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Release Notes for Couchbase Server 6.0 BETA

Couchbase Server 6.0 Beta is an important release that adds the Analytics service to Couchbase Data Platform. It also includes enhancements to the Eventing and Search services.

Take a look at What’s New? for a list of new features and improvements that are available in this release.

This Beta version is intended for development and testing purposes only. We consider Beta releases to have some rough edges and bugs, and may change significantly before the final GA release. This release is not supported in production.

The Beta release does not support upgrading from an earlier version of Couchbase Server.

Couchbase Server 6.0.0 BETA was released in August 2018.

New Supported Platforms

This release adds support for the Debian 9 platform. See Supported Platforms for the complete list of supported platforms.

Known Issues

Administration/Cluster Management

Issue Description

MB-23074

Summary: Performance issues may be observed when running Couchbase Server on CentOS 7.3 with kernel 3.10.0-514.6.

Analytics Service

Issue Description

MB-28544

Summary: The UNION ALL operation does not work for all query types. For example, a query of the form shown below is not parsed correctly.

(SELECT ... FROM ... WHERE ...)
                  UNION ALL
                  (SELECT ... FROM ... WHERE ...)

Workaround: Remove the parentheses around the first subquery block.

SELECT ... FROM ... WHERE ...
                      UNION ALL
                      (SELECT ...
                      FROM ...
                      WHERE ...)

Data Service

Issue Description

MB-29809

Summary: The last_modified can be incorrect if a bucket was upgraded and contains old documents.

Eventing Service

Issue Description

MB-30772

Summary: Killing an Eventing process externally may result in a loss of timers that have been dequeued but not run to completion.

Full-text Search Service

Issue Description

MB-27429

Summary: Scorch indexes were found to contain duplicate pindexes.

Indexing Service

Issue Description

MB-30207

Summary: An error is seen during a SUM aggregate pushdown when the entry value is greater than MaxInt64.

MB-30011

Summary: The rebalance progress in percentage during GSI swap rebalance doesn’t always increase linearly.

MB-19869

Summary: Rebalance fails when taking out failed over nodes running views, in certain circumstances.

Query Service

Issue Description

MB-29391, MB-29393

Summary: Large numeric values are reported incorrectly. For example, the modulo operation or a scan for min int64 value returns an incorrect result in case of int64.

Security

Issue Description

MB-26421

Summary: The default "administrator" user doesn’t show up in list of local users displayed on the Web Console under the Security -> Users tab.