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https://issues.apache.org/jira/browse/IGNITE-1581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Semen Boikov updated IGNITE-1581:
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Fix Version/s: (was: 1.6)
> Synchronous cache operation can deadlock on async semaphore.
> ------------------------------------------------------------
>
> Key: IGNITE-1581
> URL: https://issues.apache.org/jira/browse/IGNITE-1581
> Project: Ignite
> Issue Type: Sub-task
> Components: cache
> Affects Versions: ignite-1.4
> Reporter: Vladimir Ozerov
> Assignee: Semen Boikov
> Priority: Critical
>
> Problem can be reproduced as follows:
> 1) Set CacheConfiguration.setMaxConcurrentAsyncOperations() to a very small
> value, e.g. 3.
> 2) T1: Start PESSIMISTIC/REPEATABLE_READ tx and call Cache.get(1);
> 3) Start 3 other threads, initiate PESSIMISTIC/REPEATABLE_READ tx and call
> Cache.get(1) on them. They will stuck as expected.
> 4) T1: Call Cache.get(1) again. Instead of getting already locked value,
> thread is stuck on async semaphore acquire:
> {code}
> at sun.misc.Unsafe.park(Unsafe.java:-1)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:994)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1303)
> at java.util.concurrent.Semaphore.acquire(Semaphore.java:317)
> at
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.asyncOpAcquire(GridCacheAdapter.java:4329)
> at
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.asyncOp(GridCacheAdapter.java:4203)
> at
> org.apache.ignite.internal.processors.cache.distributed.dht.colocated.GridDhtColocatedCache.getAllAsync(GridDhtColocatedCache.java:211)
> at
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.getAllAsync(GridCacheAdapter.java:4609)
> at
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.get(GridCacheAdapter.java:4556)
> at
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.get(GridCacheAdapter.java:1569)
> {code}
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