[jira] [Created] (IGNITE-5527) GridDeferredAckMessageSender can cause starvation in stripe pool on unstable topology.

["Andrew Mashenkov (JIRA)" <ji...@apache.org>]

Andrew Mashenkov created IGNITE-5527:
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             Summary: GridDeferredAckMessageSender can cause starvation in stripe pool on unstable topology.
                 Key: IGNITE-5527
                 URL: https://issues.apache.org/jira/browse/IGNITE-5527
             Project: Ignite
          Issue Type: Bug
          Components: clients, general
            Reporter: Andrew Mashenkov
             Fix For: 2.1


Slow or failed client can cause starvation in stripe-pool.

GridDeferredAckMessageSender.sendDeferredAckMessage() can stucks when add message to buffer while other thread trying to send this buffer.

Seems, we shouldn't wait for readLock in DeferredAckMessageBuffer.add() method and return false immediately.

Stacktrace:

Thread [name="sys-stripe-3-#4%null%", id=16, state=WAITING, blockCnt=3087, waitCnt=204846]
 Lock [object=java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync@54ef60c9, ownerName=sys-#12106%null%, ownerId=12326]
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireShared(AbstractQueuedSynchronizer.java:967)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1283)
        at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:727)
        at o.a.i.i.processors.cache.GridDeferredAckMessageSender$DeferredAckMessageBuffer.add(GridDeferredAckMessageSender.java:176)
        at o.a.i.i.processors.cache.GridDeferredAckMessageSender.sendDeferredAckMessage(GridDeferredAckMessageSender.java:100)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.sendDeferredUpdateResponse(GridDhtAtomicCache.java:3371)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.processDhtAtomicUpdateRequest(GridDhtAtomicCache.java:3353)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.access$1800(GridDhtAtomicCache.java:130)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$8.apply(GridDhtAtomicCache.java:379)
        at o.a.i.i.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$8.apply(GridDhtAtomicCache.java:374)
        at o.a.i.i.processors.cache.GridCacheIoManager.processMessage(GridCacheIoManager.java:827)
        at o.a.i.i.processors.cache.GridCacheIoManager.onMessage0(GridCacheIoManager.java:369)
        at o.a.i.i.processors.cache.GridCacheIoManager.handleMessage(GridCacheIoManager.java:293)
        at o.a.i.i.processors.cache.GridCacheIoManager.access$000(GridCacheIoManager.java:95)
        at o.a.i.i.processors.cache.GridCacheIoManager$1.onMessage(GridCacheIoManager.java:238)
        at o.a.i.i.managers.communication.GridIoManager.invokeListener(GridIoManager.java:1217)
        at o.a.i.i.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:845)
        at o.a.i.i.managers.communication.GridIoManager.access$2100(GridIoManager.java:109)
        at o.a.i.i.managers.communication.GridIoManager$6.run(GridIoManager.java:785)
        at o.a.i.i.util.StripedExecutor$Stripe.run(StripedExecutor.java:428)
        at java.lang.Thread.run(Thread.java:745)



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