Apache Hadoop Changelog

Release 1.0.1 - 2012-02-22

INCOMPATIBLE CHANGES:

JIRA Summary Priority Component Reporter Contributor
HADOOP-7470 move up to Jackson 1.8.8 Minor util Steve Loughran Enis Soztutar
HADOOP-8037 Binary tarball does not preserve platform info for native builds, and RPMs fail to provide needed symlinks for libhadoop.so Blocker build Matt Foley Matt Foley

IMPROVEMENTS:

JIRA Summary Priority Component Reporter Contributor
MAPREDUCE-3184 Improve handling of fetch failures when a tasktracker is not responding on HTTP Major jobtracker Todd Lipcon Todd Lipcon
MAPREDUCE-3607 Port missing new API mapreduce lib classes to 1.x Major client Tom White Tom White
HADOOP-7987 Support setting the run-as user in unsecure mode Major security Devaraj Das Jitendra Nath Pandey
HDFS-2814 NamenodeMXBean does not account for svn revision in the version information Minor . Hitesh Shah Hitesh Shah
HADOOP-8009 Create hadoop-client and hadoop-minicluster artifacts for downstream projects Critical build Alejandro Abdelnur Alejandro Abdelnur

BUG FIXES:

JIRA Summary Priority Component Reporter Contributor
MAPREDUCE-3343 TaskTracker Out of Memory because of distributed cache Major mrv1 Ahmed Radwan yunjiong zhao
HADOOP-7960 Port HADOOP-5203 to branch-1, build version comparison is too restrictive Major . Giridharan Kesavan Matt Foley
HADOOP-7964 Deadlock in class init. Blocker security, util Kihwal Lee Daryn Sharp
HADOOP-7988 Upper case in hostname part of the principals doesn’t work with kerberos. Major . Jitendra Nath Pandey Jitendra Nath Pandey
HADOOP-8010 hadoop-config.sh spews error message when HADOOP_HOME_WARN_SUPPRESS is set to true and HADOOP_HOME is present Minor scripts Roman Shaposhnik Roman Shaposhnik
HDFS-2379 0.20: Allow block reports to proceed without holding FSDataset lock Critical datanode Todd Lipcon Todd Lipcon
HADOOP-8052 Hadoop Metrics2 should emit Float.MAX_VALUE (instead of Double.MAX_VALUE) to avoid making Ganglia’s gmetad core Major metrics Varun Kapoor Varun Kapoor