Apache Spark perguntas e respostas de entrevista
Question: What is the Broadcast variable in Spark and when is it used?Answer: A Broadcast variable is a read-only variable cached on each worker node. It is used to efficiently distribute large read-only data structures, such as lookup tables, to all tasks in a Spark job.Example:
|
Salvar para revisao
Adicione este item aos favoritos, marque-o como dificil ou coloque-o em um conjunto de revisao.
Faca login para salvar favoritos, perguntas dificeis e conjuntos de revisao.
Isto e util? Sim Nao
Mais uteis segundo os usuarios:
- What is the purpose of the Spark SQL module?
- Explain the difference between narrow and wide transformations in Spark.