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Event Store 4.0.2 Release Candidate 1

  |   Written by: Hayley Campbell   |   Release Notes

The first release candidate for Event Store 4.0.2 is now available! It is available for the following operating systems:

  • Windows (via Chocolatey)
  • Ubuntu 16.04 (via packagecloud)
  • Ubuntu 14.04 (via packagecloud)

Our focus has remained on projections following them becoming a supported feature in Event Store. This release includes numerous fixes and performance improvements for projections.

Event Store Server 4.0.2 RC 1 release notes

Event Store Server

  • #1265 - (All Platforms) - Add functionality to parse Dictionaries via Rags
  • #1277 - (All Platforms) - Correctly convert the subscription confirmations
  • #1280 - (All Platforms) - Revert to legacy queued handler.
  • #1282 - (Mono) - Reduce CPU usage of idling Event Store on mono
  • #1287 - (All Platforms) - Improve GetHashCode
  • #1336 - (All Platforms) - Remove unnecessary logging filling up client’s log files
  • #1369 - (All Platforms) - Limit pending send bytes and drop messages to closed connections
  • #1298 - (All Platforms) - Remove PAdmin in favor of the ES CLI

Event Store Server - Projections

  • #1272, #1312 - (All Platforms) - Disallow the deletion of System Projections
  • #1273 - (All Platforms) - Support any valid json as partition state
  • #1279 - (All Platforms) - Handle all messages in queue even if a consumer throws an error
  • #1281 - (All Platforms) - Partition should handle empty string as simple state
  • #1299 - (All Platforms) - Safe guard collection causing “Collection was modified when running projections” errors
  • #1303 - (All Platforms) - Fix cases where projections are just buffering
  • #1305 - (All Platforms) - Projection Processing Phase can be null
  • #1307 - (All Platforms) - Add additional logging for failure conditions
  • #1309 - (All Platforms) - Improve multi stream reader feedback loop
  • #1314 - (Windows) - Fix projection compilation timeout on Windows
  • #1325 - (All Platforms) - Change how registered projections are read to prevent deleted projections coming back to life
  • #1326 - (All Platforms) - Add ‘fromCategories’ helper
  • #1338 - (All Platforms) - Checkpoint after a certain period
  • #1346 - (All Platforms) - Time out reads in the ProjectionManagerResponseReader
  • #1351 - (All Platforms) - Dont allow the checkpoint to be enabled for a one time projection as
  • #1357, #1356, #1360 - (All Platforms) - Make use of the idempotency checks when attempting rewrites
  • #1359 - (All Platforms) - Replace strings with constants
  • #1368 - (All Platforms) - Handle read timeouts during projection recovery
  • #1370 - (All Platforms) - Fix projections getting stuck in preparing when a node becomes master
  • #1373 - (All Platforms) - Limit the number of inflight writes per projection to 1
  • #1374 - (All Platforms) - Expose config options for projections

Event Store Server - Persistent Subscriptions

  • #1302 - (All Platforms) - Fix checkpoint bug where events could be skipped

Event Store UI

  • (https://github.com/EventStore/EventStore.UI/pull/154) - Allow read/update of projection config

Embedded client

  • #1266 - (All Platforms) - Fix acking for embedded persistent subscriptions

.NET Client

  • #1285 - (All Platforms) - Allow use name of catch-up subscription in connection verbose logging
  • #1262 - (All Platforms) - Add client API for executing queries and awaiting results
  • #1310, #1323 - (All Platforms) - Support async OnEventAppeared for subscriptions
  • #1365 - (All Platforms) - Fix memory leak in ReadEventsInternalAsync for subscriptions

Where can I get the release candidate 1 packages?

The alpha packages can be installed using the following instructions.

Ubuntu 14.04/16.04 (via packagecloud)

curl -s https://packagecloud.io/install/repositories/EventStore/EventStore-OSS-PreRelease/script.deb.sh | sudo bash
sudo apt-get install eventstore-oss=4.0.2-rc1

Windows (via Chocolatey)

choco install eventstore-oss -version 4.0.2-rc1 -pre

Client Packages (via Nuget)

Install-Package EventStore.Client -Pre

How do I provide feedback?

We appreciate any feedback via either GitHub Issues or Google Groups.


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