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  1. Hadoop Common
  2. HADOOP-10811

Allow classes to be reloaded at runtime

    Details

    • Type: New Feature
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: 3.0.0-alpha1
    • Fix Version/s: None
    • Component/s: conf
    • Labels:
      None

      Description

      Currently hadoop loads its classes and caches them in the Configuration class. Even if the user swaps a class's jar at runtime, hadoop will continue to use the cached classes when using reflection to instantiate objects. This limits the usefulness of things like HADOOP-10285, because the admin would need to restart each time they wanted to change their queue class.

      This patch is to add a way to refresh the class cache, by creating a new refresh handler to do so (using HADOOP-10376)

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            • Assignee:
              chrilisf Chris Li
              Reporter:
              chrilisf Chris Li
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              • Created:
                Updated: