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java.lang.NullPointerException: 	at org.apache.ignite.internal.processors.cache.GridCacheProcessor.onExchangeDone(GridCacheProcessor.java:1723)	at org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture.onDone(GridDhtPartitionsExchangeFuture.java:1109)	at org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture.onDone(GridDhtPartitionsExchangeFuture.java:87)	at org.apache.ignite.internal.util.future.GridFutureAdapter.onDone(GridFutureAdapter.java:334)	at org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture.init(GridDhtPartitionsExchangeFuture.java:873)	at org.apache.ignite.internal.processors.cache.GridCachePartitionExchangeManager$ExchangeWorker.body(GridCachePartitionExchangeManager.java:1297)	at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)	at java.lang.Thread.run(Thread.java:745)