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  1. Pig
  2. PIG-3764 Compile physical operators to bytecode
  3. PIG-5291

Fix bytecode generation for parallel runs of python

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    • Sub-task
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • 0.18.0
    • impl
    • None

    Description

      With pig.opt.bytecode=true with PIG-5256, TestScriptLanguage.runParallelTest2, Jython_CompileBindRun_3 fail with following error

       java.lang.LinkageError: loader (instance of  org/apache/pig/impl/PigContext$ContextClassLoader): attempted  duplicate class definition for name: "org/apache/pig/backend/hadoop/executionengine/physicalLayer/relationalOperators/POForEach_scope_6"

      Since NodeIdGenerator is ThreadLocal, running same script in parallel with different parameters using embedded Python causes conflict in the name of class files generated. Conflicts need to be handled in

      • PigContext classloader by making it ThreadLocal
      • Class files should have another identifier to differentiate between multiple scripts.

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            Unassigned Unassigned
            rohini Rohini Palaniswamy
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              Created:
              Updated: