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  1. HPCC
  2. HPCC-20296

Document __OPTION__(legacy[(true/false)])

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    Description

      In 7.0 the way disk files are projected has been changed.

      A new flag has been added to disk reads and indexes to control whether the new or old method of translating file formats is used.  It is primarily used for testing.

      Occasionally if a dataset contains an alien data type and the results are projected it may be necessary to add

       

      __OPTION__(LEGACY)
      

      to a dataset definition.  (The compiler will report an error message indicating that the option is required.)

       

      d := dataset('imgfile', { rawLayout x, unsigned8 _fpos{virtual(fileposition)} }, FLAT, __OPTION__(legacy)); 
      

       

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            jamesdefabia Jim DeFabia
            ghalliday Gavin Halliday
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              Created:
              Updated: