Allow JVM metrics to be synchronous

Signed-off-by: Fabian Stäber <[email protected]>
open-telemetry · Mar 30, 2022 · 9be3f8e · 9be3f8e
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -66,6 +66,8 @@ release.
  ([#2290](https:/open-telemetry/opentelemetry-specification/pull/2290))
 - Add semantic conventions for [CloudEvents](https://cloudevents.io).
  ([#1978](https:/open-telemetry/opentelemetry-specification/pull/1978))
+- Allow JVM metrics to be synchronous
+ ([#2458](https:/open-telemetry/opentelemetry-specification/pull/2458)
 
 ### Compatibility
 

diff --git a/specification/metrics/semantic_conventions/runtime-environment-metrics.md b/specification/metrics/semantic_conventions/runtime-environment-metrics.md
@@ -57,16 +57,16 @@ consider, for example pthreads vs green thread implementations.
 
 All JVM metric attributes are required unless otherwise indicated.
 
-| Name | Description | Unit | Unit ([UCUM](README.md#instrument-units)) | Instrument Type  | Value Type | Attribute Key | Attribute Values |
-|--------------------------------------|-------------------------------------|-------|-------------------------------------------|----------------------------|------------|---------------|-----------------------|
-| process.runtime.jvm.memory.usage | Measure of memory used | Bytes | `By` | Asynchronous UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
-| | | | |  | | pool | Name of pool [1] |
-| process.runtime.jvm.memory.init | Measure of initial memory requested | Bytes | `By` | Asynchronous UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
-| | | | |  | | pool | Name of pool [1] |
-| process.runtime.jvm.memory.committed | Measure of memory committed | Bytes | `By` | Asynchronous UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
-| | | | |  | | pool | Name of pool [1] |
-| process.runtime.jvm.memory.max | Measure of max obtainable memory | Bytes | `By` | Asynchronous UpDownCounter | Int64 | type | `"heap"`, `"nonheap"` |
-| | | | |  | | pool | Name of pool [1] |
+| Name | Description | Unit | Unit ([UCUM](README.md#instrument-units)) | Instrument Type | Value Type | Attribute Key | Attribute Values |
+|--------------------------------------|-------------------------------------|-------|-------------------------------------------|-----------------|------------|---------------|-----------------------|
+| process.runtime.jvm.memory.usage | Measure of memory used | Bytes | `By` | UpDownCounter  | Int64 | type | `"heap"`, `"nonheap"` |
+| | | | | | | pool | Name of pool [1] |
+| process.runtime.jvm.memory.init | Measure of initial memory requested | Bytes | `By` | UpDownCounter  | Int64 | type | `"heap"`, `"nonheap"` |
+| | | | | | | pool | Name of pool [1] |
+| process.runtime.jvm.memory.committed | Measure of memory committed | Bytes | `By` | UpDownCounter  | Int64 | type | `"heap"`, `"nonheap"` |
+| | | | | | | pool | Name of pool [1] |
+| process.runtime.jvm.memory.max | Measure of max obtainable memory | Bytes | `By` | UpDownCounter  | Int64 | type | `"heap"`, `"nonheap"` |
+| | | | | | | pool | Name of pool [1] |
 
 **[1]**: Pool names are generally obtained
 via [MemoryPoolMXBean#getName()](https://docs.oracle.com/en/java/javase/11/docs/api/java.management/java/lang/management/MemoryPoolMXBean.html#getName())