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// Check proper covered index handling when query and processGetMore yield.
// SERVER-4975
if ( 0 ) { // SERVER-4975
t = db.jstests_coveredIndex3;
t2 = db.jstests_coveredIndex3_other;
t.drop();
t2.drop();
function doTest( batchSize ) {
// Insert an array, which will make the { a:1 } index multikey and should disable covered index
// matching.
p1 = startParallelShell(
'for( i = 0; i < 60; ++i ) { \
db.jstests_coveredIndex3.save( { a:[ 2000, 2001 ] } ); \
sleep( 300 ); \
}'
);
// Frequent writes cause the find operation to yield.
p2 = startParallelShell(
'for( i = 0; i < 1800; ++i ) { \
db.jstests_coveredIndex3_other.save( {} ); \
sleep( 10 ); \
}'
);
for( i = 0; i < 30; ++i ) {
t.drop();
t.ensureIndex( { a:1 } );
for( j = 0; j < 1000; ++j ) {
t.save( { a:j } );
}
c = t.find( {}, { _id:0, a:1 } ).hint( { a:1 } ).batchSize( batchSize );
while( c.hasNext() ) {
o = c.next();
// If o contains a high numeric 'a' value, it must come from an array saved in p1.
assert( !( o.a > 1500 ), 'improper object returned ' + tojson( o ) );
}
}
p1();
p2();
}
doTest( 2000 ); // Test query.
doTest( 500 ); // Try to test getMore - not clear if this will actually trigger the getMore issue.
}
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