Loader job execution fails, the imported data will not be deleted automatically, and must be deleted manually.

In the WebHCat architecture, which of the following operations can users perform through the secure HTTPS protocol?

The data stream of Flume can be sent to different Channels according to the information in the headers.

Regarding DataSet, which of the following statements is incorrect?

Assuming that HDFS only saves 2 copies when writing data. During the writing process, the HDFS Client first writes the data to DataNodel1 and then writes the data to DataNode2.