Release Notes

WD Fusion Hive Metastore plugin 1.1 Build 0xxx - 2 August 2016

Available Packages

WD Fusion currently supports the following versions of Hadoop:

• CDH 5.3.x
• CDH 5.4.x
• HDP 2.2.x
• HDP 2.3.x

System Requirements

Before you install this software you must ensure that you meet the necessary system, software and hardware requirements for running WD Fusion.
See a full checklist in our online user guide: docs.wandisco.com/bigdata/wdfusion/

Supported Hadoop Packages:

Installation

You can find detailed instructions on how to get up and running in our online user guide:
- docs.wandisco.com/bigdata/wdfusion/install.html#procedure

Known Issues

• WD Hive Metastore and WD Hive Fusion Plugin version 1.1 does not currently support replication between different Hadoop distributions or distribution versions. FUI-3325
• [Fixed in 2.9.0.1] There is a known issue that may appear if Hive contains two indexes that have the same name that then apply to a column of the same name (even though the indexes apply to different tables in different databases). In this scenario, repairs will fail. You should perform the following workaround. FUI-3272

WD Fusion Hive Metastore plugin 1.0 Build 0028 - 16 June 2016

Known Issues

• Hive transactions not supported.
• Hive SQL Standard Based Authorization (which provides column-level access control granularity) is not supported, because this mode requires that HiveServer2 runs embedded metastore.
• Replication between different versions not supported (some combinations might work, but need to be specifically tested).
• Table directories have to be under the database directory (or at least in the same replicated directory as the database).
• From CDH version 5.5 onwards, the password to the metastore database is encrypted in the config file. As we are unable to read the password, a workaround is required during the installation. See Steps to fix the Hive Metastore database password file.
• A rounding error can some specific cases result in a Consistency Repair to reporting either negative time taken, or succesful completion with 100% remaining. FUS-2492
• There is an issue that prevents the Hive consistency check's repair tool from repairing individual table elements (i.e. Indexes or partitions). The repair of full tables works as expected. FUI-3322


• [Fixed in 2.9] There is currently a bug where the Consistency Checker tree browser won't display children. FUI-3091
• [Fixed in 2.9] [Cloudera-based deployements] When installing the Hive Metastore plugin, you must create a folder /etc/wandisco/hive on the Metastore host that you specify. This folder must have owner hive:hive and the hive user must be able to access and write to this location. FUI-3121