Mingliang Liu created HDFS-10666:
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Summary: Über-jira: Unit tests should not depend on
nondeterministic behavior using fixed sleep interval
Key: HDFS-10666
URL: https://issues.apache.org/jira/browse/HDFS-10666
Project: Hadoop HDFS
Issue Type: Bug
Components: test
Affects Versions: 3.0.0-alpha2
Reporter: Mingliang Liu
Assignee: Mingliang Liu
There have been dozens of intermittent failing unit tests because they depend
on fixed-interval sleep to wait for conditions to reach before assertion. This
umbrella jira is to replace these sleep statements with:
* {{GenericTestUtils.waitFor()}} to retry the conditions/assertions
* Trigger internal state change of {{MiniDFSCluster}}, e.g.
{{trigger\{BlockReports,HeartBeats,DeletionReports\}}}
* fails fast if specific exceptions are caught
* _ad-hoc fixes_ (TBD)
p.s. I don't know how closures in Java 8 comes into play but I'd like to see
any effort.
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