フリー問題

問題文

A streaming mapping writes to a complex file target on HDFS and runs on the Spark engine. A pair of the write settings are left as they ship. Which pair completes this sentence correctly?

選択肢

1. Text is the class name that the output key class falls back to, and the pool size that pool.maxTotal hands one Spark executor is 8
2. Text is the class name that the output key class falls back to, and the pool size that pool.maxTotal hands one Spark executor is 16
3. Text is the class name that the output value class falls back to, and the pool size that pool.maxTotal hands one Spark executor is 8
4. Text is the class name that the output value class falls back to, and the pool size that pool.maxTotal hands one Spark executor is 16