[Backport 8.16] Allow retries for statuses other than 429 in streaming bulk (elastic#2702)

Co-authored-by: Miguel Grinberg <[email protected]>
Co-authored-by: Quentin Pradet <[email protected]>
Co-authored-by: Aaron Hoffer <[email protected]>

Author: 4 people

elasticsearch/_async/helpers.py

@@ -173,6 +173,7 @@ async def async_streaming_bulk(
     max_backoff: float = 600,
     yield_ok: bool = True,
     ignore_status: Union[int, Collection[int]] = (),
+    retry_on_status: Union[int, Collection[int]] = (429,),
     *args: Any,
     **kwargs: Any,
 ) -> AsyncIterable[Tuple[bool, Dict[str, Any]]]:
@@ -184,10 +185,11 @@ async def async_streaming_bulk(
     entire input is consumed and sent.
 
     If you specify ``max_retries`` it will also retry any documents that were
-    rejected with a ``429`` status code. To do this it will wait (**by calling
-    asyncio.sleep**) for ``initial_backoff`` seconds and then,
-    every subsequent rejection for the same chunk, for double the time every
-    time up to ``max_backoff`` seconds.
+    rejected with a ``429`` status code. Use ``retry_on_status`` to
+    configure which status codes will be retried. To do this it will wait
+    (**by calling asyncio.sleep which will block**) for ``initial_backoff`` seconds
+    and then, every subsequent rejection for the same chunk, for double the time
+    every time up to ``max_backoff`` seconds.
 
     :arg client: instance of :class:`~elasticsearch.AsyncElasticsearch` to use
     :arg actions: iterable or async iterable containing the actions to be executed
@@ -200,8 +202,11 @@ async def async_streaming_bulk(
     :arg expand_action_callback: callback executed on each action passed in,
         should return a tuple containing the action line and the data line
         (`None` if data line should be omitted).
+    :arg retry_on_status: HTTP status code that will trigger a retry.
+        (if `None` is specified only status 429 will retry).
     :arg max_retries: maximum number of times a document will be retried when
-        ``429`` is received, set to 0 (default) for no retries on ``429``
+        retry_on_status (defaulting to ``429``) is received,
+        set to 0 (default) for no retries
     :arg initial_backoff: number of seconds we should wait before the first
         retry. Any subsequent retries will be powers of ``initial_backoff *
         2**retry_number``
@@ -213,6 +218,9 @@ async def async_streaming_bulk(
     client = client.options()
     client._client_meta = (("h", "bp"),)
 
+    if isinstance(retry_on_status, int):
+        retry_on_status = (retry_on_status,)
+
     async def map_actions() -> AsyncIterable[_TYPE_BULK_ACTION_HEADER_AND_BODY]:
         async for item in aiter(actions):
             yield expand_action_callback(item)
@@ -264,11 +272,11 @@ async def map_actions() -> AsyncIterable[_TYPE_BULK_ACTION_HEADER_AND_BODY]:
                 ):
                     if not ok:
                         action, info = info.popitem()
-                        # retry if retries enabled, we get 429, and we are not
-                        # in the last attempt
+                        # retry if retries enabled, we are not in the last attempt,
+                        # and status in retry_on_status (defaulting to 429)
                         if (
                             max_retries
-                            and info["status"] == 429
+                            and info["status"] in retry_on_status
                             and (attempt + 1) <= max_retries
                         ):
                             # _process_bulk_chunk expects strings so we need to
@@ -281,8 +289,9 @@ async def map_actions() -> AsyncIterable[_TYPE_BULK_ACTION_HEADER_AND_BODY]:
                         yield ok, info
 
             except ApiError as e:
-                # suppress 429 errors since we will retry them
-                if attempt == max_retries or e.status_code != 429:
+                # suppress any status in retry_on_status (429 by default)
+                # since we will retry them
+                if attempt == max_retries or e.status_code not in retry_on_status:
                     raise
             else:
                 if not to_retry:

elasticsearch/helpers/actions.py

@@ -374,6 +374,7 @@ def streaming_bulk(
     max_backoff: float = 600,
     yield_ok: bool = True,
     ignore_status: Union[int, Collection[int]] = (),
+    retry_on_status: Union[int, Collection[int]] = (429,),
     span_name: str = "helpers.streaming_bulk",
     *args: Any,
     **kwargs: Any,
@@ -386,10 +387,11 @@ def streaming_bulk(
     entire input is consumed and sent.
 
     If you specify ``max_retries`` it will also retry any documents that were
-    rejected with a ``429`` status code. To do this it will wait (**by calling
-    time.sleep which will block**) for ``initial_backoff`` seconds and then,
-    every subsequent rejection for the same chunk, for double the time every
-    time up to ``max_backoff`` seconds.
+    rejected with a ``429`` status code. Use ``retry_on_status`` to
+    configure which status codes will be retried. To do this it will wait
+    (**by calling time.sleep which will block**) for ``initial_backoff`` seconds
+    and then, every subsequent rejection for the same chunk, for double the time
+    every time up to ``max_backoff`` seconds.
 
