hello, datax导入数据，task如果失败了，数据会丢失或重复吗

打扰下, datax导入数据，task如果失败了，数据会丢失或重复吗？
execuse me, to import data by datax, if task failover, will the data be lost or repeat ?

hope someone reply, if no, I am reading the source code.

The issue asks whether a failed DataX import can lose or duplicate data, but it does not identify a file, entry point, or reproducible failure. Start by reading the DataX source code and tracing task failure handling; the work is done only when the behavior is established and documented with supporting evidence.

Written by the indexing model from the issue text.