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@@ -242,6 +242,16 @@ you want to remain exclusively *your cluster*.
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Finally, if you are using Hadoop as a service deployed/managed by someone else,
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do determine what security their products offer and make sure it meets your requirements.
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+Protobuf Compatibility
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+===============
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+
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+In HADOOP-18197, we upgraded the Protobuf in hadoop-thirdparty to version 3.21.12.
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+This version may have compatibility issues with certain versions of JDK8,
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+and you may encounter some errors (please refer to the discussion in HADOOP-18197 for specific details).
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+
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+To address this issue, we recommend upgrading the JDK version in your production environment to a higher version (> JDK8).
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+We will resolve this issue by upgrading hadoop-thirdparty's Protobuf to a higher version in a future release of 3.4.x.
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+Please note that we will discontinue support for JDK8 in future releases of 3.4.x.
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Getting Started
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===============
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slfan1989