John Gibson created LUCENE-5787:
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Summary: LuceneTestCase static leak checker interferes with Groovy
unit tests
Key: LUCENE-5787
URL: https://issues.apache.org/jira/browse/LUCENE-5787
Project: Lucene - Core
Issue Type: Bug
Environment: Maven 3.0.5
JUnit 4.11
Reporter: John Gibson
{{LuceneTestCase}}'s static memory leak checker can break Groovy subclasses.
Specifically, Groovy classes have a synthetic static member variable of type
{{org.codehaus.groovy.reflection.ClassInfo}}. If this variable grows too large
then LTC will fail the test. Because the variable is added by the Groovy
runtime instead of by the developer there is no way for the developer to clear
the field themselves.
Also note that the static leak checker does not ignore memory held by soft or
weak references. These should be ignored because the memory retained by such
fields will be reclaimed instead of triggering OutOfMemoryErrors.
Note that because LTC is a base class for Solr's testing support classes this
also affects {{SolrTestCaseJ4}} and {{AbstractSolrTestCase}}.
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