聚合看起来像:
res = Things.objects._collection.aggregate(pipeline,
allowDiskUse=True,
batchSize=101,
noCursorTimeout=True
)
失败了
OperationFailure:无法识别的字段noCursorTimeout"
OperationFailure: unrecognized field 'noCursorTimeout'
从 Pymongo 文档中可以看出 no_cursor_timeout 可以与 find() 一起使用，但是我一直没有成功为 aggregate() 找到可比较的 **kwargs.
It appears from the Pymongo documentation that no_cursor_timeout can be used with find(), however I have been unsuccessful locating a comparable **kwargs for aggregate().
我不想使用 setParameter 或 maxTimeMS.
I do not want to use setParameter or maxTimeMS.
更新:
来自 MongoDB 的 Jira 站点:SERVER-15042
From MongoDB's Jira Site: SERVER-15042
OP_QUERY 标头中的 NoCursorTimeout 位可防止服务器关闭空闲超过 10 分钟的游标.如果客户可能花费超过 10 分钟来处理一批结果，则可以设置此位.
The NoCursorTimeout bit in the OP_QUERY header prevents the server from closing a cursor that's idle for more than 10 minutes. Clients can set this bit if they may spend more than 10 minutes processing a batch of results.
aggregate"和parallelCollectionScan"命令也应该允许客户端关闭光标超时.
The "aggregate" and "parallelCollectionScan" commands should allow the client to turn off cursor timeouts, too.
对这张票的回应是:
我们故意不支持 noCursorTimeout.理由当我们实现游标保持活动时，需要这个就会消失.那将在 SERVER-6036 中跟踪工作.
We intentionally do not support noCursorTimeout. The rationale for needing this will go away when we implement cursor keepalive. That work will be tracked in SERVER-6036.
查看 SERVER-6036:
如果我已正确阅读文档，则聚合()尚不存在游标无超时选项.
If I have read the documents correctly, a cursor no timeout option does not exist yet for aggregate().
你是对的，不能在单个聚合游标上禁用游标超时.但是我们提供了一个全局配置设置，cursorTimeoutMillis，您可以将其增加到一个大数字:
You're correct, cursor timeout can't be disabled on individual aggregation cursors. But we've provided a global config setting, cursorTimeoutMillis, that you can increase to a large number:
mongod --setParameter cursorTimeoutMillis=600000 # 10 minutes
请参阅 SERVER-8188 了解 MongoDB 版本信息，以及如何在以下位置设置此参数运行时.
See SERVER-8188 for MongoDB version info, and how to set this parameter at runtime.
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