Aaron Fabbri created HADOOP-13351:
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Summary: TestDFSClientSocketSize buffer size tests are flaky
Key: HADOOP-13351
URL: https://issues.apache.org/jira/browse/HADOOP-13351
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 2.8.0, 3.0.0-alpha1
Reporter: Aaron Fabbri
{{TestDFSClientSocketSize}} has two tests that assert that a value that was set
via {{java.net.Socket#setSendBufferSize}} is equal to the value subsequently
returned by {{java.net.Socket#getSendBufferSize}}.
These tests are flaky when we run them. The occasionally fail.
This is expected behavior, actually, because {{Socket#setSendBufferSize()}}[is
only a
hint|https://docs.oracle.com/javase/7/docs/api/java/net/Socket.html#setSendBufferSize(int)].
(Similar to how the underlying libc {{setsockopt(SO_SNDBUF)}} works).
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