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fix(logs): optimize LogRecord memory by removing redundant context #4977

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c77ecd0
fix(logs): optimize LogRecord memory by removing redundant context
ajuijas Mar 13, 2026
2a3c956
Merge branch 'main' into issue-4957-logrecord-memory
lzchen Mar 13, 2026
1070ad9
fix(logs): reduce memory usage in BatchLogRecordProcessor (#4957)
ajuijas Mar 14, 2026
d20e6f2
Revert "fix(logs): optimize LogRecord memory by removing redundant co…
ajuijas Mar 14, 2026
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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -12,6 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## Unreleased

- `opentelemetry-sdk`: Optimize `LogRecord` memory in `BatchLogRecordProcessor` by clearing the `Context` object before buffering.
([#4957](https://github.com/open-telemetry/opentelemetry-python/issues/4957))
- `opentelemetry-sdk`: Add file configuration support with YAML/JSON loading, environment variable substitution, and schema validation against the vendored OTel config JSON schema
([#4898](https://github.com/open-telemetry/opentelemetry-python/pull/4898))
- Fix intermittent CI failures in `getting-started` and `tracecontext` jobs caused by GitHub git CDN SHA propagation lag by installing contrib packages from the already-checked-out local copy instead of a second git clone
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8 changes: 7 additions & 1 deletion opentelemetry-sdk/src/opentelemetry/sdk/_logs/_internal/export/__init__.py
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Expand Up @@ -14,6 +14,7 @@
from __future__ import annotations

import abc
import copy
import enum
import logging
import sys
Expand Down Expand Up @@ -286,8 +287,13 @@ def on_emit(self, log_record: ReadWriteLogRecord) -> None:
if log_record.resource is not None
else Resource.create({})
)
# Shallow copy the API log record to break the reference to the potentially large context
# while keeping the original context intact for other processors.
api_log_record = copy.copy(log_record.log_record)
api_log_record.context = None

readable_log_record = ReadableLogRecord(
log_record=log_record.log_record,
log_record=api_log_record,
resource=resource,
instrumentation_scope=log_record.instrumentation_scope,
limits=log_record.limits,
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