Release v1.18.0

v1.18.0 (2023-02-09)

Context

• No changes.

Traces

• Clarify guidance regarding excessive logging when attributes are dropped or truncated.
  (#3151)

Metrics

• No changes.

Logs

• Define BatchLogRecordProcessor default configuration values.
  (#3002)
• Clarify guidance regarding excessive logging when attributes are dropped or truncated.
  (#3151)

Resource

• No changes.

Semantic Conventions

• Add Cloud Spanner and Microsoft SQL Server Compact to db.system semantic conventions
  (#3105).
• Enable semantic convention tooling for metrics in spec
  (#3119)
• Rename google openshift platform attribute from google_cloud_openshift to gcp_openshift
  to match the existing cloud.provider prefix.
  (#3095)
• Changes http server span names from {http.route} to {http.method} {http.route}
  (when route is available), and from HTTP {http.method} to {http.method} (when
  route is not available).
  Changes http client span names from HTTP {http.method} to {http.method}.
  (#3165)
• Mark http.server.duration and http.client.duration metrics as required, and mark
  all other HTTP metrics as optional.
  #3158
• Add net.host.port to http.server.active_requests metrics attributes.
  #3158
• http.route SHOULD contain the "application root" if there is one.
  (#3164)

Compatibility

• Add condition with sum and count for Prometheus summaries
  (3059).
• Clarify prometheus unit conversions
  (#3066).
• Define conversion mapping from OTel Exponential Histograms to Prometheus Native
  Histograms.
  (#3079)
• Fix Prometheus histogram metric suffixes. Bucket series end in _bucket
  (#3018).

OpenTelemetry Protocol

• No changes.

SDK Configuration

• Add log-specific attribute limit configuration and clarify that general
  attribute limit configuration also apply to log records
  (#2861).

Telemetry Schemas

• No changes.

Common

• No changes.

New Contributors

• @mrblonde91 made their first contribution in #3105
• @khanhntd made their first contribution in #3059