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Albert Cheng's blog.
我rdd的持久化级别用了.persist(StorageLevel.OFF_HEAP());,两个参数
--conf spark.memory.offHeap.enabled=true
--conf spark.memory.offHeap.size=15g
我看了spark ui,数据全部存在off-heap内存,是够用的,executor内存:
--executor-memory 10g,为什么还会报executor内存不足?按理说我存储数据是用off-heap内存了,on-heap内存足够当做计算内存用了啊
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