Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/669#discussion_r89849203
--- Diff:
exec/java-exec/src/test/java/org/apache/drill/TestDynamicUDFSupport.java ---
@@ -271,6 +271,75 @@ public void testDuplicatedFunctionsInLocalRegistry()
throws Exception {
}
@Test
+ public void testSuccessfulRegistrationAfterSeveralRetryAttempts() throws
Exception {
--- End diff --
The case in question would seem to occur when multiple registrations happen
concurrently. Do we have a test for that case? That is, do we try to run two
thread (two Drillbits?) and have them each attempt to register jars?
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