uranusjr commented on code in PR #70671:
URL: https://github.com/apache/airflow/pull/70671#discussion_r4410310287
##########
airflow-core/src/airflow/utils/log/file_task_handler.py:
##########
@@ -647,21 +645,22 @@ def _read(
TaskInstanceState.DEFERRED,
)
- with LogStreamAccumulator(out_stream, HEAP_DUMP_SIZE) as
stream_accumulator:
- log_pos = stream_accumulator.total_lines
- out_stream = stream_accumulator.stream
-
- # skip log stream until the last position
- if metadata and "log_pos" in metadata:
- out_stream = islice(out_stream, metadata["log_pos"], None)
- else:
- # first time reading log, add messages before interleaved log
stream
- out_stream = chain(header, out_stream)
+ out_metadata: LogMetadata = {"end_of_log": end_of_log}
+ if not end_of_log:
+ # Only an unfinished read needs log_pos for the continuation
token, and counting
+ # lines drains the stream eagerly, so finished reads stream
straight through.
Review Comment:
```suggestion
# Counting lines for log_pos drains the stream; skip when no
token is needed.
```
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