Andrey Gura created IGNITE-2646:
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Summary: IgniteCompute.withAsync can execute tasks synchronously
Key: IGNITE-2646
URL: https://issues.apache.org/jira/browse/IGNITE-2646
Project: Ignite
Issue Type: Bug
Components: compute
Affects Versions: 1.5.0.final
Reporter: Andrey Gura
Assignee: Andrey Gura
{{GridTaskWorker}} can invoke {{reduce}} method in caller thread.
If task isn't annotated by {{@ComputeTaskMapAsync}} then job mapping will be
run in caller thread. Since job mapping will be finished
{{processDelayedResponses}} method will be invoked and if delayed responses
queue isn't empty then caller thread can invoke {{reduce}} method eventually
and perform reducing synchronously.
It can be usefull in case of synchronous execution but, it is strange behavior
for asynchronous case because user expects that method will return after
creation of task.
Similar behavior is possible for all places where code invokes
{{GridTaskProcessor.execute()}} method ({{IgniteCompute.broadcast()}},
{{IgniteCache.size()}}, REST handlers, etc.)
Rerated discussion on dev-list: [IgniteCompute.withAsync can execute tasks
synchronously|http://apache-ignite-developers.2346864.n4.nabble.com/IgniteCompute-withAsync-can-execute-tasks-synchronously-td7262.html]
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