Changelog

Major enhancement

Install from java.sun.com installation method for JDK tools has been moved to a new JDK Tool Plugin. JENKINS-22367
It is no longer possible to rename jobs from their configuration page. Jobs now have a link in the side panel titled "Rename" that links to a page specifically dedicated to renaming jobs. JENKINS-22936
The Job/Build permission no longer implies the Job/Cancel permission. The latter needs to be granted explicitly to users who previously got it via this relationship. JENKINS-14713
Update Remoting from 3.17 to 3.20 in order to apply various performance and diagnosability improvements, such as logging warnings when anonymous classes are serialized over a Remoting channel, and allowing Jenkins core to always deserialize exceptions even if they're not allowed. To benefit from the latter improvement, Remoting needs to be updated on the agent side as well. JENKINS-49415 , JENKINS-49472 , JENKINS-48561 , JENKINS-49994 , JENKINS-49618 , full changelog
Developer: JEP-202: Extend VirtualFile API to streamline external artifact storage. API additions are marked beta and may change at any time. JEP-202, pull 3302
Developer: Subclasses of AbstractItem can implement AbstractItem#isNameEditable and return true to get automatic support for renames. Subclasses are also able to dynamically validate renames by implementing AbstractItem#checkRename. JENKINS-22936

Major bug fix

Fix issue preventing process killing vetoes being effective on agents. JENKINS-9104 , ProcessKillingVeto extension point implementations

Enhancement

Pipeline builds could not be started if the Authorize Project plugin was configured to associate the build with a user to whom the authorization strategy was configured to deny Agent/Build permission on the built-in node. JENKINS-46652
archiveArtifacts in a Pipeline failed to throw a normal exception when there were no matches. JENKINS-47142
Allow use of lists of options as provided by the Pipeline snippet generator for choice parameters. JENKINS-26143
Default Crumb Issuer proxy compatibility can be enabled on first startup by setting the system property jenkins.model.Jenkins.crumbIssuerProxyCompatibility to true on startup. JENKINS-50767 , Jenkins features controlled by system properties
Introduce hudson.triggers.SafeTimerTask.logsTargetDir system property to write logs usually written to $JENKINS_HOME/logs to another location. JENKINS-50291
Remove the options to define custom Build Record Root Directory and Workspace Root Directory on the Configure System form to prevent unexpected failures during runtime. Instead, these locations can now be customized using system properties on startup. JENKINS-50164 , Jenkins features controlled by system properties
Use case-insensitive autocompletion for item selection dialogs if the current user prefers case-insensitive search. JENKINS-38812
Better autocompletion for loggers supporting multiple tokens and proposing useful parent loggers. pull 3345
Show more entries in the search results dropdown and search results page. JENKINS-47020
Ensure as much as possible that the Jenkins root URL is defined by adding a new setup wizard page and an administrative monitor. JENKINS-31661
Add agent symbol for a permanent agent in Structs Plugin based configuration. JENKINS-49661
Issue warnings to the system log when attempts are made to use classes with unpredictable names and serial forms (such as anonymous classes) in Remoting or XStream (de)serialization. JENKINS-49795
Update Winstone from 4.1.2 to 4.2 to update Jetty from 9.4.5 to 9.4.8 for various bugfixes and improvements. full changelog, Jetty 9.4.6 changelog, Jetty 9.4.7 changelog, Jetty 9.4.8 changelog
Internal: Choose more mnemonic artifactIds for modules not consumed externally. pull 3311

Bug fix

Archiving artifacts now preserves file permissions and last modification time. JENKINS-13128
Prevent some cases of linkage errors relating to Servlet classes when code is run on an agent. JENKINS-46386
Make the logic for adding nodes atomic, so that if a newly added node fails to be persisted it will not exist in a partly-initialized state. JENKINS-50599
Update WinP from 1.25 to 1.26 to fix loading of WinP libraries on Windows inside Weblogic web container. JENKINS-48347 , full changelog

Changelog for 2.121.1