[ci] clean up dead code related to PR test selection

This is never used and not tested, so removing it for clarity.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/79363

Approved by: https://github.com/janeyx99

.jenkins/pytorch/common_utils.sh

@@ -82,17 +82,6 @@ function get_exit_code() {
   return $retcode
 }
 
-function get_pr_change_files() {
-  # The fetch may fail on Docker hosts, this fetch is necessary for GHA
-  # accepts PR_NUMBER and extract filename as arguments
-  set +e
-  tmp_file=$(mktemp)
-  wget -O "$tmp_file" "https://api.github.com/repos/pytorch/pytorch/pulls/$1/files"
-  # this regex extracts the filename list according to the GITHUB REST API result.
-  sed -n "s/.*\"filename\": \"\(.*\)\",/\1/p" "$tmp_file" | tee "$2"
-  set -e
-}
-
 function get_bazel() {
   if [[ $(uname) == "Darwin" ]]; then
     # download bazel version

test/run_test.py

@@ -321,10 +321,6 @@ or `conda install ninja`. Alternatively, disable said tests with
 
 PYTORCH_COLLECT_COVERAGE = bool(os.environ.get("PYTORCH_COLLECT_COVERAGE"))
 
-ENABLE_PR_HISTORY_REORDERING = bool(
-    os.environ.get("ENABLE_PR_HISTORY_REORDERING", "0") == "1"
-)
-
 JIT_EXECUTOR_TESTS = [
     "test_jit_profiling",
     "test_jit_legacy",
@@ -1033,9 +1029,7 @@ def main():
     #     sys.path.remove(test_directory)
 
     if IS_CI:
-        selected_tests = get_reordered_tests(
-            selected_tests, ENABLE_PR_HISTORY_REORDERING
-        )
+        selected_tests = get_reordered_tests(selected_tests)
         # downloading test cases configuration to local environment
         get_test_case_configs(dirpath=test_directory)
 

tools/stats/s3_stat_parser.py

@@ -241,16 +241,3 @@ def get_previous_reports_for_branch(
                 )
         commit_index += 1
     return reports
-
-
-def get_previous_reports_for_pr(
-    pr: str, ci_job_prefix: str = ""
-) -> List[Tuple[Report, str]]:
-    reports: List[Tuple[Report, str]] = []
-    logger.info(f"Grabbing reports from PR: {[pr]}")
-    summaries = get_test_stats_summaries_for_pr(pr=pr, job_prefix=ci_job_prefix)
-    for _, summary in summaries.items():
-        reports.extend(summary)
-    # sort by summary_timestamp
-    reports.sort(reverse=True, key=lambda s: s[1])
-    return reports

tools/testing/test_selections.py

@@ -5,7 +5,6 @@ import subprocess
 
 from tools.stats.s3_stat_parser import (
     get_previous_reports_for_branch,
-    get_previous_reports_for_pr,
     Report,
     Version2Report,
     HAVE_BOTO3,
@@ -158,29 +157,6 @@ def _query_past_job_times(test_times_file: Optional[str] = None) -> Dict[str, fl
     return job_times
 
 
-def _query_failure_test_module(reports: List[Tuple["Report", str]]) -> List[str]:
-    test_modules: List[str] = []
-    if len(reports) == 0 or len(reports[0]) == 0:
-        return test_modules
-    report = reports[0][0]
-    v_report = cast(Version2Report, report)
-    assert (
-        "format_version" in v_report.keys() and v_report.get("format_version") == 2
-    ), "S3 format currently handled is version 2 only"
-    files: Dict[str, Any] = v_report["files"]
-    for fname, file in files.items():
-        contains_failure = any(
-            any(
-                case["status"] == "errored" or case["status"] == "failed"
-                for _, case in suite["cases"].items()
-            )
-            for _, suite in file["suites"].items()
-        )
-        if contains_failure:
-            test_modules.append(fname)
-    return test_modules
-
-
 def _query_changed_test_files() -> List[str]:
     default_branch = f"origin/{os.environ.get('GIT_DEFAULT_BRANCH', 'master')}"
     cmd = ["git", "diff", "--name-only", default_branch, "HEAD"]
@@ -268,21 +244,9 @@ def get_specified_test_cases(filename: str, tests: List[str]) -> Dict[str, List[
         return specified_test_case_dict
 
 
-def get_reordered_tests(tests: List[str], is_reordering_by_pr: bool) -> List[str]:
+def get_reordered_tests(tests: List[str]) -> List[str]:
     """Get the reordered test filename list based on github PR history or git changed file."""
-    prioritized_tests = []
-    # Try using historic stats from PR.
-    if is_reordering_by_pr and HAVE_BOTO3:
-        pr_number = os.environ.get("PR_NUMBER", os.environ.get("CIRCLE_PR_NUMBER", ""))
-        if len(pr_number):
-            ci_job_prefix = _get_stripped_CI_job()
-            s3_reports: List[Tuple["Report", str]] = get_previous_reports_for_pr(
-                pr_number, ci_job_prefix
-            )
-            prioritized_tests = _query_failure_test_module(s3_reports)
-            print("Prioritized test from previous CI info.")
-
-    # Using file changes priority if no stats found from previous PR.
+    prioritized_tests: List[str] = []
     if len(prioritized_tests) == 0:
         try:
             changed_files = _query_changed_test_files()