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Interview Questions

Interview Questions

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Browsing Category

Hive

27 posts

How to optimize Hive Performance ?

    Answer : Tez-Execution Engine in Hive – Tez is a new application….
    View Answer

    What is the difference between ‘select from table’ and ‘select column from table’ in hive ?

      Answer : Table in Hive is stored as a directory in the HDFS…
      View Answer

      What is the difference between hive view and a hive external table When should it be used ?

        Answer : When the user queries table x the query planner….
        View Answer

        What is the difference between hive and pig ?

          Answer : Hive is used by data analysts…
          View Answer

          What is the difference between Hive and HBase ?

            Answer : Hive is query engine…
            View Answer

            What is the Difference between apache hive and impala ?

              Answer : Hive generates query expressions at compile time…
              View Answer

              What is the difference between Apache Hive and Apache Spark ?

                Answer : Apache hive is a distributed query…
                View Answer

                What is the difference between a normal hive table and hive table stored as ORC ?

                  Answer : Hive data is organized into Databases….
                  View Answer

                  What is a difference between terradata SQL and Hive QL ?

                    Answer : Sql is a database however hive is not a database
                    View Answer

                    What is the Relationship Between Hadoop Hbase and Hive ?

                      Answer : Hadoop is an open source software stack that runs on a cluster of machines
                      View Answer

                      What is the location where “Hive” stores table data ?

                        Answer : The default location of the hive table is….
                        View Answer

                        What is the best way to take the back up of hive partitioned table into a disk ?

                          Answer : Partitioning is the optimization technique in Hive which improves the performance significantly.
                          View Answer

                          What is the best studio software/tool to run HIVE SQL/HQL queries by a data analyst ?

                            Answer : Hue has a Web SQL Editor with autocomplete, display of table/data samples, light graphing, query download
                            View Answer

                            What is best practice indexing hdfs data into solr using hive ?

                              Answer : Here,based on the requirement especially how typically your data gets updated, volume and architecture.
                              View Answer

                              What is the result of clustering a partitioned table in Hive ?

                                Answer : Partitioning data is used for distributing load horizontally, helps to organizing data in a very logical fashion.
                                View Answer

                                What is the version control tool for hive queries ?

                                  Answer : Functionality to write & run multiple queries concurrently for the same user in the same session it used Hive, Impala
                                  View Answer

                                  What is a tool for tuning hive queries ?

                                    Answer : By doing compression at various phases (i.e. on final output, intermediate data),we achieve performance improvement in Hive Queries.
                                    View Answer

                                    What is a map join and a bucket join in Hive ?

                                      Answer : Map join may be a little-known feature of Hive.
                                      View Answer

                                      What is the use of hive language ?

                                        Answer : Hive is often used as the interface to an Apache Hadoop based data warehouse
                                        View Answer

                                        What is DDL statement in hive ?

                                          Answer : The outline of the database schema typically change by SQL statements they are creating, deleting
                                          View Answer

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