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  1. Core Server
  2. SERVER-4907

sparse indexes break replication of array based operators

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      When an array based operator is applied to a field that is absent, the replicated operation checks that the field matches null. If there is a sparse index on the field, the operation may not be replicated properly.

      Test

      function doTest( sparse ) {
    rt = new ReplTest( "repl14tests" );
    
    m = rt.start( true );
    mc = m.getDB( 'd' )[ 'c' ];
    
    mc.ensureIndex( {a:1}, {sparse:sparse} );
    mc.save( {} );
    
    s = rt.start( false );
    sc = s.getDB( 'd' )[ 'c' ];
    
    assert.soon( function() { return sc.count() > 0; } );
    
    mc.update( {}, {$push:{a:1}} );
    
    assert.soon( function() { return sc.count( {a:1} ) > 0; } );
    
    rt.stop();
}

doTest( false );
doTest( true );

            Assignee:
            aaron Aaron Staple
            Reporter:
            aaron Aaron Staple
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              Created:
              Updated:
              Resolved: