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  1. IMPALA
  2. IMPALA-9570

Document about memory management for writing UDAFs

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    Details

    • Type: Documentation
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Docs
    • Labels:
      None
    • Epic Color:
      ghx-label-3

      Description

      In the current document, we have few words about memory management for writing UDAFs: https://impala.apache.org/docs/build/html/topics/impala_udf.html

      The only related sentense is "A serialize function that ... frees any memory allocated during the init, update, and merge phases."

      We can add more for clarifying it or add this link for further reading: https://github.com/apache/impala/blob/2f53783b14ddf215a4c96bc52a511d3a83896128/be/src/udf/udf.h#L358-L365

      BTW, the links of uda-sample.h and uda-sample.cc are not shown:
      http://impala.apache.org/docs/build/html/topics/impala_udf.html#uda_functions

      They are normal in Cloudera's doc: 
      https://docs.cloudera.com/documentation/enterprise/latest/topics/impala_udf.html#uda_functions

        Attachments

        1. apache doc.png
          30 kB
          Quanlong Huang
        2. cloudera doc.png
          137 kB
          Quanlong Huang
        3. image-2020-04-24-14-11-18-449.png
          69 kB
          shajini thayasingh

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            • Assignee:
              shajini shajini thayasingh
              Reporter:
              stigahuang Quanlong Huang
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              • Created:
                Updated: