chore(similarity): Add logging for over 30 system frames

src/sentry/grouping/ingest/seer.py

@@ -210,6 +210,13 @@ def get_seer_similar_issues(
     should go in (if any), or None if no neighbor was near enough.
     """
     event_hash = event.get_primary_hash()
+    # Temporarily add project and event id to this for logging purposes
+    # TODO: Remove when grouping.similarity.over_threshold_system_only_frames is removed
+    grouping_info = get_grouping_info_from_variants(variants)
+    grouping_info["project_id"] = event.project.id  # type: ignore[assignment]
+    grouping_info["event_id"] = event.event_id  # type: ignore[assignment]
+    stacktrace_string = get_stacktrace_string(grouping_info)
+
     exception_type = get_path(event.data, "exception", "values", -1, "type")
 
     request_data: SimilarIssuesEmbeddingsRequest = {

src/sentry/seer/similarity/utils.py

@@ -179,18 +179,22 @@ def get_stacktrace_string(data: dict[str, Any]) -> str:
     html_frame_count = 0  # for a temporary metric
     stacktrace_str = ""
     found_non_snipped_context_line = False
+    is_frames_truncated = False
 
     metrics.distribution("seer.grouping.exceptions.length", len(exceptions))
 
     def _process_frames(frames: list[dict[str, Any]]) -> list[str]:
         nonlocal frame_count
         nonlocal html_frame_count
         nonlocal found_non_snipped_context_line
+        nonlocal is_frames_truncated
         frame_strings = []
 
         contributing_frames = [
             frame for frame in frames if frame.get("id") == "frame" and frame.get("contributes")
         ]
+        if len(contributing_frames) + frame_count > MAX_FRAME_COUNT:
+            is_frames_truncated = True
         contributing_frames = _discard_excess_frames(
             contributing_frames, MAX_FRAME_COUNT, frame_count
         )
@@ -287,6 +291,14 @@ def _process_frames(frames: list[dict[str, Any]]) -> list[str]:
         },
     )
 
+    if is_frames_truncated and not app_hash:
+        logger_extra = {
+            "project_id": data.get("project_id", ""),
+            "event_id": data.get("event_id", ""),
+            "hash": system_hash,
+        }
+        logger.info("grouping.similarity.over_threshold_system_only_frames", extra=logger_extra)
+
     return stacktrace_str.strip()
 
 

src/sentry/tasks/embeddings_grouping/utils.py

@@ -355,6 +355,10 @@ def get_events_from_nodestore(
         event._project_cache = project
         if event and event.data and event_content_has_stacktrace(event):
             grouping_info = get_grouping_info(None, project=project, event=event)
+            # Temporarily add project and event id to this for logging purposes
+            # TODO: Remove when grouping.similarity.over_threshold_system_only_frames is removed
+            grouping_info["project_id"] = project.id
+            grouping_info["event_id"] = event.event_id  # type: ignore[assignment]
             stacktrace_string = get_stacktrace_string(grouping_info)
             if stacktrace_string == "":
                 invalid_event_group_ids.append(group_id)

