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  1. Core Server
  2. SERVER-4327

allow dummy table scans in no table scan mode

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Incomplete
    • None
    • None
    • Querying
    • ALL

    Description

      Implement what I described here:

              if ( _impossible ) {
                  // TODO We might want to allow this dummy table scan even in no table
                  // scan mode, since it won't scan anything.
                  if ( _frs.nNontrivialRanges() )
                      checkTableScanAllowed( _frs.ns() );
                  return shared_ptr<Cursor>( new BasicCursor( DiskLoc() ) );
              }

      Also audit additional notablescan functionality (see SERVER-2222).

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              david.storch@mongodb.com David Storch
              aaron Aaron Staple
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                Created:
                Updated:
                Resolved: