[jbosscache-issues] [JBoss JIRA] Assigned: (JBCACHE-1359) Nodes are not removed during commit if new children have been added to their parents

Nodes are not removed during commit if new children have been added to their parents ------------------------------------------------------------------------------------ Key: JBCACHE-1359 URL: https://jira.jboss.org/jira/browse/JBCACHE-1359 Project: JBoss Cache Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 1.4.1.SP9 Reporter: Kai Blankenhorn Assignee: Mircea Markus Fix For: 1.4.X Attachments: ParentNodesNotUnmarkedTest.java, TreeCache_JBCACHE-1359.diff Say we have a cache instance called "cache" that is configured to use a custom CacheLoader that always returns "value from CacheLoader". Now we call: cache.put("/a/b/c", "key", "cachedValue"); cache.remove(Fqn.ROOT); cache.put("/a/B/c", "key", "cachedValue"); commitTx(); String val = (String) cache.get("/a/b/c", "key"); assertEquals("value from CacheLoader", val); The result will be null instead of "value from CacheLoader". The problem is that the parent nodes (for instance, "/a/b") are marked for removal. In the same transaction after removing "/a/b", "/a" is readded and thus unmarked. When the transaction is committed, "/a" is about to be realRemove()d. But this method skips the node and its children, as it is no longer marked for removal. This way "/a/b" is never removed and stays marked for removal. When reading "/a/b/c", the iteration over the fqn elements in TreeCache.findInternal() skips all nodes marked for removal, never reaching the requested node.