Update default explicit bucket histogram boundaries (#2952)

Author: ocelotl

CHANGELOG.md

@@ -7,7 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://github.com/open-telemetry/opentelemetry-python/compare/v1.13.0-0.34b0...HEAD)
 
-## [1.13.0-0.34b0](https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.13.0-0.34b0) - 2022-09-26
+- Update explicit histogram bucket boundaries
+  ([#2947](https://github.com/open-telemetry/opentelemetry-python/pull/2947))
+
+## [1.13.0-0.34b0](https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.13.0) - 2022-09-26
 
 
 

opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/aggregation.py

@@ -227,7 +227,12 @@ def __init__(
             100.0,
             250.0,
             500.0,
+            750.0,
             1000.0,
+            2500.0,
+            5000.0,
+            7500.0,
+            10000.0,
         ),
         record_min_max: bool = True,
     ):
@@ -454,7 +459,12 @@ def __init__(
             100.0,
             250.0,
             500.0,
+            750.0,
             1000.0,
+            2500.0,
+            5000.0,
+            7500.0,
+            10000.0,
         ),
         record_min_max: bool = True,
     ) -> None:

opentelemetry-sdk/tests/metrics/test_aggregation.py

@@ -378,6 +378,28 @@ def test_collect(self):
             second_histogram.time_unix_nano, first_histogram.time_unix_nano
         )
 
+    def test_boundaries(self):
+        self.assertEqual(
+            _ExplicitBucketHistogramAggregation(Mock(), 0)._boundaries,
+            (
+                0.0,
+                5.0,
+                10.0,
+                25.0,
+                50.0,
+                75.0,
+                100.0,
+                250.0,
+                500.0,
+                750.0,
+                1000.0,
+                2500.0,
+                5000.0,
+                7500.0,
+                10000.0,
+            ),
+        )
+
 
 class TestAggregationFactory(TestCase):
     def test_sum_factory(self):