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What if we want to execute 2 actions concurrently on different RDD’s, Spark actions are always synchronous. Like if we perform two actions one after o... 阅读全文
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原文链接The logging model used by Dynamo provides a flexible mechanism for setting up complex application logging rules. With a combination of filters and... 阅读全文
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1.Log on to the user account that you want to create this task to run for.2.Open the Start Menu, then typetaskschd.mscin the search box and press ente... 阅读全文
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原文链接/* ------------------------------------------------------------------------- *//* * An implementation of JNI methods in com.vladium.utils.SystemIn... 阅读全文
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source linkLet's look at two different ways to compute word counts, one usingreduceByKeyand the other usinggroupByKey:val words = Array("one", "two", ... 阅读全文
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原文链接Scala Option[T] is a container for zero or one element of a given type. An Option[T] can be eitherSome[T]orNoneobject, which represents a missing ... 阅读全文