tests/sentry/grouping/ingest/test_seer.py

@@ -5,9 +5,11 @@
 from sentry import options
 from sentry.conf.server import SEER_SIMILARITY_MODEL_VERSION
 from sentry.eventstore.models import Event
+from sentry.grouping.grouping_info import get_grouping_info_from_variants
 from sentry.grouping.ingest.seer import get_seer_similar_issues, should_call_seer_for_grouping
 from sentry.models.grouphash import GroupHash
 from sentry.seer.similarity.types import SeerSimilarIssueData
+from sentry.seer.similarity.utils import MAX_FRAME_COUNT
 from sentry.testutils.cases import TestCase
 from sentry.testutils.helpers.eventprocessing import save_new_event
 from sentry.testutils.helpers.options import override_options
@@ -306,3 +308,47 @@ def test_returns_no_grouphash_and_empty_metadata_if_no_similar_group_found(self)
                 expected_metadata,
                 None,
             )
+
+    @patch("sentry.seer.similarity.utils.logger")
+    def test_too_many_only_system_frames(self, mock_logger: Mock) -> None:
+        type = "FailedToFetchError"
+        value = "Charlie didn't bring the ball back"
+        context_line = f"raise {type}('{value}')"
+        new_event = Event(
+            project_id=self.project.id,
+            event_id="22312012112120120908201304152013",
+            data={
+                "title": f"{type}('{value}')",
+                "exception": {
+                    "values": [
+                        {
+                            "type": type,
+                            "value": value,
+                            "stacktrace": {
+                                "frames": [
+                                    {
+                                        "function": f"play_fetch_{i}",
+                                        "filename": f"dogpark{i}.py",
+                                        "context_line": context_line,
+                                    }
+                                    for i in range(MAX_FRAME_COUNT + 1)
+                                ]
+                            },
+                        }
+                    ]
+                },
+                "platform": "python",
+            },
+        )
+        variants = new_event.get_grouping_variants()
+        get_seer_similar_issues(new_event, variants)
+
+        grouping_info = get_grouping_info_from_variants(variants)
+        mock_logger.info.assert_called_with(
+            "grouping.similarity.over_threshold_system_only_frames",
+            extra={
+                "project_id": self.project.id,
+                "event_id": new_event.event_id,
+                "hash": grouping_info["system"]["hash"],
+            },
+        )

tests/sentry/seer/similarity/test_utils.py

@@ -1,11 +1,13 @@
 import copy
 from collections.abc import Callable
 from typing import Any, Literal, cast
+from unittest.mock import patch
 from uuid import uuid1
 
 from sentry.eventstore.models import Event
 from sentry.seer.similarity.utils import (
     BASE64_ENCODED_PREFIXES,
+    MAX_FRAME_COUNT,
     SEER_ELIGIBLE_PLATFORMS,
     _is_snipped_context_line,
     event_content_is_seer_eligible,
@@ -710,7 +712,53 @@ def test_no_app_no_system(self):
         stacktrace_str = get_stacktrace_string(data)
         assert stacktrace_str == ""
 
-    def test_over_30_contributing_frames(self):
+    @patch("sentry.seer.similarity.utils.logger")
+    def test_too_many_system_frames_single_exception(self, mock_logger):
+        data_system = copy.deepcopy(self.BASE_APP_DATA)
+        data_system["system"] = data_system.pop("app")
+        data_system["system"]["component"]["values"][0]["values"][0][
+            "values"
+        ] += self.create_frames(MAX_FRAME_COUNT + 1, True)
+        data_system["project_id"] = self.project.id
+        data_system["event_id"] = "39485673049520"
+
+        get_stacktrace_string(data_system)
+
+        mock_logger.info.assert_called_with(
+            "grouping.similarity.over_threshold_system_only_frames",
+            extra={
+                "project_id": self.project.id,
+                "event_id": data_system["event_id"],
+                "hash": data_system["system"]["hash"],
+            },
+        )
+
+    @patch("sentry.seer.similarity.utils.logger")
+    def test_too_many_system_frames_chained_exception(self, mock_logger):
+        data_system = copy.deepcopy(self.CHAINED_APP_DATA)
+        data_system["system"] = data_system.pop("app")
+        data_system["project_id"] = self.project.id
+        data_system["event_id"] = "39485673049520"
+        # Split MAX_FRAME_COUNT across the two exceptions
+        data_system["system"]["component"]["values"][0]["values"][0]["values"][0][
+            "values"
+        ] += self.create_frames(MAX_FRAME_COUNT // 2, True)
+        data_system["system"]["component"]["values"][0]["values"][1]["values"][0][
+            "values"
+        ] += self.create_frames(MAX_FRAME_COUNT // 2, True)
+
+        get_stacktrace_string(data_system)
+
+        mock_logger.info.assert_called_with(
+            "grouping.similarity.over_threshold_system_only_frames",
+            extra={
+                "project_id": self.project.id,
+                "event_id": data_system["event_id"],
+                "hash": data_system["system"]["hash"],
+            },
+        )
+
+    def test_too_many_in_app_contributing_frames(self):
         """Check that when there are over 30 contributing frames, the last 30 are included."""
 
