Accessing igfs file through java

[Sateesh Karuturi <sa...@gmail.com>]

Hello experts,
I am new to the Apache Ignite , and i need to access igfs file through java.
Till now what i tried is :

import java.io.InputStream;

import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteFileSystem;
import org.apache.ignite.Ignition;
import org.apache.ignite.igfs.IgfsPath;

public class Ignite_Spark {

public static void main(String[] args) throws Exception {
Ignite ignite =
Ignition.start("/usr/local/hadoop/apache-ignite-hadoop-1.6.0-bin/config/default-config.xml");
Ignite ignites = Ignition.ignite();

IgniteFileSystem fs = ignites.fileSystem("igfs");

IgfsPath workDir = new IgfsPath("igfs://localhost:8020/ignite/fs");
fs.mkdirs(workDir);


IgfsPath filePath = new IgfsPath(workDir, "ttypes.csv");

try (InputStream in = fs.open(filePath)) {
in.read();
}
}

}


But getting  java.lang.IllegalArgumentException: Path should be absolute:
igfs://localhost:8020/ignite/fs exception.
anyone please help me out.
Thanks .

Re: Accessing igfs file through java

[Jörn Franke <jo...@gmail.com>]

You need to configure the igfs in the HDFS configuration file. Then you use the standard APIs to access HDFS files and it will go automatically through the cache.

> On 4 Oct 2016, at 07:35, Sateesh Karuturi <sa...@gmail.com> wrote:
> 
> Hello experts, 
> I am new to the Apache Ignite , and i need to access igfs file through java.
> Till now what i tried is :
> 
> import java.io.InputStream;
> 
> import org.apache.ignite.Ignite;
> import org.apache.ignite.IgniteFileSystem;
> import org.apache.ignite.Ignition;
> import org.apache.ignite.igfs.IgfsPath;
> 
> public class Ignite_Spark {
> 
> 	public static void main(String[] args) throws Exception {
> 		Ignite ignite = Ignition.start("/usr/local/hadoop/apache-ignite-hadoop-1.6.0-bin/config/default-config.xml");
> 		Ignite ignites = Ignition.ignite();
> 
> 		IgniteFileSystem fs = ignites.fileSystem("igfs");
> 
> 		IgfsPath workDir = new IgfsPath("igfs://localhost:8020/ignite/fs");
> 		fs.mkdirs(workDir);
> 
> 
> 		IgfsPath filePath = new IgfsPath(workDir, "ttypes.csv");
> 
> 		try (InputStream in = fs.open(filePath)) {
> 			in.read();
> 		}
> 	}
> 
> }
> 
> 
> But getting  java.lang.IllegalArgumentException: Path should be absolute: igfs://localhost:8020/ignite/fs exception.
> anyone please help me out.
> Thanks .
> 

Re: Accessing igfs file through java

[vkulichenko <va...@gmail.com>]

Sateesh,

IgfsPath should be a "local" path, e.g. /ignite/fs. You work with IGFS as
with a regular file system, but the data will be stored in a distributed
fashion on the cluster.

-Val



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