TailerSequenceRaceConditionTest#shouldAlwaysBeAbleToTail fails on rare occasions

[dpisklov]

Fails with one of the following:

java.lang.IllegalStateException: expecting index, was foo, bytes: 000000c0                          c3 66 6f 6f 64 65 78 32          ·foodex2
000000d0 69 6e 64 65 78 8f 8f 8d  00 10 00 00 00 00 00 00 index··· ········
000000e0 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 ········ ········
........
000004c0 00 00 00 00 00 00 00 00                          ········         
... truncated
	at net.openhft.chronicle.queue.impl.single.SCQIndexing.array(SCQIndexing.java:167)
	at net.openhft.chronicle.queue.impl.single.SCQIndexing.getIndex2index(SCQIndexing.java:560)
	at net.openhft.chronicle.queue.impl.single.SCQIndexing.initIndex(SCQIndexing.java:547)
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueueStore.initIndex(SingleChronicleQueueStore.java:321)
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueue$StoreSupplier.acquire(SingleChronicleQueue.java:892)
	at net.openhft.chronicle.queue.impl.WireStorePool.acquire(WireStorePool.java:97)
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueue.storeForCycle(SingleChronicleQueue.java:492)
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueueExcerpts$StoreTailer.optimizedToEnd(SingleChronicleQueueExcerpts.java:1654)
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueueExcerpts$StoreTailer.toEnd(SingleChronicleQueueExcerpts.java:1628)
	at net.openhft.chronicle.queue.impl.single.TailerSequenceRaceConditionTest.attemptToMoveToTail(TailerSequenceRaceConditionTest.java:63)
	at net.openhft.chronicle.queue.impl.single.TailerSequenceRaceConditionTest.lambda$shouldAlwaysBeAbleToTail$2(TailerSequenceRaceConditionTest.java:34)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
java.lang.IllegalStateException: NOT_REACHED index: 6bcb400000000, tailer state=FOUND_CYCLE, now: 6bcb400000000
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueueExcerpts$StoreTailer.originalToEnd(SingleChronicleQueueExcerpts.java:1728)
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueueExcerpts$StoreTailer.optimizedToEnd(SingleChronicleQueueExcerpts.java:1675)
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueueExcerpts$StoreTailer.toEnd(SingleChronicleQueueExcerpts.java:1628)
	at net.openhft.chronicle.queue.impl.single.TailerSequenceRaceConditionTest.attemptToMoveToTail(TailerSequenceRaceConditionTest.java:63)
	at net.openhft.chronicle.queue.impl.single.TailerSequenceRaceConditionTest.lambda$shouldAlwaysBeAbleToTail$2(TailerSequenceRaceConditionTest.java:34)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

java.lang.IllegalStateException: Store not found for cycle 6bcb3. Probably the files were removed?
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueueExcerpts$StoreTailer.optimizedToEnd(SingleChronicleQueueExcerpts.java:1657)
	at net.openhft.chronicle.queue.impl.single.SingleChronicleQueueExcerpts$StoreTailer.toEnd(SingleChronicleQueueExcerpts.java:1628)
	at net.openhft.chronicle.queue.impl.single.TailerSequenceRaceConditionTest.attemptToMoveToTail(TailerSequenceRaceConditionTest.java:63)
	at net.openhft.chronicle.queue.impl.single.TailerSequenceRaceConditionTest.lambda$shouldAlwaysBeAbleToTail$2(TailerSequenceRaceConditionTest.java:34)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)