4.1. Patch information for Hadoop Common/HDFS

Hadoop is based on Apache Hadoop 2.4 and includes the following additional patches:

  • HDFS-5257: addBlock() retry should return LocatedBlock with locations else client will get AIOBE

  • HDFS-5089: When a LayoutVersion supports SNAPSHOT, it must support FSIMAGE_NAME_OPTIMIZATION.

  • HADOOP-10475: ConcurrentModificationException in AbstractDelegationTokenSelector.selectToken().

  • HDFS-6160: TestSafeMode occasionally fails.

  • HDFS-6233: Datanode throws HardLink exception during upgrade from 1.3 to 2.1 in Windows.