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Stored procedures
hdfsCopyFrom (Function)
In French: hdfsCopieDepuis
Copies a file found on a Hadoop server to the local computer.
Example
// Connection
MyConnection is hdfsConnection
MyConnection..namenode = "MyServer"
MyConnection..User = "Admin"
hdfsOpenConnection(MyConnection)
// Copy from the server to the local computer
hdfsCopyFrom(MyConnection, "/tmp/test.data", "c:\temp\test.data")
Syntax
<Result> = hdfsCopyFrom(<Connection> , <Source File> , <Destination File> [, <Progress Bar>])
<Result>: Boolean
  • True if the copy was performed,
  • False if a problem occurred. ErrorInfo is used to identify the error.
<Connection>: hdfsConnection variable
Name of hdfsConnection variable corresponding to the connection to the Hadoop server.
<Source File>: Character string (with quotes)
Absolute path of the file found on the Hadoop server. This path is case sensitive.
<Destination File>: Character string (with quotes)
Path of the local file corresponding to the destination (up to 260 characters). This parameter can correspond to:
  • a file name. This file will be automatically created in the current directory (returned by fCurrentDir).
  • a file name with its full or relative path. A UNC path can be used.
<Progress Bar>: Optional character string (with or without quotes)
Name of the Progress Bar control used to see the progress of file retrieval.
WEBDEV - Server code This parameter is not available.
Components
WINDEVWEBDEV - Server codeReports and Queries wd230big.dll
Linux wd230big.so
Minimum required version
  • Version 21
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