Oracle Big Data SQL queries will run on the Hadoop cluster as the owner of the Oracle Database process (i.e. theoracleuser). Therefore, theoracleuser needs a valid Kerberos ticket in order to access data. This
Since data in the Hadoop HDFS file system is stored in an undetermined format, SQL queries require some constructs to parse and interpret data for it to be processed in rows and columns. Oracle Big Data SQL leverages available Hadoop constructs to accomplish this, notably InputFormat and SerDe...
You can run Db2 Big SQL queries from a command line interface, the Db2 Big SQL console, and from client applications that use JDBC or ODBC drivers.
Oracle Cloud SQL, an available add-on service, enables customers to initiate Oracle SQL queries on data in HDFS, Kafka, and Oracle Cloud Infrastructure Object Storage. Any user, application, or analytics tool can work transparently with these data stores, using push-down, scale-out processing to...
Cloudera Manager view with all roles showing red Big Data SQL queries against Hive tables on the Big Data Appliance may return errors similar to this example: SQL> ERROR at line 5: ORA-29913: error in executing ODCIEXTTABLEOPEN callout ORA-29400: data cartridge error KUP-11504: error from ...
Start the CLI to connect to the server and run SQL queries: client/trino-cli/target/trino-cli-*-executable.jar Run a query to see the nodes in the cluster: Run a query against the TPCH connector: SELECT * FROM tpch.tiny.region; ...
While these systems imply certain limitations over traditional data management and file systems, they serve their purpose well to handle data that have never been modified (immutable) but only appended. For example, with Hive (Thusoo et al., 2009), SQL queries can be executed on files stored...
How can I monitor if distributed queries are actually using the compute pool? You can use the existing PolyBase DMVs that were enhanced for Big Data Cluster scenarios. For more information, seeMonitor and troubleshoot PolyBase. Is it possible to configure and manage Big Data Cluster resources dir...
本练习需以下3个SQL文件 GOSALESDW_ddl.sql GOSALESDW_drop.sql GOSALESDW_load.sql 将样例SQL文件上传至HDFS hdfs dfs -put $BIGSQL_HOME/samples/queries /user/bigsql/bi_sample_data 本练习只需要执行以下语句装载相关数据 hdfs dfs -put $BIGSQL_HOME/samples/data/GOSALESDW.DIST_INVENTORY_FACT.txt/...
Table API enables the usage of SQL queries over the data. They are being easily embedded on both the DataStream and DataSets APIs and support the use of relational operators like selection, aggregations, and joins. • Flink ML can be used for performing ML tasks over the DataSet API. It ...