Neal Richardson created ARROW-7552:
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             Summary: [C++] TestSlowInputStream is flaky
                 Key: ARROW-7552
                 URL: https://issues.apache.org/jira/browse/ARROW-7552
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
            Reporter: Neal Richardson
             Fix For: 0.16.0


See 
https://github.com/apache/arrow/pull/6160/checks?check_run_id=384146741#step:5:1556
 for example

{code}
[ RUN      ] TestSlowInputStream.Basics
/arrow/cpp/src/arrow/io/memory_test.cc:308: Failure
Expected: (dt) < (latency * 3), actual: 4.96068 vs 1.8
[  FAILED  ] TestSlowInputStream.Basics (4961 ms)
[----------] 1 test from TestSlowInputStream (4961 ms total)
{code}

Tests that rely on timing are pretty tough to do on public CI. We should 
consider moving this somewhere that doesn't run on CI.



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