test(ray): Fix flaky ray tests

tests/integrations/ray/test_ray.py

@@ -1,6 +1,7 @@
 import json
 import os
 import shutil
+import time
 import uuid
 
 import pytest
@@ -89,7 +90,7 @@ def read_error_from_log(job_id, ray_temp_dir):
     return None
 
 
-def read_spans_from_log(job_id, ray_temp_dir):
+def _parse_spans_from_log(job_id, ray_temp_dir):
     # Find the actual session directory that Ray created
     session_dirs = [d for d in os.listdir(ray_temp_dir) if d.startswith("session_")]
     if not session_dirs:
@@ -101,15 +102,17 @@ def read_spans_from_log(job_id, ray_temp_dir):
     if not os.path.exists(log_dir):
         raise FileNotFoundError(f"No logs directory found at {log_dir}")
 
-    log_file = [
+    log_files = [
         f
         for f in os.listdir(log_dir)
         if "worker" in f and job_id in f and f.endswith(".out")
-    ][0]
+    ]
+    if not log_files:
+        return []
 
     spans = []
     next_line_is_span_payload = False
-    with open(os.path.join(log_dir, log_file), "r") as file:
+    with open(os.path.join(log_dir, log_files[0]), "r") as file:
         for line in file:
             try:
                 payload = json.loads(line)
@@ -125,6 +128,19 @@ def read_spans_from_log(job_id, ray_temp_dir):
     return spans
 
 
+def read_spans_from_log(job_id, ray_temp_dir, min_spans=1, timeout=10):
+    deadline = time.monotonic() + timeout
+    spans = []
+    while True:
+        try:
+            spans = _parse_spans_from_log(job_id, ray_temp_dir)
+        except FileNotFoundError:
+            spans = []
+        if len(spans) >= min_spans or time.monotonic() >= deadline:
+            return spans
+        time.sleep(0.1)
+
+
 def example_task(span_streaming: bool):
     if span_streaming:
         with sentry_sdk.traces.start_span(
@@ -205,7 +221,7 @@ def test_tracing_in_ray_tasks(task_options, task, span_streaming):
                 ray.get(future)
 
             job_id = future.job_id().hex()
-            worker_spans = read_spans_from_log(job_id, ray_temp_dir)
+            worker_spans = read_spans_from_log(job_id, ray_temp_dir, min_spans=2)
         finally:
             if os.path.exists(ray_temp_dir):
                 shutil.rmtree(ray_temp_dir, ignore_errors=True)