Re: Avoid concurrency issues when setting node attributes

[Stefan Balev <stefan.balev AT gmail.com>]

Hi Daniele,

In all current implementations, each Node keeps its attributes in its own HashMap<String, Object>. As long as there is a single thread processing each node, manipulating attributes should not cause any concurrency issues.

Best,

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Stefan

2013/1/13 daniele visaggio <visaggio.daniele AT gmail.com>

Hi list,

I need to set nodes' attributes from a number of concurring threads.

Each thread owns a node object. Node objects are chosen by each thread at random from a LinkedBlockingQueue. No more than one thread can choose the same node, since we delete an already chosen node from LinkedBlockingQueue in an atomic way.

Now I need to perform a node.setAttribute() from each thread.

Is this a thread-safe operation in your opinion? or do I need to synchronize each setAttribute() in some way?

Thank you in advance,

Best Regards - Daniele