damccorm commented on code in PR #35915:
URL: https://github.com/apache/beam/pull/35915#discussion_r2291341265


##########
.github/workflows/beam_PreCommit_Python.yml:
##########
@@ -53,6 +53,23 @@ env:
   DEVELOCITY_ACCESS_KEY: ${{ secrets.DEVELOCITY_ACCESS_KEY }}
   GRADLE_ENTERPRISE_CACHE_USERNAME: ${{ secrets.GE_CACHE_USERNAME }}
   GRADLE_ENTERPRISE_CACHE_PASSWORD: ${{ secrets.GE_CACHE_PASSWORD }}
+  # Aggressive stability settings for flaky CI environment
+  PYTHONHASHSEED: "0"
+  OMP_NUM_THREADS: "1"
+  OPENBLAS_NUM_THREADS: "1"
+  # gRPC stability - more conservative for unstable networks
+  GRPC_ARG_KEEPALIVE_TIME_MS: "10000"
+  GRPC_ARG_KEEPALIVE_TIMEOUT_MS: "15000"
+  GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS: "1"
+  GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA: "0"
+  GRPC_ARG_MAX_RECONNECT_BACKOFF_MS: "30000"
+  # Beam-specific - very generous timeouts
+  BEAM_RETRY_MAX_ATTEMPTS: "5"
+  BEAM_RETRY_INITIAL_DELAY_MS: "5000"
+  BEAM_RETRY_MAX_DELAY_MS: "120000"

Review Comment:
   No problem - I was guessing that was the case; since we merged it we'll be 
able to see the impact in any PR workflow runs which is nice anyways



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