Remove ordering reqirement for attributes. (#1212)

* Remove ordering for attributes. * Fill in CHANGELOG link
open-telemetry · Nov 10, 2020 · 6ae8ee7 · 6ae8ee7
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -70,6 +70,8 @@ New:
 
 Updates:
 
+- Remove ordering SHOULD-requirement for attributes
+  ([#1212](https://github.com/open-telemetry/opentelemetry-specification/pull/1212))
 - Make `process.pid` optional, split `process.command_args` from `command_line`
   ([#1137](https://github.com/open-telemetry/opentelemetry-specification/pull/1137))
 - Renamed `CorrelationContext` to `Baggage`:

diff --git a/specification/common/common.md b/specification/common/common.md
@@ -21,8 +21,6 @@ Attributes are a list of zero or more key-value pairs. An `Attribute` MUST have
     i.e. it MUST NOT contain values of different types. For protocols that do
     not natively support array values such values SHOULD be represented as JSON strings.
 
-Attributes SHOULD preserve the order in which they're set.
-
 Attribute values expressing a numerical value of zero, an empty string, or an
 empty array are considered meaningful and MUST be stored and passed on to
 processors / exporters.