[infinispan-issues] [JBoss JIRA] (ISPN-2865) Error calling clear() via JMX on a transactional cache with autoCommit=false

[Mircea Markus (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12757613#comment-12757613 ] 

Mircea Markus edited comment on ISPN-2865 at 2/28/13 1:04 PM:
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The fix is not as trivial as expected.
It requires adding a a new method on CacheImpl, different that clear, which would always start a transaction for tx caches, and this metod to be exposed under the "clear" JMX operation. The problem is that when doing    @ManagedOperation(name="clear") doesn't do the trick - might be a problem with the JMX annotation fwk, to be investigated.

                
      was (Author: mircea.markus):
    The fix is not as trivial as expected.
It requires adding a a new mothod on CacheImpl, different that clear, which would always start a transaction for tx caches, and this metod to be exposed under the "clear" JMX operation. The problem is that when doing    @ManagedOperation(name="clear") doesn't do the trick - might be a problem with the JMX annotation fwk, to be investigated.

                  
> Error calling clear() via JMX on a transactional cache with autoCommit=false
> ----------------------------------------------------------------------------
>
>                 Key: ISPN-2865
>                 URL: https://issues.jboss.org/browse/ISPN-2865
>             Project: Infinispan
>          Issue Type: Bug
>          Components: JMX, reporting and management
>    Affects Versions: 5.2.1.Final
>         Environment: Apache Tomcat on Linux and Windows
>            Reporter: Marc Richards
>            Assignee: Mircea Markus
>              Labels: 5.2.x
>             Fix For: 5.2.3.Final, 5.3.0.Final
>
>
> Calling clear() via JMX (e.g. JConsole) on a transactional cache with autoCommit="false" fails with an IllegalStateException.
> Looking at the source code it would appear that the expectation is that the call to clear() would have been wrapped in a transaction, however that is not currently happening for calls made via JMX if autoCommit="false".
>  
> The [clear() method in CacheImpl.java line 321|https://github.com/infinispan/infinispan/blob/5.2.1.Final/core/src/main/java/org/infinispan/CacheImpl.java#L321] calls getInvocationContextWithImplicitTransaction() which tests to see if there is an ongoing transaction [on line 482|https://github.com/infinispan/infinispan/blob/5.2.1.Final/core/src/main/java/org/infinispan/CacheImpl.java#L482] .  If autocommit is turned on, it will automatically create an implicit transaction, but if it is off as I had it, it will simply call createInvocationContext() and throw an IllegalStateException when it sees that the transaction is still null in [TransactionalInvocationContextContainer.java on line 112|https://github.com/infinispan/infinispan/blob/5.2.1.Final/core/src/main/java/org/infinispan/context/TransactionalInvocationContextContainer.java#L112].
> I currently work around the issue by setting autoCommit="true", but that is not an ideal solution.

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