程序包 org.apache.iotdb.db.query.control

类概要

类	说明
FileReaderManager	FileReaderManager is a singleton, which is used to manage all file readers(opened file streams) to ensure that each file is opened at most once.
QueryFileManager	QueryFileManager records the paths of files that every query uses for QueryResourceManager.
QueryResourceManager	QueryResourceManager manages resource (file streams) used by each query job, and assign Ids to the jobs.
QueryTimeManager	This class is used to monitor the executing time of each query.
SessionManager
SessionTimeoutManager