jstests/sortb.js


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// Test that the in memory sort capacity limit is checked for all "top N" sort candidates.
// SERVER-4716

t = db.jstests_sortb;
t.drop();

t.ensureIndex({b:1});

for( i = 0; i < 100; ++i ) {
    t.save( {a:i,b:i} );
}

// These large documents will not be part of the initial set of "top 100" matches, and they will
// not be part of the final set of "top 100" matches returned to the client.  However, they are an
// intermediate set of "top 100" matches and should trigger an in memory sort capacity exception.
big = new Array( 1024 * 1024 ).toString();
for( i = 100; i < 200; ++i ) {
    t.save( {a:i,b:i,big:big} );
}

for( i = 200; i < 300; ++i ) {
    t.save( {a:i,b:i} );
}

assert.throws( function() { t.find().sort( {a:-1} ).hint( {b:1} ).limit( 100 ).itcount(); } );
assert.throws( function() { t.find().sort( {a:-1} ).hint( {b:1} ).showDiskLoc().limit( 100 ).itcount(); } );
t.drop();