How is an RDD formed?

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1. An RDD compatible with Hadoop can be created from the Hadoop file system or other storage systems that are compatible with Hadoop. HDFS is an example.
2. A new RDD can be converted from a parent RDD.
3. An RDD can be converted from a collection.

Other related questions:
How is an RDD generated?
1. An RDD compatible with Hadoop can be created from the Hadoop file system or other storage systems that are compatible with Hadoop. HDFS is an example. 2. A new RDD can be converted from a parent RDD. 3. An RDD can be converted from a collection.

What is the concept of RDD?
Resilient Distributed Dataset (RDD) is a core concept of Spark. It indicates a read-only distributed dataset that can be partitioned. Partial or all data of this dataset can be cached in the memory and reused in subsequent computations.

RDD storage modes
1. Users can select different storage levels to cache an RDD for reuse. (There are 11 storage levels for storing an RDD.) 2. The current RDD is stored in the memory by default. When the memory is insufficient, the RDD overflows to the disk.

Generation process of RDDs
1. An RDD compatible with Hadoop can be created from the Hadoop file system or other storage systems that are compatible with Hadoop. HDFS is an example. 2. A new RDD can be converted from a parent RDD. 3. An RDD can be converted from a collection.

How the MCU temperature alarm is generated and how to handle it?
Generally, temperature alarms are generated because of poor heat dissipation of the MCU. You are advised to periodically clean the dust filter and check whether the fans run properly and ensure that the equipment room is ventilated and has good heat dissipation devices such as air conditioners.

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