ExtensionMethodsWriteWebHdfsText Method Naiad Help

[This is preliminary documentation and is subject to change.]

write a sequence of strings as hdfs text files. The collection is active throughout the computation and is closed when the computation terminates: it concatenates records from all epochs in an undefined order

Namespace: Microsoft.Research.Naiad.Frameworks.WebHdfs
Assembly: Microsoft.Research.Naiad.WebHdfsSupport (in Microsoft.Research.Naiad.WebHdfsSupport.dll) Version: 0.5.0.0 (0.5.0.0)
Syntax
C#
Copy
public static Subscription WriteWebHdfsText(
	this Stream<string, Epoch> source,
	string user,
	int webPort,
	Uri prefix,
	long blockSize = -1,
	long segmentThreshold = 266338304
)

Parameters

source
Type: Microsoft.Research.NaiadStreamString, Epoch
stream of records to write
user
Type: SystemString
hdfs user
webPort
Type: SystemInt32
webhdfs protocol port
prefix
Type: SystemUri
webhdfs directory to write the partitioned data into
blockSize (Optional)
Type: SystemInt64
hdfs block size to use, or -1 for the file system default value
segmentThreshold (Optional)
Type: SystemInt64
file size to write before closing the file and opening another one

Return Value

Type: Subscription
handle to wait on until the computation completes

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type StreamString, Epoch. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
See Also

Reference

ExtensionMethods Class
Microsoft.Research.Naiad.Frameworks.WebHdfs Namespace