but edits to the project `.sbt` files didn't work; config file location is updatable for compile but not test scope.
## How was this patch tested?
`./dev/run-tests` to verify RAT and checkstyle work. Jenkins tests for the rest.
Author: Sean Owen <sowen@cloudera.com>
Closes#11522 from srowen/SPARK-13596.
Phase 1: update plugin versions, test dependencies, some example and third-party versions
Author: Sean Owen <sowen@cloudera.com>
Closes#11206 from srowen/SPARK-13324.
This patch changes Spark's build to make Scala 2.11 the default Scala version. To be clear, this does not mean that Spark will stop supporting Scala 2.10: users will still be able to compile Spark for Scala 2.10 by following the instructions on the "Building Spark" page; however, it does mean that Scala 2.11 will be the default Scala version used by our CI builds (including pull request builds).
The Scala 2.11 compiler is faster than 2.10, so I think we'll be able to look forward to a slight speedup in our CI builds (it looks like it's about 2X faster for the Maven compile-only builds, for instance).
After this patch is merged, I'll update Jenkins to add new compile-only jobs to ensure that Scala 2.10 compilation doesn't break.
Author: Josh Rosen <joshrosen@databricks.com>
Closes#10608 from JoshRosen/SPARK-6363.
This patch adds a Hadoop 2.7 build profile in order to let us automate tests against that version.
/cc rxin srowen
Author: Josh Rosen <joshrosen@databricks.com>
Closes#10775 from JoshRosen/add-hadoop-2.7-profile.
