Apache Hadoop 0.18.1 Release Notes

These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.

In case of quota failure on HDFS, rename does not restore source filename.

HOD client was modified to roll over client logs being written to the cluster directory. A new configuration parameter, hod.log-rollover-count, was introduced to specify how many rollover log files to retain.