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HyukjinKwon a82aee0441 [SPARK-32435][PYTHON] Remove heapq3 port from Python 3 
### What changes were proposed in this pull request?

This PR removes the manual port of `heapq3.py` introduced from SPARK-3073. The main reason of this was to support Python 2.6 and 2.7 because Python 2's `heapq.merge()` doesn't not support `key` and `reverse`.

See
- https://docs.python.org/2/library/heapq.html#heapq.merge in Python 2
- https://docs.python.org/3.8/library/heapq.html#heapq.merge in Python 3

Since we dropped the Python 2 at SPARK-32138, we can remove this away.

### Why are the changes needed?

To remove unnecessary codes. Also, we can leverage bug fixes made in Python 3.x at `heapq`.

### Does this PR introduce _any_ user-facing change?

No, dev-only.

### How was this patch tested?

Existing tests should cover. I locally ran and verified:

```bash
./python/run-tests --python-executable=python3 --testname="pyspark.tests.test_shuffle"
./python/run-tests --python-executable=python3 --testname="pyspark.shuffle ExternalSorter"
./python/run-tests --python-executable=python3 --testname="pyspark.tests.test_rdd RDDTests.test_external_group_by_key"
```

Closes #29229 from HyukjinKwon/SPARK-32435.

Authored-by: HyukjinKwon <gurwls223@apache.org>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>
2020-07-27 20:10:13 +09:00
..
create-release [SPARK-32179][SPARK-32188][PYTHON][DOCS] Replace and redesign the documentation base 2020-07-27 17:49:21 +09:00
deps [SPARK-32441][BUILD][CORE] Update json4s to 3.7.0-M5 for Scala 2.13 2020-07-25 20:34:31 -07:00
sparktestsupport [SPARK-32036] Replace references to blacklist/whitelist language with more appropriate terminology, excluding the blacklisting feature 2020-07-15 11:40:55 -05:00
tests [MINOR] Fix typos in dev/* scripts. 2018-01-31 07:37:25 +09:00
.gitignore [SPARK-23174][BUILD][PYTHON][FOLLOWUP] Add pycodestyle*.py to .gitignore file. 2018-01-31 00:51:00 +09:00
.rat-excludes [SPARK-32435][PYTHON] Remove heapq3 port from Python 3 2020-07-27 20:10:13 +09:00
.scalafmt.conf [SPARK-26177] Config change followup to [] Automated formatting for Scala code 2018-12-03 10:03:51 -06:00
appveyor-guide.md [SPARK-26918][DOCS] All .md should have ASF license header 2019-03-30 19:49:45 -05:00
appveyor-install-dependencies.ps1 [SPARK-32231][R][INFRA] Use Hadoop 3.2 winutils in AppVeyor build 2020-07-09 17:18:39 +09:00
change-scala-version.sh [SPARK-30012][CORE][SQL] Change classes extending scala collection classes to work with 2.13 2019-12-03 08:59:43 -08:00
check-license [MINOR][BUILD] Upgrade apache-rat to 0.13 2019-04-01 16:44:42 +09:00
checkstyle-suppressions.xml [SPARK-29674][CORE] Update dropwizard metrics to 4.1.x for JDK 9+ 2019-11-03 15:13:06 -08:00
checkstyle.xml [MINOR] Fix google style guide address 2019-12-12 11:04:01 -06:00
github_jira_sync.py [SPARK-29802][BUILD] Use python3 in build scripts 2020-07-19 11:02:37 +09:00
lint-java [SPARK-23063][K8S] K8s changes for publishing scripts (and a couple of other misses) 2018-01-13 21:34:28 -08:00
lint-python [SPARK-32179][SPARK-32188][PYTHON][DOCS] Replace and redesign the documentation base 2020-07-27 17:49:21 +09:00
lint-r [SPARK-29932][R][TESTS] lint-r should do non-zero exit in case of errors 2019-11-17 10:09:46 -08:00
lint-r.R [MINOR][R] small tidying of sh scripts for R 2020-04-30 16:58:05 -07:00
lint-scala [SPARK-27158][BUILD] dev/mima and dev/scalastyle support dynamic profiles 2019-03-15 08:20:42 +09:00
make-distribution.sh [SPARK-31041][BUILD] Show Maven errors from within make-distribution.sh 2020-03-11 08:22:02 -05:00
merge_spark_pr.py [SPARK-29802][BUILD] Use python3 in build scripts 2020-07-19 11:02:37 +09:00
mima [SPARK-27158][BUILD] dev/mima and dev/scalastyle support dynamic profiles 2019-03-15 08:20:42 +09:00
pip-sanity-check.py [SPARK-29672][PYSPARK] update spark testing framework to use python3 2019-11-14 10:18:55 -08:00
README.md Merge pull request #565 from pwendell/dev-scripts. Closes #565. 2014-02-08 23:13:34 -08:00
requirements.txt [SPARK-32179][SPARK-32188][PYTHON][DOCS] Replace and redesign the documentation base 2020-07-27 17:49:21 +09:00
run-pip-tests [SPARK-32419][PYTHON][BUILD] Avoid using subshell for Conda env (de)activation in pip packaging test 2020-07-25 13:09:23 +09:00
run-tests [SPARK-29672][PYSPARK] update spark testing framework to use python3 2019-11-14 10:18:55 -08:00
run-tests-jenkins [SPARK-29672][PYSPARK] update spark testing framework to use python3 2019-11-14 10:18:55 -08:00
run-tests-jenkins.py [SPARK-32138] Drop Python 2.7, 3.4 and 3.5 2020-07-14 11:22:44 +09:00
run-tests.py Revert "[SPARK-32253][INFRA] Show errors only for the sbt tests of github actions" 2020-07-24 18:14:19 +08:00
sbt-checkstyle [SPARK-27158][BUILD] dev/mima and dev/scalastyle support dynamic profiles 2019-03-15 08:20:42 +09:00
scalafmt [SPARK-30570][BUILD] Update scalafmt plugin to 1.0.3 with onlyChangedFiles feature 2020-01-23 12:44:43 -08:00
scalastyle Revert "[SPARK-30534][INFRA] Use mvn in dev/scalastyle" 2020-01-21 18:23:03 +09:00
test-dependencies.sh [SPARK-32329][TESTS] Rename HADOOP2_MODULE_PROFILES to HADOOP_MODULE_PROFILES 2020-07-17 11:59:19 -05:00
tox.ini [SPARK-32435][PYTHON] Remove heapq3 port from Python 3 2020-07-27 20:10:13 +09:00

README.md

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