Issue | Component | Notes |
HADOOP-3344 | build | Changed build procedure for libhdfs to build correctly for different platforms. Build instructions are in the Jira item. |
HADOOP-4253 | conf | Removed from class org.apache.hadoop.fs.RawLocalFileSystem deprecated methods public String getName(), public void lock(Path p, boolean shared) and public void release(Path p). |
HADOOP-4454 | conf | Changed processing of conf/slaves file to allow # to begin a comment. |
HADOOP-4631 | conf | Split hadoop-default.xml into core-default.xml, hdfs-default.xml and mapreduce-default.xml. |
HADOOP-4035 | contrib/capacity-sched | Changed capacity scheduler policy to take note of task memory requirements and task tracker memory availability. |
HADOOP-4445 | contrib/capacity-sched | Changed JobTracker UI to better present the number of active tasks. |
HADOOP-4576 | contrib/capacity-sched | Changed capacity scheduler UI to better present number of running and pending tasks. |
HADOOP-4179 | contrib/chukwa | Introduced Vaidya rule based performance diagnostic tool for Map/Reduce jobs. |
HADOOP-4827 | contrib/chukwa | Improved framework for data aggregation in Chuckwa. |
HADOOP-4843 | contrib/chukwa | Introduced Chuckwa collection of job history. |
HADOOP-5030 | contrib/chukwa | Changed RPM install location to the value specified by build.properties file. |
HADOOP-5531 | contrib/chukwa | Disabled Chukwa unit tests for 0.20 branch only. |
HADOOP-4789 | contrib/fair-share | Changed fair scheduler to divide resources equally between pools, not jobs. |
HADOOP-4873 | contrib/fair-share | Changed fair scheduler UI to display minMaps and minReduces variables. |
HADOOP-3750 | dfs | Removed deprecated method parseArgs from org.apache.hadoop.fs.FileSystem. |
HADOOP-4029 | dfs | Added name node storage information to the dfshealth page, and moved data node information to a separated page. |
HADOOP-4103 | dfs | Modified dfsadmin -report to report under replicated blocks. blocks with corrupt replicas, and missing blocks". |
HADOOP-4567 | dfs | Changed GetFileBlockLocations to return topology information for nodes that host the block replicas. |
HADOOP-4572 | dfs | Moved org.apache.hadoop.hdfs.{CreateEditsLog, NNThroughputBenchmark} to org.apache.hadoop.hdfs.server.namenode. |
HADOOP-4618 | dfs | Moved HTTP server from FSNameSystem to NameNode. Removed FSNamesystem.getNameNodeInfoPort(). Replaced FSNamesystem.getDFSNameNodeMachine() and FSNamesystem.getDFSNameNodePort() with new method FSNamesystem.getDFSNameNodeAddress(). Removed constructor NameNode(bindAddress, conf). |
HADOOP-4826 | dfs | Introduced new dfsadmin command saveNamespace to command the name service to do an immediate save of the file system image. |
HADOOP-4970 | dfs | Changed trash facility to use absolute path of the deleted file. |
HADOOP-5468 | documentation | Reformatted HTML documentation for Hadoop to use submenus at the left column. |
HADOOP-3497 | fs | Changed the semantics of file globbing with a PathFilter (using the globStatus method of FileSystem). Previously, the filtering was too restrictive, so that a glob of /*/* and a filter that only accepts /a/b would not have matched /a/b. With this change /a/b does match. |
HADOOP-4234 | fs | Changed KFS glue layer to allow applications to interface with multiple KFS metaservers. |
HADOOP-4422 | fs/s3 | Modified Hadoop file system to no longer create S3 buckets. Applications can create buckets for their S3 file systems by other means, for example, using the JetS3t API. |
HADOOP-3063 | io | Introduced BloomMapFile subclass of MapFile that creates a Bloom filter from all keys. |
HADOOP-1230 | mapred | Replaced parameters with context obejcts in Mapper, Reducer, Partitioner, InputFormat, and OutputFormat classes. |
HADOOP-1650 | mapred | Upgraded all core servers to use Jetty 6 |
HADOOP-3923 | mapred | Moved class org.apache.hadoop.mapred.StatusHttpServer to org.apache.hadoop.http.HttpServer. |
HADOOP-3986 | mapred | Removed classes org.apache.hadoop.mapred.JobShell and org.apache.hadoop.mapred.TestJobShell. Removed from JobClient methods static void setCommandLineConfig(Configuration conf) and public static Configuration getCommandLineConfig(). |
HADOOP-4188 | mapred | Removed Task's dependency on concrete file systems by taking list from FileSystem class. Added statistics table to FileSystem class. Deprecated FileSystem method getStatistics(Class<? extends FileSystem> cls). |
HADOOP-4210 | mapred | Changed public class org.apache.hadoop.mapreduce.ID to be an abstract class. Removed from class org.apache.hadoop.mapreduce.ID the methods public static ID read(DataInput in) and public static ID forName(String str). |
HADOOP-4305 | mapred | Improved TaskTracker blacklisting strategy to better exclude faulty tracker from executing tasks. |
HADOOP-4435 | mapred | Changed JobTracker web status page to display the amount of heap memory in use. This changes the JobSubmissionProtocol. |
HADOOP-4565 | mapred | Improved MultiFileInputFormat so that multiple blocks from the same node or same rack can be combined into a single split. |
HADOOP-4749 | mapred | Added a new counter REDUCE_INPUT_BYTES. |
HADOOP-4783 | mapred | Changed history directory permissions to 750 and history file permissions to 740. |
HADOOP-3422 | metrics | Changed names of ganglia metrics to avoid conflicts and to better identify source function. |
HADOOP-4284 | security | Introduced HttpServer method to support global filters. |
HADOOP-4575 | security | Introduced independent HSFTP proxy server for authenticated access to clusters. |
HADOOP-4661 | tools/distcp | Introduced distch tool for parallel ch{mod, own, grp}. |