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// Test background index creation w/ constraints
parallel = function() {
return db[ baseName + "_parallelStatus" ];
}
resetParallel = function() {
parallel().drop();
}
doParallel = function( work ) {
resetParallel();
startMongoProgramNoConnect( "mongo", "--eval", work + "; db." + baseName + "_parallelStatus.save( {done:1} );", db.getMongo().host );
}
doneParallel = function() {
return !!parallel().findOne();
}
waitParallel = function() {
assert.soon( function() { return doneParallel(); }, "parallel did not finish in time", 300000, 1000 );
}
doTest = function(dropDups) {
size = 10000;
while (1) { // if indexing finishes before we can run checks, try indexing w/ more data
print("size: " + size);
baseName = "jstests_index12";
fullName = "db." + baseName;
t = db[baseName];
t.drop();
db.eval(function(size) {
for (i = 0; i < size; ++i) {
db.jstests_index12.save({ i: i });
}
},
size);
assert.eq(size, t.count());
doParallel(fullName + ".ensureIndex( {i:1}, {background:true, unique:true, dropDups:" + dropDups + "} )");
try {
// wait for indexing to start
assert.soon(function() { return 2 == db.system.indexes.count({ ns: "test." + baseName }) }, "no index created", 30000, 50);
t.save({ i: 0, n: true });
//printjson(db.getLastError());
t.save({ i: size - 1, n: true });
//printjson(db.getLastError());
} catch (e) {
// only a failure if we're still indexing
// wait for parallel status to update to reflect indexing status
sleep(1000);
if (!doneParallel()) {
throw e;
}
}
if (!doneParallel()) {
break;
}
print("indexing finished too soon, retrying...");
size *= 2;
assert(size < 5000000, "unable to run checks in parallel with index creation");
}
waitParallel();
if( dropDups == "true" ) {
assert.eq(size, t.find().toArray().length, "full query failed");
assert.eq(size, t.count(), "count failed");
}
else {
/* without dropdups, it could be that there is more than size now but the index failed
to build - which is valid. we check index isn't there.
*/
if (t.count() != size)
assert.eq(1, t.getIndexes().length, "change in # of elems yet index is there");
}
}
doTest( "false" );
doTest( "true" );
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