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From "Ilya Kasnacheev (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-9068) Node fails to stop when CacheObjectBinaryProcessor.addMeta() is executed inside guard()/unguard()
Date Tue, 24 Jul 2018 16:33:00 GMT
Ilya Kasnacheev created IGNITE-9068:
---------------------------------------

             Summary: Node fails to stop when CacheObjectBinaryProcessor.addMeta() is executed
inside guard()/unguard()
                 Key: IGNITE-9068
                 URL: https://issues.apache.org/jira/browse/IGNITE-9068
             Project: Ignite
          Issue Type: Bug
          Components: binary, managed services
    Affects Versions: 2.5
            Reporter: Ilya Kasnacheev
         Attachments: GridServiceDeadlockTest.java

When addMeta is called in e.g. service deployment it us executed inside guard()/unguard()

If node will be stopped at this point, Ignite.stop() will hang.

Consider the following thread dump:
{code}
"Thread-1" #57 prio=5 os_prio=0 tid=0x00007f7780005000 nid=0x7f26 runnable [0x00007f766cbef000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x00000005cb7b0468> (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireNanos(AbstractQueuedSynchronizer.java:934)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireNanos(AbstractQueuedSynchronizer.java:1247)
	at java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.tryLock(ReentrantReadWriteLock.java:1115)
	at org.apache.ignite.internal.util.StripedCompositeReadWriteLock$WriteLock.tryLock(StripedCompositeReadWriteLock.java:220)
	at org.apache.ignite.internal.GridKernalGatewayImpl.tryWriteLock(GridKernalGatewayImpl.java:143)
        // Waiting for lock to cancel futures of BinaryMetadataTransport
	at org.apache.ignite.internal.IgniteKernal.stop0(IgniteKernal.java:2171)
	at org.apache.ignite.internal.IgniteKernal.stop(IgniteKernal.java:2094)
	at org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.stop0(IgnitionEx.java:2545)
	- locked <0x00000005cb423f00> (a org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance)
	at org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.stop(IgnitionEx.java:2508)
	at org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance$2.run(IgnitionEx.java:2033)

"test-runner-#1%service.GridServiceDeadlockTest%" #13 prio=5 os_prio=0 tid=0x00007f77b87d5800
nid=0x7eb8 waiting on condition [0x00007f778cdfc000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:304)
        // May never return if there's discovery problems
	at org.apache.ignite.internal.util.future.GridFutureAdapter.get0(GridFutureAdapter.java:177)
	at org.apache.ignite.internal.util.future.GridFutureAdapter.get(GridFutureAdapter.java:140)
	at org.apache.ignite.internal.processors.cache.binary.CacheObjectBinaryProcessorImpl.addMeta(CacheObjectBinaryProcessorImpl.java:463)
	at org.apache.ignite.internal.processors.cache.binary.CacheObjectBinaryProcessorImpl$2.addMeta(CacheObjectBinaryProcessorImpl.java:188)
	at org.apache.ignite.internal.binary.BinaryContext.registerUserClassDescriptor(BinaryContext.java:802)
	at org.apache.ignite.internal.binary.BinaryContext.registerClassDescriptor(BinaryContext.java:761)
	at org.apache.ignite.internal.binary.BinaryContext.descriptorForClass(BinaryContext.java:627)
	at org.apache.ignite.internal.binary.BinaryWriterExImpl.marshal0(BinaryWriterExImpl.java:174)
	at org.apache.ignite.internal.binary.BinaryWriterExImpl.marshal(BinaryWriterExImpl.java:157)
	at org.apache.ignite.internal.binary.BinaryWriterExImpl.marshal(BinaryWriterExImpl.java:144)
	at org.apache.ignite.internal.binary.GridBinaryMarshaller.marshal(GridBinaryMarshaller.java:254)
	at org.apache.ignite.internal.binary.BinaryMarshaller.marshal0(BinaryMarshaller.java:82)
	at org.apache.ignite.marshaller.AbstractNodeNameAwareMarshaller.marshal(AbstractNodeNameAwareMarshaller.java:58)
	at org.apache.ignite.internal.util.IgniteUtils.marshal(IgniteUtils.java:10069)
	at org.apache.ignite.internal.processors.service.GridServiceProcessor.prepareServiceConfigurations(GridServiceProcessor.java:570)
	at org.apache.ignite.internal.processors.service.GridServiceProcessor.deployAll(GridServiceProcessor.java:622)
	at org.apache.ignite.internal.processors.service.GridServiceProcessor.deployAll(GridServiceProcessor.java:610)
        // Lock held here:
	at org.apache.ignite.internal.processors.service.GridServiceProcessor.deployMultiple(GridServiceProcessor.java:498)
	at org.apache.ignite.internal.IgniteServicesImpl.deployMultiple(IgniteServicesImpl.java:153)
	at org.apache.ignite.internal.processors.service.GridServiceDeadlockTest.testMetadataDeadlock(GridServiceDeadlockTest.java:48)
{code}

It seems that waiting for futures inside addMeta (and for that matter inside guard()/unguard()
for service deploy) is not safe. Some kind of continuation / compound future is desired here.
I am attaching a reproducing test.



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