Juan José Ramos Cassella created GEODE-6759:
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Summary: NPE When Executing a Function With Destroyed Pool
Key: GEODE-6759
URL: https://issues.apache.org/jira/browse/GEODE-6759
Project: Geode
Issue Type: Bug
Components: client/server
Reporter: Juan José Ramos Cassella
A {{NullPointerException}} can be thrown on client side if the application
executes a function on a pool that has been destroyed.
The following code reproduces the issue:
{code:java}
ClientCache clientCache = new ClientCacheFactory().create();
PoolManager.createFactory().addLocator(InetAddress.getLocalHost().getHostName(),
locator.getPort()).create("poolOne");
Region region =
clientCache.createClientRegionFactory(PROXY).setPoolName("poolOne").create("TestRegion");
PoolManagerImpl.getPMI().unregister(PoolManager.find("poolOne"));
FunctionService.onRegion(region).execute(testFunction).getResult();
{code}
The problem is that we don't verify whether the {{Pool}} is currently being
used or not within the {{unregister}} method. The following should be done:
# Don't allow the user to unregister the pool when at least one region is
associated to it.
# Throw a meaningful exception if the pool can't be found before executing the
function.
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