         data_frames = copy.deepcopy(self.BASE_APP_DATA)

tests/sentry/tasks/test_backfill_seer_grouping_records.py

@@ -25,6 +25,7 @@
 from sentry.models.grouphash import GroupHash
 from sentry.seer.similarity.grouping_records import CreateGroupingRecordData
 from sentry.seer.similarity.types import RawSeerSimilarIssueData
+from sentry.seer.similarity.utils import MAX_FRAME_COUNT
 from sentry.snuba.dataset import Dataset
 from sentry.snuba.referrer import Referrer
 from sentry.tasks.embeddings_grouping.backfill_seer_grouping_records_for_project import (
@@ -365,6 +366,69 @@ def test_lookup_group_data_stacktrace_bulk_no_stacktrace_exception(self):
         assert bulk_group_data_stacktraces["data"] == expected_group_data
         assert bulk_group_data_stacktraces["stacktrace_list"] == expected_stacktraces
 
+    @patch("sentry.seer.similarity.utils.logger")
+    def test_lookup_group_data_stacktrace_bulk_too_many_system_frames(self, mock_logger):
+        """
+        Test that if a group has over MAX_FRAME_COUNT only system frames, it is logged
+        and included in results
+        """
+        # Use 2 events
+        rows, events, hashes = self.bulk_rows[:2], self.bulk_events[:2], {}
+        group_ids = [row["group_id"] for row in rows]
+        for group_id in group_ids:
+            hashes.update({group_id: self.group_hashes[group_id]})
+        # Create one event where the stacktrace has over MAX_FRAME_COUNT system only frames
+        exception: Any = copy.deepcopy(EXCEPTION)
+        exception["values"][0]["stacktrace"]["frames"] += [
+            {
+                "function": f"divide_by_zero_{i}",
+                "module": "__main__",
+                "filename": "python_onboarding_{i}.py",
+                "abs_path": "/Users/user/python_onboarding/python_onboarding_{i}.py",
+                "lineno": i,
+                "in_app": True,
+            }
+            for i in range(MAX_FRAME_COUNT + 1)
+        ]
+        event = self.store_event(
+            data={
+                "platform": "python",
+                "exception": exception,
+                "title": "title",
+                "timestamp": before_now(seconds=10).isoformat(),
+            },
+            project_id=self.project.id,
+            assert_no_errors=False,
+        )
+        rows.append({"event_id": event.event_id, "group_id": event.group_id})
+        group_hash = GroupHash.objects.filter(group_id=event.group.id).first()
+        assert group_hash
+        hashes.update({event.group_id: group_hash.hash})
+        events.append(event)
+
+        bulk_group_data_stacktraces, _ = get_events_from_nodestore(self.project, rows, group_ids)
+        expected_group_data = [
+            CreateGroupingRecordData(
+                group_id=event.group.id,
+                hash=hashes[event.group.id],
+                project_id=self.project.id,
+                exception_type=get_path(event.data, "exception", "values", -1, "type"),
+            )
+            for event in events
+        ]
+
+        assert bulk_group_data_stacktraces["data"] == expected_group_data
+        assert len(bulk_group_data_stacktraces["stacktrace_list"]) == len(events)
+
+        mock_logger.info.assert_called_with(
+            "grouping.similarity.over_threshold_system_only_frames",
+            extra={
+                "project_id": self.project.id,
+                "event_id": event.event_id,
+                "hash": group_hash.hash,
+            },
+        )
+
     def test_lookup_group_data_stacktrace_bulk_with_fallback_success(self):
         """Test successful bulk lookup with fallback, where the fallback isn't used"""
         rows, events, hashes = (