Configurable max backoff for GRPC exporter (#4333)

Author: awoimbee

CHANGELOG.md

@@ -87,6 +87,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#4353](https://github.com/open-telemetry/opentelemetry-python/pull/4353))
 - sdk: don't log or print warnings when the SDK has been disabled
   ([#4371](https://github.com/open-telemetry/opentelemetry-python/pull/4371))
+- Configurable max retry timeout for grpc exporter
+  ([#4333](https://github.com/open-telemetry/opentelemetry-python/pull/4333))
 - Fix span context manager typing by using ParamSpec from typing_extensions
   ([#4389](https://github.com/open-telemetry/opentelemetry-python/pull/4389))
 - Fix serialization of None values in logs body to match 1.31.0+ data model

exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/exporter.py

@@ -187,6 +187,8 @@ class OTLPExporterMixin(
         compression: gRPC compression method to use
     """
 
+    _MAX_RETRY_TIMEOUT = 64
+
     def __init__(
         self,
         endpoint: Optional[str] = None,
@@ -286,12 +288,13 @@ def _export(
         #     data.__class__.__name__,
         #     delay,
         # )
-        max_value = 64
         # expo returns a generator that yields delay values which grow
         # exponentially. Once delay is greater than max_value, the yielded
         # value will remain constant.
-        for delay in _create_exp_backoff_generator(max_value=max_value):
-            if delay == max_value or self._shutdown:
+        for delay in _create_exp_backoff_generator(
+            max_value=self._MAX_RETRY_TIMEOUT
+        ):
+            if delay == self._MAX_RETRY_TIMEOUT or self._shutdown:
                 return self._result.FAILURE
 
             with self._export_lock: