Chris Nauroth created HDFS-4633:
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Summary: TestDFSClientExcludedNodes fails sporadically if excluded
nodes cache expires too quickly
Key: HDFS-4633
URL: https://issues.apache.org/jira/browse/HDFS-4633
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs-client
Affects Versions: 3.0.0
Reporter: Chris Nauroth
Assignee: Chris Nauroth
{{TestDFSClientExcludedNodes}} simulates failures of individual data nodes in
the client's write pipeline and checks the client's ability to recover.
HDFS-4246 added support for periodic "forgiveness" by caching the list of known
bad data nodes with a periodic eviction. The test uses a 1 second cache
expiration. This sometimes causes failed nodes to be forgiven too fast and
violate the assumptions of the test.
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