Chris Nauroth created HADOOP-9674:
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Summary: RPC#Server#start does not block until server is fully
initialized and listening
Key: HADOOP-9674
URL: https://issues.apache.org/jira/browse/HADOOP-9674
Project: Hadoop Common
Issue Type: Bug
Components: ipc
Affects Versions: 3.0.0, 2.2.0
Reporter: Chris Nauroth
Priority: Minor
This problem was originally mentioned in discussion on HADOOP-8980. When
calling {{RPC#Server#start}}, initialization of the server's internal
{{Listener}} and {{Reader}} threads happens in the background. This
initialization is not guaranteed to complete by the time the caller returns
from {{RPC#Server#start}}. This may be misleading to a caller that expects the
server has been fully initialized. This problem sometimes manifests as a test
failure in {{TestRPC#testStopsAllThreads}}. This test looks at the stack
frames of all running threads, expecting to find the {{Listener}} and
{{Reader}} threads, but sometimes it doesn't find them.
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