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  1. Flink
  2. FLINK-16245

Use a delegating classloader as the user code classloader to prevent class leaks.

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    Description

      As reported in FLINK-11205, a reference to the user-code ClassLoader can be held by some libraries, causing class leaks.

      One way to circumvent this class leak is if the ClassLoader that we set as the user-code ClassLoader is a delegating ClassLoader to the real class loader, and when closing the user code ClassLoader we null out the reference.

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          blocks

          Improvement - An improvement or enhancement to an existing feature or task. FLINK-16225 Metaspace Out Of Memory should be handled as Fatal Error in TaskManager

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          fixes

          Bug - A problem which impairs or prevents the functions of the product. FLINK-24080 FileCache can leak user code classloader

          • Major - Major loss of function.
          • Closed
          links to

          Web Link GitHub Pull Request #11303

          Web Link GitHub Pull Request #13027

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              arvid Arvid Heise
              sewen Stephan Ewen
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