Mingliang Liu created HDFS-10891:
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Summary: Über-jira: Test Improvement by adding missing test cases
for existing code
Key: HDFS-10891
URL: https://issues.apache.org/jira/browse/HDFS-10891
Project: Hadoop HDFS
Issue Type: Improvement
Components: test
Reporter: Mingliang Liu
Assignee: Mingliang Liu
We have covered some test cases in our nightly run and we'd like to backport
those test cases to the community code branch. This work includes the efforts
but not limited to:
# Add more *meaningful* test cases for existing code so it's hard to break it
as stability and compatibility should always be guarded if possible
# Refactor existing tests that share common code snippet (e.g. helper methods)
and/or logic (e.g. set up a MiniDFSCluster). One approach that is not popular
(which it should) is @Parameterized tests
# Reduce unnecessary overhead in unit tests (e.g. long interval sleep, build
MiniDFSCluster multiple times instead of reusing the same one)
This is not a long-term work to cover all future improvement in unit tests.
We'll be happy to resolve this after our internal test cases (will file
separate JIRAs for that) are mostly addressed/considered.
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