trait ExternalCommandRunner extends AnyRef
An interface to execute an arbitrary string command inside an external execution engine rather than Spark. This could be useful when user wants to execute some commands out of Spark. For example, executing custom DDL/DML command for JDBC, creating index for ElasticSearch, creating cores for Solr and so on.
This interface will be instantiated when end users call SparkSession#executeCommand.
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- @Unstable()
- Source
- ExternalCommandRunner.java
- Since
3.0.0
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- abstract def executeCommand(command: String, options: CaseInsensitiveStringMap): Array[String]
Execute the given command.
Execute the given command.
- command
The command string provided by users.
- options
The user-specified case-insensitive options.
- returns
The output of the command.
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(Since version 9)