// @tags: [
//   requires_non_retryable_writes,
//   uses_multiple_connections,
//   uses_parallel_shell,
// ]

// Sanity test for removing documents with adjacent index keys.  SERVER-2008

let t = db.jstests_removec;
t.drop();
t.createIndex({a: 1});

/** @return an array containing a sequence of numbers from i to i + 10. */
function runStartingWith(i) {
    let ret = [];
    for (let j = 0; j < 11; ++j) {
        ret.push(i + j);
    }
    return ret;
}

// Insert some documents with adjacent index keys.
for (let i = 0; i < 1100; i += 11) {
    t.save({a: runStartingWith(i)});
}

// Remove and then reinsert random documents in the background.
let s = startParallelShell(function() {
    const t = db.jstests_removec;
    Random.setRandomSeed();
    for (let j = 0; j < 1000; ++j) {
        const o = t.findOne({a: Random.randInt(1100)});
        t.remove({_id: o._id});
        t.insert(o);
    }
});

// Find operations are error free. Note that the cursor throws if it detects the $err
// field in the returned document.
for (let i = 0; i < 200; ++i) {
    t.find({a: {$gte: 0}}).hint({a: 1}).itcount();
}

s();

t.drop();