Hello,
GAE Java SDK: 1.9.36
The following test shows that LocalServiceTestHelper is creating a new thread
on each setUp which is not closed on tearDown which leads to memory leak.
@Test
public void happyPath() {
final LocalServiceTestHelper helper = new LocalServiceTestHelper(
new LocalSearchServiceTestConfig(),
new LocalDatastoreServiceTestConfig().setApplyAllHighRepJobPolicy()
);
for (int i = 0; i < 3000000;i++) {
helper.setUp();
helper.tearDown();
}
}
The following snippet is crashing with:
java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:714)
at
java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:949)
at
java.util.concurrent.ThreadPoolExecutor.ensurePrestart(ThreadPoolExecutor.java:1590)
at
java.util.concurrent.ScheduledThreadPoolExecutor.delayedExecute(ScheduledThreadPoolExecutor.java:333)
at
java.util.concurrent.ScheduledThreadPoolExecutor.scheduleWithFixedDelay(ScheduledThreadPoolExecutor.java:594)
at
com.google.appengine.api.datastore.dev.LocalDatastoreService.startInternal(LocalDatastoreService.java:593)
at
com.google.appengine.api.datastore.dev.LocalDatastoreService.access$300(LocalDatastoreService.java:146)
at
com.google.appengine.api.datastore.dev.LocalDatastoreService$2.run(LocalDatastoreService.java:582)
at java.security.AccessController.doPrivileged(Native Method)
at
com.google.appengine.api.datastore.dev.LocalDatastoreService.start(LocalDatastoreService.java:579)
at
com.google.appengine.tools.development.ApiProxyLocalImpl.startServices(ApiProxyLocalImpl.java:624)
at
com.google.appengine.tools.development.ApiProxyLocalImpl.access$700(ApiProxyLocalImpl.java:47)
at
com.google.appengine.tools.development.ApiProxyLocalImpl$2.run(ApiProxyLocalImpl.java:604)
at
com.google.appengine.tools.development.ApiProxyLocalImpl$2.run(ApiProxyLocalImpl.java:601)
at java.security.AccessController.doPrivileged(Native Method)
at
com.google.appengine.tools.development.ApiProxyLocalImpl.getService(ApiProxyLocalImpl.java:600)
at
com.google.appengine.tools.development.testing.LocalServiceTestHelper.getLocalService(LocalServiceTestHelper.java:589)
at
com.google.appengine.tools.development.testing.LocalDatastoreServiceTestConfig.getLocalDatastoreService(LocalDatastoreServiceTestConfig.java:295)
at
com.google.appengine.tools.development.testing.LocalDatastoreServiceTestConfig.tearDown(LocalDatastoreServiceTestConfig.java:289)
at
com.google.appengine.tools.development.testing.LocalServiceTestHelper.tearDownService(LocalServiceTestHelper.java:548)
at
com.google.appengine.tools.development.testing.LocalServiceTestHelper.tearDown(LocalServiceTestHelper.java:520)
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