I have downloaded and configured HDP_2.6.5_virtualbox_180626, I am able to connect  and  upload files to HDFS and can access the files data using Hive.   To access the data from HDFS files using SQL Server (PolyBase), i have configured the External table and File Table  CREATE DATABASE SCOPED CREDENTIAL Hadoop_Cred WITH IDENTITY = 'raj_ops', Secret = 'raj_ops'; GO CREATE EXTERNAL DATA SOURCE MyHadoopCluster WITH ( TYPE = HADOOP, LOCATION ='hdfs://192.168.0.107:8020', CREDENTIAL = Hadoop_Cred ); DROP EXTERNAL FILE FORMAT Hadoop_file_format CREATE EXTERNAL FILE FORMAT Hadoop_file_format WITH ( FORMAT_TYPE = DELIMITEDTEXT, FORMAT_OPTIONS ( FIELD_TERMINATOR =',', USE_TYPE_DEFAULT = TRUE ) )   CREATE EXTERNAL TABLE [dbo].HDFS_File ( street varchar(100), city varchar(100), zip varchar(100), [state] varchar(100), beds int, baths int, sq__ft varchar(100), [type] varchar(100), sale_date varchar(100), price varchar(100), latitude varchar(100), longitude varchar(100) ) WITH ( LOCATION = N'/user/raj_ops/TP/', DATA_SOURCE =MyHadoopCluster, FILE_FORMAT =Hadoop_file_format, REJECT_TYPE = VALUE, REJECT_VALUE = 0 );   On accessing the table , i am getting the following error Msg 7320, Level 16, State 110, Line 33 Cannot execute the query "Remote Query" against OLE DB provider "SQLNCLI11" for linked server "(null)".  HdfsBridge::recordReaderFillBuffer - Unexpected error encountered filling record reader buffer: BlockMissingException: Could not obtain block: BP-243674277-172.17.0.2-1529333510191:blk_1073743046_2226 file=/user/raj_ops/TP/Sacramentorealestatetransactions.csv     ... View more