HBase 0.98.9-1503 Release Notes

You may also be interested in the Apache HBase release notes for v0.98.9.

Version 0.98.9-mapr-1503
Release Date March 27, 2015
MapR Version Compatibility See Ecosystem Support Matrix.
Source on GitHub https://github.com/mapr/hbase
GitHub Release Tag 0.98.9-mapr-1503
Maven Artifacts http://repository.mapr.com/maven/

New in This Release

  • C APIs for HBase are supported by MapR Database in MapR version 4.1.
  • HBase Rest Gateway Server can be deployed as a pluggable service on MapR version 4.0.1 or higher.
  • HBase 0.98.9 introduces the HBaseAdmin.truncateTable() API. In this MapR release of HBase, the HBaseAdmin.truncateTable() API is also supported for MapR Database tables with MapR version 4.0.1 or higher.
  • The performance test utility for libhbase includes support for Zipfian and uniform random key generation. It also runs a performance test for scans.
Note: The HTable.checkAndMutate() API is not supported by MapR Database.

Apply the latest 4.x EBF patch if you want to use HBase replication. Contact Customer Support for details.


This release by MapR includes the following fixes on the base Apache release. For complete details, refer to the commit log for this project in GitHub.

Commit Date (YYYY-MM-DD) Comment
7f86d82 2015-01-28 MAPR-16493: ImportFiles command no longer fails with the following error:
java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hadoop.hbase.mapreduce.HFileOutputFormat
3ecea99 2015-01-29 MAPR-16948: To avoid data loss, speculative execution is now disabled for CopyTable jobs.
a1d4d58 2015-02-03 MAPR-17043: To increase performance, PutCombiner is disabled for ImportTsv jobs.
cff5b9a 2015-02-04 MAPR-17057: list_perm command no longer fails with the following error: ERROR: Security features for MapR tables are not available in this version.
51a3973 2015-02-10 MAPR-17122: CopyTable does not fail for MapR Database tables.
dd61dc4 2015-02-10 MAPR-16750: CopyTable supports bulkload mode for MapR Database tables. However, the user must reset the the bulkload attribute on the MapR Database table after running the CopyTable utility.
e00abd0 2015-02-10 HBASE-13009: The HBase REST UI is accessible.