Convert List[Map] to spark dataframe












-1














I want to convert List[Map] to a spark dataframe,the keys of
Map are sname,the keys of Map are DataFrame's columns






apache-spark apache-spark-sql







share|improve this question



























    -1














    I want to convert List[Map] to a spark dataframe,the keys of
    Map are sname,the keys of Map are DataFrame's columns






    apache-spark apache-spark-sql







    share|improve this question

























      -1












      -1








      -1







      I want to convert List[Map] to a spark dataframe,the keys of
      Map are sname,the keys of Map are DataFrame's columns






      apache-spark apache-spark-sql







      share|improve this question













      I want to convert List[Map] to a spark dataframe,the keys of
      Map are sname,the keys of Map are DataFrame's columns






      apache-spark apache-spark-sql




      apache-spark apache-spark-sql






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 23 at 8:59









      user7687835

      349




      349
























          1 Answer
          1






          active

          oldest

          votes


















          0














          Here you can do this way



          val map1 = {"a"->1}
          
val map2 = {"b"->2}
          
val lst = List(map1,map2)
          
val lstDF = lst.toDF
          
lstDF.take(2).foreach(println)





          share|improve this answer























            Your Answer






            StackExchange.ifUsing("editor", function () {
            StackExchange.using("externalEditor", function () {
            StackExchange.using("snippets", function () {
            StackExchange.snippets.init();
            });
            });
            }, "code-snippets");

            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "1"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53443444%2fconvert-listmapstring-string-to-spark-dataframe%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            Here you can do this way



            val map1 = {"a"->1}
            
val map2 = {"b"->2}
            
val lst = List(map1,map2)
            
val lstDF = lst.toDF
            
lstDF.take(2).foreach(println)





            share|improve this answer




























              0














              Here you can do this way



              val map1 = {"a"->1}
              
val map2 = {"b"->2}
              
val lst = List(map1,map2)
              
val lstDF = lst.toDF
              
lstDF.take(2).foreach(println)





              share|improve this answer


























                0












                0








                0






                Here you can do this way



                val map1 = {"a"->1}
                
val map2 = {"b"->2}
                
val lst = List(map1,map2)
                
val lstDF = lst.toDF
                
lstDF.take(2).foreach(println)





                share|improve this answer














                Here you can do this way



                val map1 = {"a"->1}
                
val map2 = {"b"->2}
                
val lst = List(map1,map2)
                
val lstDF = lst.toDF
                
lstDF.take(2).foreach(println)






                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Nov 23 at 11:32









                Srce Cde

                1,136511




                1,136511










                answered Nov 23 at 10:20









                H Roy

                11416




                11416






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Stack Overflow!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid …



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.





                    Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


                    Please pay close attention to the following guidance:


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid …



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53443444%2fconvert-listmapstring-string-to-spark-dataframe%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    -

                    Popular posts from this blog

                    Contact image not getting when fetch all contact list from iPhone by CNContact

                    Image
                    up vote 0 down vote favorite I know this question already asked but not getting solution. From this code I will get all the information from the contact but image not found when open vcf files on mac os, also not getting when share this file. I use this stackoverflow link here but It's not help full. var contacts = [CNContact]() let keys = [CNContactVCardSerialization.descriptorForRequiredKeys() ] as [Any] let request = CNContactFetchRequest(keysToFetch: keys as! [CNKeyDescriptor]) do { try self.contactStore.enumerateContacts(with: request) { (contact, stop) in // Array containing all unified contacts from everywhere contacts.append(contact) } } catch { print("unable to fetch contacts") } do { let data = try
                    Read more

                    count number of partitions of a set with n elements into k subsets

                    Image
                    up vote 6 down vote favorite 1 This program is for count number of partitions of a set with n elements into k subsets I am confusing here return k*countP(n-1, k) + countP(n-1, k-1); can some one explain what is happening here? why we are multiplying with k? NOTE->I know this is not the best way to calculate number of partitions that would be DP // A C++ program to count number of partitions // of a set with n elements into k subsets #include<iostream> using namespace std; // Returns count of different partitions of n // elements in k subsets int countP(int n, int k) { // Base cases if (n == 0 || k == 0 || k > n) return 0; if (k == 1 || k == n) return 1; // S(n+1, k) = k*S(n, k) + S(n, k-1) return k*countP(n-1, k) + countP(n-1, k-1); } // Driver program int ma
                    Read more

                    A CLEAN and SIMPLE way to add appendices to Table of Contents and bookmarks

                    Image
                    0 I found a lot of questions abount appendices and ToC. Many users want appendices to be grouped in an Appendix part, however some problems arise with ToC, hyperref, PDF viewer bookmarks, and so on. There are different solutions which require extra packages, command patching and other extra code, however none of them satisfies me. I almost found an easy way to accomplish a good result, where appendices are added to bookmarks in the right way and hyperref links point to the right page. However, the number of the "Appendix" part page is wrong (it's the number of appendix A). Is there any EASY way to fix that? This is a MWE: documentclass{book} usepackage[nottoc,notlot,notlof]{tocbibind} usepackage{hyperref} begin{document} frontmatter tableofcontents mainmatter part{First} chapter{
                    Read more