mongodb增量用query reader数据时，当数据量很大时报错Sort exceeded memory limit

datax版本：
http://datax-opensource.oss-cn-hangzhou.aliyuncs.com/datax.tar.gz

mongodb增量用query reader数据时，当数据量很大时报错报错详情：
com.mongodb.MongoQueryException: Query failed with error code 292 and error message 'PlanExecutor error during aggregation :: caused by :: Sort exceeded memory limit of 104857600 bytes, but did not opt in to external sorting. Aborting operation. Pass allowDiskUse:true to opt in.'

请问mongodbreader中有地方设置allowDiskUse:true吗？或者有其他方式解决分页排序问题不？
我在源码中未找到相关配置。

Start by inspecting the MongoDBReader entry point and its query or pagination handling; the issue does not name specific source files or tests. Reproduce the large-result query and trace where sorting or aggregation is configured. Done means the reader can process the reported large dataset without the memory-limit failure, with a test or documented verification if the repository provides one.

Written by the indexing model from the issue text.