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// Query execDML(connection,sqls[1]); // Delete the table. execDDL(connection,sqls[2]); System.out.println("Delete table success!"); } finally { // Close the JDBC connection. if (null !
// Query execDML(connection,sqls[1]); // Delete the table. execDDL(connection,sqls[2]); System.out.println("Delete table success!"); } finally { // Close the JDBC connection. if (null !
\ load(basePath) tripsPointInTimeDF.createOrReplaceTempView("hudi_trips_point_in_time") spark.sql("select `_hoodie_commit_time`, fare, begin_lon, begin_lat, ts from hudi_trips_point_in_time where fare > 20.0").show() Delete data: # Obtain the total number of records. spark.sql
// Query execDML(connection,sqls[1]); // Delete the table. execDDL(connection,sqls[2]); System.out.println("Delete table success!"); } finally { // Close the JDBC connection. if (null !
\ load(basePath) tripsPointInTimeDF.createOrReplaceTempView("hudi_trips_point_in_time") spark.sql("select `_hoodie_commit_time`, fare, begin_lon, begin_lat, ts from hudi_trips_point_in_time where fare > 20.0").show() Delete data: # Obtain the total number of records. spark.sql
\ load(basePath) tripsPointInTimeDF.createOrReplaceTempView("hudi_trips_point_in_time") spark.sql("select `_hoodie_commit_time`, fare, begin_lon, begin_lat, ts from hudi_trips_point_in_time where fare > 20.0").show() Delete data: # Obtain the total number of records. spark.sql
Check the requests and reduce the data volume of each request (reduce the data volume for Put/Delete batch requests and decrease the Caching value for Scan).
In the Permission column of the specified table, select DELETE and INSERT. Click OK. Parent topic: Spark User Permission Management
They can create tables, select, delete, insert, or update data, and grant permissions to other users to allow them to access the tables and corresponding HDFS directories and files.
In the Permission column of the specified table, select DELETE and INSERT. Click OK. Parent topic: Spark User Permission Management
If you want to view, modify, or delete a security group rule, click Manage Security Group Rule. Select the information to be confirmed and click OK. Click OK. The Manager login page is displayed.
After the bootstrap action is added, you can edit, clone, or delete it in the Operation column. Adding a Bootstrap Action to an Existing Cluster Log in to the MRS console.
Run the hdfs dfs -rm -r file or directory command to delete unnecessary files. Check whether the alarm is cleared. If yes, no further action is required. If no, go to 4. Check the NameNode JVM memory usage and configuration.
Run the hdfs dfs -rm -r file or directory path command to delete unnecessary files. Check whether the alarm is cleared. If yes, no further action is required. If no, go to 4. Check the NameNode JVM non-heap memory usage and configuration.
In this sample, a custom JDBCServer client and JDBC connections are used to create, load data to, query, and delete tables.
In this sample, a custom JDBCServer client and JDBC connections are used to create, load data to, query, and delete tables.
Delete the spark-examples_2.10-1.5.1.jar package from each server node. In the spark-defaults.conf configuration file on the client, modify (or add and modify) the parameter spark.driver.userClassPathFirst to true. Parent topic: FAQs About Spark Application Development
This indicates that only the user who creates the directory can delete it. hdfs dfs -chmod 1777 /user To ensure security of the system file, you are advised to harden the security for non-temporary directories.
----+---------------+----------------+ | 367392332 | 20201001 | 30201001 | sffa1 | 13 | | 367392332 | 20201001 | 30201001 | sffa888 | 13 | +------------+-----------+-----------+---------------+----------------+ Solution Delete
----+---------------+----------------+ | 367392332 | 20201001 | 30201001 | sffa1 | 13 | | 367392332 | 20201001 | 30201001 | sffa888 | 13 | +------------+-----------+-----------+---------------+----------------+ Solution Delete
