v0.15.0
Changes from 0.14.0 to 0.15.0
Recommended Mesos version is 0.26.0
We tested this release against Mesos version 0.26.0. Thus, this is the recommended Mesos version for this release.
Overview
Integration of Mesos Fetcher Cache
The v2 REST API was extended to support the Mesos fetcher cache. This allows users to configure a list of resource URIs that will be copied into the task sandbox prior to running the task, from either a local or external location. For details on the fetcher cache's capabilities, please see the fetcher cache documentation.
Migration from Marathon version 0.7 or lower removed
It is no longer possible to migrate from Marathon versions prior to version 0.8. If you want to upgrade old versions we recommend to do a step by step migration using the latest stable version following your installed version and so on.
haproxy-marathon-bridge is deprecated and removed from the bin directory
In recent versions we published a simple shell script to update haproxy configuration. The script can still be found in the examples directory. marathon-lb is the successor of this script.
Under the Hood
There have been a lot of interesting changes which we only summarize for now. In the next days, we will follow up with extend documentation about them.
New metrics
We added a bunch of important metrics and documentation on the /metrics endpoint and fixed measuring some existing metrics.
Limit concurrent status update processing
We now limit the maximum number of concurrently processed task status updates. If the limit is reached, further status updates are queued. The queue is limited, too, so that at some point new status updates are rejected and not acknowledged. Eventually, Mesos will resend the status updates that we didn't process.
Task state tracking redesign
We have rewritten the component that holds the task states: the TaskTracker. We removed the old implementation that used concurrent data structures, and now use an actor based implementation. The new implementation is easier to reason about and allows explicit concurrency management as described in the last section.
Explicit queuing of application configuration updates
Marathon has been serializing updates to the app configuration for a while. We made queuing outstanding configuration requests explicit and also limited the maximum size of the queue.
Optimized /v2/tasks (TXT)
Since some service discovery solutions poll this end-point, performance is important. We improved request rates by about 30%.
Changes to the threading model
Prior to this release, Marathon would create new threads when needed. Now we switched to a model where we have some fixed size thread pools and thread pools that will only grow if too many threads have become blocked. This should reduce the number of threads under load.
Model validation
Marathon is now utilizing Accord, a modern approach to model validation which will hopefully leads to better error messages in the future.
Marathon UI
A number of very convenient features and improvements made it into this release.
Perform actions directly from the Applications list
A new contextual dropdown menu in the Applications list gives access to the most useful actions (scale, destroy, suspend, etc.) without having to enter an application's detail view. Additionally, it is now possible to perform scale and delete operations on entire Groups.
Better feedback
The feedback dialogs have been completely redesigned to be clearer and more useful, adding three possible color-coded severity levels: info, warning and error. In addition, the action button labels have been rephrased for improved usability. Buttons that may lead to dangerous actions (such as "force scale") are also not preselected by default anymore.
Application Health
The health status breakdown is now also shown in the application details page.
...and much more
For the complete set of changes, please refer to the Marathon UI CHANGELOG
Fixed issues
- #2918 - Incorrect Step-wise timers in TaskStatusUpdateProcessorImpl
- #2919 - StateMetrics.timed(Read/Write) incorrectly used for methods returning Futures
- #2951 - Incorrect Constraint lead to an application exception, but should give an error response
- #2957 - Unbounded ThreadPool is used for too many operations
- #2982 - Double offerLeadership invocation after driver failure
- #2989 - Report task count metrics
- #2868 - Marathon sometimes tries (and fails) to assign duplicated service ports
- #2938 - Don't log giant port lists
- #2855 - Create app failed when there're multiple same word in the app id
- #3051 - Can't add dynamic ports using PUT
- #3047 - Event callbacks hold on to unresponsive hosts
- #2892 - Version in task detail component shouldn't be localised
- #2893 - App page component should display the right number of tasks
- #2949 - AjaxWrapper does't handle TypeError correctly
- #3065 - Prevent ctrl-c keyboard shortcut from showing the Create modal dialog
- #3054 - Empty - non set- application attributes are accidentaly submited by the UI
- #3064 - Labels dropdown menu not showing up
- #3063 - After scaling a healthy app to 0, it appears to be Infinity% overcapacity
List of Contributors
| Commits | Contributor |
|---|---|
| 29 | Peter Kolloch |
| 14 | Gastón Kleiman |
| 9 | Matthias Eichstedt |
| 6 | Matthias Veit |
| 5 | Alexander Weber |
| 5 | Pierluigi Cau |
| 2 | Tomasz Janiszewski |
| 2 | Tobi Knaup |
| 1 | Suzanne Scala |
| 1 | avinash sridharan |
| 1 | jtrenholm |
| 1 | Adam Medziński |
| 1 | sascala |
| 1 | Brenden Matthews |
| 1 | Christopher M Luciano |
| 1 | David Bayendor |
| 1 | Justin Good |
| 1 | Mateusz Gajewski |
| 1 | Philip Norman |
| 1 | Philipp Hinrichsen |
Generated by git shortlog -s -n --no-merges v0.14.1..v0.15.0 for the Marathon repository
Downloads
Tarball:
http://downloads.mesosphere.com/marathon/v0.15.0/marathon-0.15.0.tgz
SHA:
http://downloads.mesosphere.com/marathon/v0.15.0/marathon-0.15.0.tgz.sha256
Docker:
https://registry.hub.docker.com/u/mesosphere/marathon with tag v0.15.0
Packages are also available via the Mesosphere repositories.
See: https://mesosphere.com/blog/2014/07/17/mesosphere-package-repositories/