Julian Hyde created CALCITE-915:
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Summary: Tests do not unset ThreadLocal values on exit
Key: CALCITE-915
URL: https://issues.apache.org/jira/browse/CALCITE-915
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Assignee: Julian Hyde
A few tests give different results if run as part of the suite than if run
individually. The reason is that previous tests that share the same ThreadLocal
instances had not set the value back on exit.
Add a class TryThreadLocal extends ThreadLocal with a 'push' method that
returns a Closeable memo that can be used in a try-with-resources block. The
memo remembers the previous value and assigned that when close is called.
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