This is the 3rd 'developer preview' edition of Couchbase Server 2.0.
New Features and Behaviour Changes in 2.0.0DP3
Status bars have been added to show view building and rebalance progress.
The admin Web Console includes a document viewing and editing interface.
For more information, see Section 6.6, “Using the Document Editor”.
The Couch API REST port has been changed from 5984 to 8092. Applications using 5984 for view creation and basic create, read, update, and delete operations need to be updated to use the updated port.
Tags: important, incompatible, network
Major performance and stability improvements when merging views across multiple nodes.
Major performance improvements when writing and persisting data to disk from memory.
Unclassified
Couchbase Server would fail to start on Windows Server 2008 64-bit platform.
Issues: MB-4380; Tags: installer, windows
During the warm-up process when the server is first starting and
loading items, ep-engine could fail with an
assertion error.
Issues: MB-4513
Querying a view when deleting items and performing a rebalance simultaneous leads to invalid results.
Issues: MB-4518
memcached could crash while rebalancing a large number of nodes with a very high number of items.
Issues: MB-4394
When running the view tests on Windows, Couchbase Server could hang and fail to return any values.
Issues: MB-4515
The resident ratio of items could report a negative number of items.
Issues: MB-4340
The JSON encoding system within the view indexing module could over escape double quotes within embedded values.
Issues: MB-4511
Installation and Upgrade
It is not possible to perform an upgrade between Couchbase Server 2.0 pre-releases including beta, or to perform an offline upgrade from Couchbase Server 1.8 to a pre-release or beta of Couchbase Server 2.0. To upgrade between these versions use cbbackup to backup your data, delete the existing installation, install the new version, and restore the stored data.
For more information, see Section 5.6, “Backup and Restore”, Appendix B, Uninstalling Couchbase Server.
Documents identified as Non-JSON stored within Couchbase Server may appear as binary, or text-encoded binary data within the UI.
Issues: MB-7069
During periods of moderate CPU load on the Couchbase Server
cluster, you may see warnings that IP address seems to
have changed. Unable to listen to node X.X.X.X.
Command-line Tools
The cbbackup, cbrestore,
and cbtransfer command-line tools require the
zlib module for Python to have been
installed. If Python was installed from source, you must have
enabled zlib using the
--with-zlib option during the build process.
Issues: MB-7256
For more information, see Section 5.6, “Backup and Restore”, Appendix B, Uninstalling Couchbase Server.
Unclassified
Querying a view when deleting items and performing a rebalance simultaneous leads to invalid results.
Issues: MB-4518
View queries return "inconsistent state" error after a failover and rebalance operation.
Issues:
Rebalancing can cause memcached to fail with error status 255.
Issues:
Query results from views may be incorrect when the topology of the cluster changes.
It is not possible up create a bucket with uppercase letters in the bucket name.
Issues: MB-4265
Accessing a view using a reduce could report different counts from different nodes after a cluster has been rebalanced with the addition of new nodes.
Issues: MB-4500