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  1. Talend Component Kit
  2. TCOMP-1721

Component Manager Singleton is not thread safe

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      get several thread that start a ComponentManager.instance()

      => Some times, you will get "null" or "different instances on differents thread"

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      get several thread that start a ComponentManager.instance() => Some times, you will get "null" or "different instances on differents thread"
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    Description

      Null pointer exception is due to a frequent singleton code mistake, as you can read here, it use "Synchronisation Locale" Method which is known to have trouble due to compilation "optimization" from JVM.
      We have to use "Technique du Holder" instead.
      POC made with modification on ComponentManager.java work better (with other modification to make ComponentManager more thread safe)

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          Bug - TDI-44442 tRabbitMQ --> Can't have multiple tRabbitMQOutput or multiple tRabbitMQInput in a job

          • Major - There are major errors in a system function. However, the error situation is not critical. The customer's business may be impaired by it.
          • Rejected

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              emmanuel_g emmanuel gallois
              clesaec Christophe LeSaec
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