大家！我正在处理非常大的集合，并在MongoDB中使用长管道进行聚合请求。在Node.js中，我的查询执行了超过2分钟，实际上由于连接超时，我没有任何响应，但是在Studio3T中，同一查询的执行时间最长为15秒。是因为Nodejs驱动程序引起的问题吗？它会像往常一样慢吗？
这是我的查询：
const pipeline = [
{
"$match": {
"_id.addr": address
}
},
{
"$unwind": "$value.data"
},
{
"$project": {
"_id.addr": 1.0,
"value.data": 1.0
}
},
{
"$group": {
"_id": {
"sender": "$_id.addr",
"receiver": "$value.data.to",
"token": {
"$split": [
"$value.data.t",
"_"
]
},
"amount": "$value.data.a"
}
}
},
{
"$group": {
"_id": {
"sender": "$_id.sender",
"receiver": "$_id.receiver",
"token": "$_id.token"
},
"count": {
"$sum": 1.0
},
"amount": {
"$sum": "$_id.amount"
}
}
},
{
"$group": {
"_id": {
"sender": "$_id.sender",
"receiver": "$_id.receiver",
"token": {
"name": {
"$arrayElemAt": [
"$_id.token",
0.0
]
},
"address": {
"$arrayElemAt": [
"$_id.token",
-1.0
]
}
},
"amount": "$amount",
"count": "$count"
}
}
},
{
"$lookup": {
"from": "history_coins_USD",
"localField": "_id.token.name",
"foreignField": "name",
"as": "price"
}
},
{
"$project": {
"_id": {
"sender": 1.0,
"receiver": 1.0,
"token": 1.0,
"amount": 1.0,
"price": {
"$arrayElemAt": [
"$price",
0.0
]
},
"count": 1.0
}
}
},
{
"$project": {
"_id": {
"sender": 1.0,
"receiver": 1.0,
"token": 1.0,
"amount": 1.0,
"price": {
"$arrayElemAt": [
"$_id.price.values",
-1.0
]
},
"count": 1.0
}
}
},
{
"$project": {
"_id": {
"sender": 1.0,
"receiver": 1.0,
"token": 1.0,
"amount": 1.0,
"price": {
"$multiply": [
"$_id.amount",
"$_id.price.close"
]
},
"count": 1.0
}
}
}
];
response = await
db.collection('mapReduce_address_cryptohound_eth_gas').aggregate(pipeline,
{ allowDiskUse: true }).toArray();
顺便说一句，如果我将Im放在管道$ sort的末尾，即使在studio3t中它也将永远执行...