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what do these lines means in servlet 3.0 specification ?

gurpeet singh
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Posts: 924
Fedora Java Netbeans IDE
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Hi Everybody,

i have started with servlet 3.0 specification and currently on the topic of asynchronous processing. i'm unable to understand the following piece of line . the below lines can be found at section Asynchronous Processing , page 11

The application is responsible to handle concurrent access to the request and response
objects if the async task is executing before the container-initiated dispatch that
called startAsync has returned to the container.

i'm not able to understand what do the lines " if the aysnc task is executing.......has returned to the container " means ?

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