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// SERVER-2810 - similar to explain1 test, but with a scan and order find
t = db.jstests_slowNightly_explain3;
t.drop();
// Periodically drops the collection, invalidating client cursors for s2's operations.
s1 = startParallelShell(function() {
t = db.jstests_slowNightly_explain3;
for (var i = 0; i < 80; ++i) {
t.drop();
t.ensureIndex({x: 1});
for (var j = 0; j < 1000; ++j) {
t.save({x: j, y: 1});
}
sleep(100);
}
});
// Query repeatedly.
s2 = startParallelShell(function() {
t = db.jstests_slowNightly_explain3;
for (var i = 0; i < 500; ++i) {
try {
z = t.find({x: {$gt: 0}, y: 1}).sort({x: 1}).explain();
} catch (e) {
}
}
});
// Put pressure on s2 to yield more often.
s3 = startParallelShell(function() {
t = db.jstests_slowNightly_explain3;
for (var i = 0; i < 200; ++i) {
t.validate({scandata: true});
}
});
s1();
s2();
s3();
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