/**
* Test that's meant to be run with many iterations to expose a leak of SolrIndexSearcher when a
* core is closed due to a reload. Without the fix, this test fails with most iters=1000 runs.
*/
@Test
public void testReloadLeak() throws Exception {
final ExecutorService executor =
ExecutorUtil.newMDCAwareFixedThreadPool(1, new DefaultSolrThreadFactory("testReloadLeak"));
// Continuously open new searcher while core is not closed, and reload core to try to reproduce
// searcher leak.
// While in practice we never continuously open new searchers, this is trying to make up for the
// fact that opening
// a searcher in this empty core is very fast by opening new searchers continuously to increase
// the likelihood
// for race.
SolrCore core = h.getCore();
assertTrue("Refcount != 1", core.getOpenCount() == 1);
executor.execute(new NewSearcherRunnable(core));
// Since we called getCore() vs getCoreInc() and don't own a refCount, the container should
// decRef the core
// and close it when we call reload.
h.reload();
executor.shutdown();
executor.awaitTermination(1, TimeUnit.MINUTES);
// Check that all cores are closed and no searcher references are leaked.
assertTrue("SolrCore " + core + " is not closed", core.isClosed());
assertTrue(core.areAllSearcherReferencesEmpty());
}