     :arg client: instance of :class:`~elasticsearch.Elasticsearch` to use
     :arg actions: iterable containing the actions to be executed
@@ -402,8 +404,11 @@ def streaming_bulk(
     :arg expand_action_callback: callback executed on each action passed in,
         should return a tuple containing the action line and the data line
         (`None` if data line should be omitted).
+    :arg retry_on_status: HTTP status code that will trigger a retry.
+        (if `None` is specified only status 429 will retry).
     :arg max_retries: maximum number of times a document will be retried when
-        ``429`` is received, set to 0 (default) for no retries on ``429``
+        retry_on_status (defaulting to ``429``) is received,
+        set to 0 (default) for no retries
     :arg initial_backoff: number of seconds we should wait before the first
         retry. Any subsequent retries will be powers of ``initial_backoff *
         2**retry_number``
@@ -415,6 +420,9 @@ def streaming_bulk(
         client = client.options()
         client._client_meta = (("h", "bp"),)
 
+        if isinstance(retry_on_status, int):
+            retry_on_status = (retry_on_status,)
+
         serializer = client.transport.serializers.get_serializer("application/json")
 
         bulk_data: List[
@@ -458,11 +466,11 @@ def streaming_bulk(
                     ):
                         if not ok:
                             action, info = info.popitem()
-                            # retry if retries enabled, we get 429, and we are not
-                            # in the last attempt
+                            # retry if retries enabled, we are not in the last attempt,
+                            # and status in retry_on_status (defaulting to 429)
                             if (
                                 max_retries
-                                and info["status"] == 429
+                                and info["status"] in retry_on_status
                                 and (attempt + 1) <= max_retries
                             ):
                                 # _process_bulk_chunk expects bytes so we need to
@@ -475,8 +483,9 @@ def streaming_bulk(
                             yield ok, info
 
                 except ApiError as e:
-                    # suppress 429 errors since we will retry them
-                    if attempt == max_retries or e.status_code != 429:
+                    # suppress any status in retry_on_status (429 by default)
+                    # since we will retry them
+                    if attempt == max_retries or e.status_code not in retry_on_status:
                         raise
                 else:
                     if not to_retry:

test_elasticsearch/test_async/test_server/test_helpers.py

@@ -293,6 +293,45 @@ async def streaming_bulk():
             await streaming_bulk()
         assert 4 == failing_client._called
 
+    async def test_connection_timeout_is_retried_with_retry_status_callback(
+        self, async_client
+    ):
+        failing_client = FailingBulkClient(
+            async_client,
+            fail_with=ApiError(
+                message="Connection timed out!",
+                body={},
+                meta=ApiResponseMeta(
+                    status=522, headers={}, http_version="1.1", duration=0, node=None
+                ),
+            ),
+        )
+        docs = [
+            {"_index": "i", "_id": 47, "f": "v"},
+            {"_index": "i", "_id": 45, "f": "v"},
+            {"_index": "i", "_id": 42, "f": "v"},
+        ]
+
+        results = [
+            x
+            async for x in helpers.async_streaming_bulk(
+                failing_client,
+                docs,
+                raise_on_exception=False,
+                raise_on_error=False,
+                chunk_size=1,
+                retry_on_status=522,
+                max_retries=1,
+                initial_backoff=0,
+            )
+        ]
+        assert 3 == len(results)
+        assert [True, True, True] == [r[0] for r in results]
+        await async_client.indices.refresh(index="i")
+        res = await async_client.search(index="i")
+        assert {"value": 3, "relation": "eq"} == res["hits"]["total"]
+        assert 4 == failing_client._called
+
 
 class TestBulk:
     async def test_bulk_works_with_single_item(self, async_client):

test_elasticsearch/test_server/test_helpers.py

@@ -288,6 +288,45 @@ def streaming_bulk():
     assert 4 == failing_client._called
 
 
+def test_connection_timeout_is_retried_with_retry_status_callback(sync_client):
+    failing_client = FailingBulkClient(
+        sync_client,
+        fail_with=ApiError(
+            message="Connection timed out!",
+            body={},
+            meta=ApiResponseMeta(
+                status=522, headers={}, http_version="1.1", duration=0, node=None
+            ),
+        ),
+    )
+    docs = [
+        {"_index": "i", "_id": 47, "f": "v"},
+        {"_index": "i", "_id": 45, "f": "v"},
+        {"_index": "i", "_id": 42, "f": "v"},
+    ]
+
+    results = list(
+        helpers.streaming_bulk(
+            failing_client,
+            docs,
+            index="i",
+            raise_on_exception=False,
+            raise_on_error=False,
+            chunk_size=1,
+            retry_on_status=522,
+            max_retries=1,
+            initial_backoff=0,
+        )
+    )
+    assert 3 == len(results)
+    print(results)
+    assert [True, True, True] == [r[0] for r in results]
+    sync_client.indices.refresh(index="i")
+    res = sync_client.search(index="i")
+    assert {"value": 3, "relation": "eq"} == res["hits"]["total"]
+    assert 4 == failing_client._called
+
+
 def test_bulk_works_with_single_item(sync_client):
     docs = [{"answer": 42, "_id": 1}]
     success, failed = helpers.bulk(sync_client, docs, index="test-index", refresh=True)