64d11b8831
This commit fixes a race condition in the node supplier used by the RemoteClusterConnection. The node supplier stores an iterator over a set backed by a ConcurrentHashMap, but the get operation of the supplier uses multiple methods of the iterator and is suceptible to a race between the calls to hasNext() and next(). The test in this commit fails under the old implementation with a NoSuchElementException. This commit adds a wrapper object over a set and a iterator, with all methods being synchronized to avoid races. Modifications to the set result in the iterator being set to null and the next retrieval creates a new iterator. |
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