[SPARK-52409][SDP] Only use PipelineRunEventBuffer in tests #51352
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@jonmio – I'm not sure how to add you as a reviewer, but heads up about this PR. |
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asl3
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### What changes were proposed in this pull request? This PR inverts the relationship between event callbacks and `PipelineRunEventBuffer`. Prior to this PR: - `PipelineUpdateContext` had a `PipelineRunEventBuffer`, that all events from the run were written to. - This `PipelineRunEventBuffer` contained an `eventCallback` val which the Connect backend used to forward events to the client - The only code that reads from the buffer is test code After this PR: - `PipelineUpdateContext` has an `eventCallback`, which is invoked on all events. - The test harness constructs a `PipelineRunEventBuffer` and passes its `addEvent` method to the `eventCallback` ### Why are the changes needed? With the prior code, there was a risk of memory pressure from the event buffer for long-running pipelines. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? Existing tests ### Was this patch authored or co-authored using generative AI tooling? No This patch had conflicts when merged, resolved by Committer: Sandy Ryza <sandy.ryza@databricks.com> Closes apache#51352 from sryza/pipeline-run-event-buffer. Lead-authored-by: Sandy Ryza <sandyryza@gmail.com> Co-authored-by: Sandy Ryza <sandy.ryza@databricks.com> Signed-off-by: Sandy Ryza <sandy.ryza@databricks.com>
ksbeyer
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Jul 14, 2025
### What changes were proposed in this pull request? This PR inverts the relationship between event callbacks and `PipelineRunEventBuffer`. Prior to this PR: - `PipelineUpdateContext` had a `PipelineRunEventBuffer`, that all events from the run were written to. - This `PipelineRunEventBuffer` contained an `eventCallback` val which the Connect backend used to forward events to the client - The only code that reads from the buffer is test code After this PR: - `PipelineUpdateContext` has an `eventCallback`, which is invoked on all events. - The test harness constructs a `PipelineRunEventBuffer` and passes its `addEvent` method to the `eventCallback` ### Why are the changes needed? With the prior code, there was a risk of memory pressure from the event buffer for long-running pipelines. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? Existing tests ### Was this patch authored or co-authored using generative AI tooling? No This patch had conflicts when merged, resolved by Committer: Sandy Ryza <sandy.ryza@databricks.com> Closes apache#51352 from sryza/pipeline-run-event-buffer. Lead-authored-by: Sandy Ryza <sandyryza@gmail.com> Co-authored-by: Sandy Ryza <sandy.ryza@databricks.com> Signed-off-by: Sandy Ryza <sandy.ryza@databricks.com>
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What changes were proposed in this pull request?
This PR inverts the relationship between event callbacks and
PipelineRunEventBuffer.Prior to this PR:
PipelineUpdateContexthad aPipelineRunEventBuffer, that all events from the run were written to.PipelineRunEventBuffercontained aneventCallbackval which the Connect backend used to forward events to the clientAfter this PR:
PipelineUpdateContexthas aneventCallback, which is invoked on all events.PipelineRunEventBufferand passes itsaddEventmethod to theeventCallbackWhy are the changes needed?
With the prior code, there was a risk of memory pressure from the event buffer for long-running pipelines.
Does this PR introduce any user-facing change?
No
How was this patch tested?
Existing tests
Was this patch authored or co-authored using generative AI tooling?
No