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stankiewicz merged 1 commit into from
Aug 5, 2026
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[OpenTelemetry] changes.md #39618

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3 changes: 3 additions & 0 deletions CHANGES.md
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Expand Up @@ -91,6 +91,9 @@
* (Python) Added `Watch`, a transform that polls a growing set of outputs for each input element, deduplicates outputs across poll rounds, and stops per a user-supplied termination condition
([#21521](https://github.com/apache/beam/issues/21521)).
* (Python) Added support to analyze core dumps created after python worker segmentation faults with `pystack` (or `gdb` if installed) using the `--profiler_agent=coredump` pipeline option. ([#39484](https://github.com/apache/beam/issues/39484)).
* (Java) Added per-element OpenTelemetry trace propagation across stages in the Dataflow Streaming Runner. Enable it with `--experiments=enable_otel_defaults,element_metadata_supported,disable_portable_worker`. Cloud Trace incurs additional cost. ([#33176](https://github.com/apache/beam/issues/33176))
* (Java) Added OpenTelemetry header propagation support for both reads and writes in KafkaIO and PubSubIO. ([#33176](https://github.com/apache/beam/issues/33176))
* (Java) Added OpenTelemetry tracing support for SpannerIO change streams ([#33176](https://github.com/apache/beam/issues/33176))

## Breaking Changes

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