apache pig - Maintaining Order of data in Pig Script -


मान लें कि मेरे पास निम्न पीआईजी स्क्रिप्ट है 

  record = LOAD 'input' का प्रयोग PigStorage ('\ T') के रूप में (आईडी, नाम, आयु); आदेश दिया गया रेकार्ड = आयु आयु एएससी द्वारा रिकॉर्ड; FinalRecord = FOREACH का आदेश दिया गया रिकार्ड आईडी, नाम; संग्रहित रिकॉर्ड्स = LIMIT अंतिम रेकार्ड 1000; स्टोर में संग्रहित रिकॉर्ड्स में 'आउटपुट';

मुझे पता है कि आदेश दिया गया आदेश उम्र के आधार पर सॉर्ट किया जाएगा, लेकिन जब मैंने आदेश दिया रेकार्ड से आयु निकाल दी है, तब भी डेटा क्रमबद्ध क्रम में है मैं सिर्फ 1000 डेटा बिंदुओं को सिर्फ आईडी और उम्र के आधार पर सॉर्ट करना चाहता हूं।

नहीं, यह मेरी समझ के अनुसार सॉर्ट किया जा सकता है लेकिन इसकी गारंटी नहीं है।

जैसा कि आप जानते हैं कि आप इस डेटा को आगे बढ़ाने की प्रक्रिया करते हैं, तो आप ऑर्डर खो देंगे। इसलिए यह गारंटी नहीं है कि आपका डेटा क्रमबद्ध रहेगा लेकिन इसके शेष आदेशों की संभावना अभी भी मौजूद है।


Comments

Post a Comment

Popular posts from this blog

eclipse plugin - Run java code error: Workspace is closed -

To create an automated project, I created a plug-in project with the following dependencies: Org.eclipse.core.resources org.eclipse.equinox.registry org.eclipse.core.runtime and the following The Java class is located in the src folder: Package Examiner; Import org.eclipse.core.resources.IProject; Import org.eclipse.core.resources.IWorkspaceRoot; Import org.eclipse.core.resources.ResourcesPlugin; Import org.eclipse.core.runtime.CoreException; Import org.eclipse.core.runtime.IProgressMonitor; Import org.eclipse.core.runtime.NullProgressMonitor; Public class tes {public static zero main (string [] args) {// TODO auto generated method stub IProgressMonitor progress monitor = new NullProgressMonitor (); IWorkspaceRoot root = ResourcesPlugin.getWorkspace (). GetRoot (); Ipoject project = root.jetproject ("desired projectname"); Try {Project.create (progress monitor); Project.open (progressMonitor); } Grip (CoreException E) {// TODO Auto generated blocking block e....
Read more

ios - How do I use CFArrayRef in Swift? -

I am using Objective-class in my Swift Project through a bridging header. The method signature looks like this: - Some cement (some type) some parameters; I started by getting an example of class, calling method, and storing the value: var myInstance = MyClassWithThatMethod (); Var cfArr = myInstance.someMethod (some value); Then try to get the value in the array: var valueInArrayThatIWant = CFArrayGetValueAtIndex (cfArr, 0); However, I get the error unmanaged & lt; Cfarray & gt; Not like 'CFArray' . Unmanaged & lt; Cfarray & gt; also means? I looked, but I do not need to change the array in a fast array (though it would be good). I need to be able to get value from the array. I also tried CFArray method to pass in a function: func doSomeStuffOnArray (myArray: NSArray) {} Although I get the same error when using: doSomeStuffOnArray (cfArr); // unmanaged & lt; CFArray & gt; I am using CFArray because I want to sto...
Read more

scala - Play Framework - how to bind form to a session field -

Is there any way, I can get some parameters from the header, cookies (log in userId in my case) , And then apply it in a form which I know who will deposit the ticket? SupportForm supportForm: form [supportTicket] = form (mapping ("question" -> text, "priority" -> text) (apply support ticket. (HelpText.update) What are the good practices here? What is the call to apply the request, when I can use it (and also a good practice?) Edit An issue, absolutely deceiving anyone if I were to create a hidden area with this value. It could Ript, but the issue may be re-used in any way to verify and return the form, it can not be sure how it ....
Read more