Hi Sacha! Thanks for the quick answer. Is there a simple way to search the mailing list? by text or by author.
At http://mail-archives.apache.org/mod_mbox/hadoop-core-user/ I only see a browse per month... Thanks, Olivier On Thu, May 28, 2009 at 10:57 AM, Sasha Dolgy <[email protected]> wrote: > append isn't supported without modifying the configuration file for > hadoop. check out the mailling list threads ... i've sent a post in > the past explaining how to enable it. > > On Thu, May 28, 2009 at 2:46 PM, Olivier Smadja <[email protected]> wrote: > > Hello, > > > > I'm trying hadoop for the first time and I'm just trying to create a file > > and append some text in it with the following code: > > > > > > import java.io.IOException; > > > > import org.apache.hadoop.conf. Configuration; > > import org.apache.hadoop.fs.FSDataOutputStream; > > import org.apache.hadoop.fs.FileSystem; > > import org.apache.hadoop.fs.Path; > > > > /** > > * @author olivier > > * > > */ > > public class HadoopIO { > > > > public static void main(String[] args) throws IOException { > > > > > > String directory = "/Users/olivier/tmp/hadoop-data"; > > Configuration conf = new Configuration(true); > > Path path = new Path(directory); > > // Create the File system > > FileSystem fs = path.getFileSystem(conf); > > // Sets the working directory > > fs.setWorkingDirectory(path); > > > > System.out.println(fs.getWorkingDirectory()); > > > > // Creates a files > > FSDataOutputStream out = fs.create(new Path("test.txt")); > > out.writeBytes("Testing hadoop - first line"); > > out.close(); > > // then try to append something > > out = fs.append(new Path("test.txt")); > > out.writeBytes("Testing hadoop - second line"); > > out.close(); > > > > fs.close(); > > > > > > } > > > > } > > > > > > but I receive the following exception: > > > > Exception in thread "main" java.io.IOException: Not supported > > at > > > org.apache.hadoop.fs.ChecksumFileSystem.append(ChecksumFileSystem.java:290) > > at org.apache.hadoop.fs.FileSystem.append(FileSystem.java:525) > > at com.neodatis.odb.hadoop.HadoopIO.main(HadoopIO.java:38) > > > > > > 1) Can someone tell me what am i doing wrong? > > > > 2) How can I update the file (for example, just update the first 10 bytes > of > > the file)? > > > > > > Thanks, > > Olivier > > > > > > -- > Sasha Dolgy > [email protected] >
