48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
// Test yielding group command SERVER-1395
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t = db.jstests_group7;
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t.drop();
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function checkForYield( docs, updates ) {
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t.drop();
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a = 0;
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for( var i = 0; i < docs; ++i ) {
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t.save( {a:a} );
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}
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// Iteratively update all a values atomically.
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p = startParallelShell(
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'for( a = 0; a < ' + updates + '; ++a ) {' +
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'db.jstests_group7.update({ $atomic: true }, { $set: { a: a }}, false, true);' +
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'}' );
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for( var i = 0; i < updates; ++i ) {
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print("running group " + i + " of " + updates);
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ret = t.group({key:{a:1},reduce:function(){},initial:{}});
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// Check if group sees more than one a value, indicating that it yielded.
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if ( ret.length > 1 ) {
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p();
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return true;
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}
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printjson( ret );
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}
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p();
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return false;
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}
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var yielded = false;
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var docs = 1500;
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var updates = 50;
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for( var j = 1; j <= 6; ++j ) {
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print("Iteration " + j + " docs = " + docs + " updates = " + updates);
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if ( checkForYield( docs, updates ) ) {
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yielded = true;
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break;
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}
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// Increase docs and updates to encourage yielding.
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docs *= 2;
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updates *= 2;
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}
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assert( yielded );
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