working with hadoop scheduler

I am trying to improve hadoop scheduler, but don't know where to start. I am trying to create scheduler for heterogeneous environment. FairScheduler class extends taskscheduler which is abstract class. So for creating plugable scheduler do I have to extend task scheduler and start overwriting the

[jira] [Created] (HADOOP-7751) rpm version is not being picked from the -Dversion option in 205

rpm version is not being picked from the -Dversion option in 205 Key: HADOOP-7751 URL: https://issues.apache.org/jira/browse/HADOOP-7751 Project: Hadoop Common Issue Type: Bug

Re: Is there a good way to see how full hdfs is

/** Return the disk usage of the filesystem, including total capacity, * used space, and remaining space */ public DiskStatus getDiskStatus() throws IOException { return dfs.getDiskStatus(); } DistributedFileSystem has the above API from java API side. Regards, Uma - Original Mess

Build failed in Jenkins: Hadoop-Common-trunk #197

See Changes: [szetszwo] HDFS-2439. Fix NullPointerException in webhdfs when opening a non-existing file or creating a file without specifying the replication parameter. [mahadev] MAPREDUCE-3057. Job History Server goes of OutOfMem