Yibo Cai created ARROW-13173:
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Summary: [C++] TestAsyncUtil.ReadaheadFailed asserts occasionally
Key: ARROW-13173
URL: https://issues.apache.org/jira/browse/ARROW-13173
Project: Apache Arrow
Issue Type: Bug
Components: C++
Affects Versions: 4.0.1, 4.0.0
Reporter: Yibo Cai
Observed one test case failure from Travis CI arm64 job.
https://travis-ci.com/github/apache/arrow/jobs/518630381#L2271
{{TestAsyncUtil.ReadaheadFailed}} asserted at
https://github.com/apache/arrow/blob/master/cpp/src/arrow/util/async_generator_test.cc#L1131
Looks _SleepABit()_ cannot guarantee that _finished_ will be set in time,
especially on busy CI hosts where many jobs share one machine.
cc [~westonpace]
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