Details
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Bug
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Resolution: Done
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Major
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9.0.0.Final
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None
Description
In transactional mode, functional read write command loads the value into the context without making a defensive copy. Then, the function is applied directly on that value, exposing uncommitted changes to all other threads. Rollback is ineffective, the value is already changed.
There are no tests for rollback in FunctionalTxInMemoryTest.
Reproducer:
@Test public void testValueInContextIsACopy() throws Exception { Object key = getKeyForCache(cache(0, DIST), cache(1, DIST)); cache(0, DIST).put(key, new ArrayList()); tm.begin(); // nasty cast FunctionalMap.ReadWriteMap<Object, List> otherRw = (FunctionalMap.ReadWriteMap) rw; otherRw.eval(key, (Serializable & Function<EntryView.ReadWriteEntryView<Object, List>, Object>) view -> { List list = view.get(); list.add("woohoo"); view.set(list); return null; }).join(); tm.rollback(); assertEquals(new ArrayList(), cache(0, DIST).get(key)); }
