Prepare 1.64.0 (#8582)

Author: jack-berg

CHANGELOG.md

@@ -2,17 +2,95 @@
 
 ## Unreleased
 
-### SDK
+### API
 
-#### Exporters
+* Fix `W3CBaggagePropagator` to allow empty baggage values per W3C spec
+  ([#8468](https://github.com/open-telemetry/opentelemetry-java/pull/8468))
+* Fix baggage parsing for invalid percent-encoded members
+  ([#8480](https://github.com/open-telemetry/opentelemetry-java/pull/8480))
 
-* Prometheus: Fix serialization of array-valued scope and resource attributes to JSON strings
+#### Incubating
+
+* **BREAKING** Remove deprecated `InstrumentationConfigUtil.peerServiceMapping`
+  ([#8542](https://github.com/open-telemetry/opentelemetry-java/pull/8542))
+* Fix `EnvironmentGetter`/`EnvironmentSetter` to not enumerate or normalize carrier entries, and
+  normalize empty names consistently
+  ([#8474](https://github.com/open-telemetry/opentelemetry-java/pull/8474),
+  [#8481](https://github.com/open-telemetry/opentelemetry-java/pull/8481))
+
+### SDK
 
 #### Traces
 
 * Add `BatchSpanProcessor.create(SpanExporter)` convenience factory to mirror
   `SimpleSpanProcessor.create(SpanExporter)`
-  ([#8561](https://github.com/open-telemetry/opentelemetry-java/issues/8561))
+  ([#8564](https://github.com/open-telemetry/opentelemetry-java/pull/8564))
+* Fix `BatchSpanProcessor` benchmark aux counters (`exportedSpans`/`droppedSpans`) always
+  reporting zero
+  ([#8539](https://github.com/open-telemetry/opentelemetry-java/pull/8539))
+
+#### Metrics
+
+* Fix `PooledHashMap` dropping live entries when an entry is removed during `forEach`
+  ([#8499](https://github.com/open-telemetry/opentelemetry-java/pull/8499))
+* Safely initialize exemplar reservoir storage in `FixedSizeExemplarReservoir`
+  ([#8524](https://github.com/open-telemetry/opentelemetry-java/pull/8524))
+* Use `failExceptionally` in `PeriodicMetricReader` when the exporter is busy
+  ([#8525](https://github.com/open-telemetry/opentelemetry-java/pull/8525))
+* Only set `valuesRecorded` in `AggregatorHandle` when false
+  ([#8559](https://github.com/open-telemetry/opentelemetry-java/pull/8559))
+* Use `volatile` instead of atomics in `Double`/`LongLastValueAggregator`
+  ([#8560](https://github.com/open-telemetry/opentelemetry-java/pull/8560))
+* Randomize per-thread recording order in metric benchmarks to avoid concurrency hotspots
+  ([#8550](https://github.com/open-telemetry/opentelemetry-java/pull/8550))
+
+#### Logs
+
+* Fix `BatchLogRecordProcessor` worker thread being killed by non-runtime exceptions
+  ([#8529](https://github.com/open-telemetry/opentelemetry-java/pull/8529))
+
+#### Exporters
+
+* **BREAKING** Prometheus: Drop deprecated `PrometheusMetricReader` constructors
+  ([#8541](https://github.com/open-telemetry/opentelemetry-java/pull/8541))
+* OTLP: Reject host-less endpoints in `EndpointUtil.validateEndpoint`
+  ([#8489](https://github.com/open-telemetry/opentelemetry-java/pull/8489))
+* OTLP: Replace Jackson OTLP JSON serialization with a hand-rolled implementation
+  ([#8545](https://github.com/open-telemetry/opentelemetry-java/pull/8545))
+* OTLP Profiles: Fix `OtlpGrpcProfileExporter` `toString` class name
+  ([#8492](https://github.com/open-telemetry/opentelemetry-java/pull/8492))
+* Prometheus: Add translation strategy support
+  ([#8346](https://github.com/open-telemetry/opentelemetry-java/pull/8346))
+* Prometheus: Fix serialization of array-valued scope and resource attributes to JSON strings
+  ([#8497](https://github.com/open-telemetry/opentelemetry-java/pull/8497))
+
+#### Extensions
+
+* **BREAKING** Declarative config: Move experimental types to internal package
+  ([#8530](https://github.com/open-telemetry/opentelemetry-java/pull/8530))
+* Declarative config: Commit generated schema POJOs to git
+  ([#8408](https://github.com/open-telemetry/opentelemetry-java/pull/8408))
+* Declarative config: Update to `opentelemetry-configuration` v1.1.0
+  ([#8451](https://github.com/open-telemetry/opentelemetry-java/pull/8451))
+* Declarative config: Adjust POJO `toString`/`hashCode`/`equals` to match AutoValue semantics
+  ([#8526](https://github.com/open-telemetry/opentelemetry-java/pull/8526))
+* Declarative config: Add ref descriptions to generated model classes
+  ([#8540](https://github.com/open-telemetry/opentelemetry-java/pull/8540))
+* Declarative config: Emit consistent `@JsonProperty` annotations on generated models
+  ([#8563](https://github.com/open-telemetry/opentelemetry-java/pull/8563))
+* Declarative config: Remove duplicate resolver in `DeclarativeConfigPropertyUtil`
+  ([#8579](https://github.com/open-telemetry/opentelemetry-java/pull/8579))
+
+### Project tooling
+
+* Add configuration policy guidance
+  ([#8429](https://github.com/open-telemetry/opentelemetry-java/pull/8429))
+* Exclude certain GitHub Actions from running on forks
+  ([#8466](https://github.com/open-telemetry/opentelemetry-java/pull/8466))
+* Add guidance to prefer parameterized tests
+  ([#8469](https://github.com/open-telemetry/opentelemetry-java/pull/8469))
+* Make benchmark path configurable
+  ([#8557](https://github.com/open-telemetry/opentelemetry-java/pull/8557))
 
 ## Version 1.63.0 (2026-06-05)
 

sdk/trace/src/main/java/io/opentelemetry/sdk/trace/export/BatchSpanProcessor.java

@@ -66,7 +66,6 @@ public final class BatchSpanProcessor implements SpanProcessor {
    *
    * @param spanExporter the {@link SpanExporter} to which the Spans are pushed.
    * @return a new {@link BatchSpanProcessor}.
-   * @throws NullPointerException if the {@code spanExporter} is {@code null}.
    * @since 1.64.0
    */
   public static BatchSpanProcessor create(SpanExporter spanExporter) {