To install an earlier version of the JRE, you must first uninstall the current version. To determine the current JRE version installed on your system, see Determining the JRE Version Installed on macOS. However, the system will not replace the current JRE with a lower version. When you install the JDK, it also installs the JRE. Administrator privileges are required to install the JDK and JRE on macOS. Installing the JDK and JRE on macOS is performed on a systemwide basis for all users. You cannot install Java for a single user. I wonder if this is related to an upgraded macOS or if it exists on a clean install of macOS Sierra as well. The good thing is that this will apply to other applications, as well - not just Java applications.The following are the system requirements for installing the JDK and the JRE on macOS: That's one-third of the time it needed before! Not bad for a 30-minute investigation.
Now with this small change applied to my hosts file, the application starts within 19 seconds. In the end, the entries in your host file should look something like: 127.0.0.1 localhost Jeroens-MacBook-Pro.local Just use the hostname command: $ hostnameĪnd it should return something like: Jeroens-MacBook-Pro.local If you’re unsure what your hostname is, you can get it quite easily from a terminal. While inspecting my host file, I noticed it did contain both entries for resolving localhost on both IPv4 and IPv6. local domain entry for ‘localhost’ entries. All you have to do is make sure that your /etc/hosts file also contains the. Solving the problem is actually quite simple as stated in both posts. I guess I was lucky that it just took a minute on my machine. The writers of both posts have a delay up to five minutes or so, which definitely is not workable and would have pushed me to look into this problem instantly. Both posts point out a problem similar to mine: a ‘DNS problem’ with how ‘localhost’ was resolved. I just took a couple of Thread dumps and a small Google query which led me to this post on the IntelliJ forum and this post on StackOverflow. That can’t be right?!įiguring out what’s was going on wasn’t that hard. So in it takes about 10 seconds in total to connect to a locally running (almost empty) MongoDB instance. In that line, it is still trying to set up the proper MongoDB connection. I double checked my settings, but you can see it’s really trying to connect to a locally running instance by the log messages stating it tries to connect to localhost on 27017.Ī couple of lines down it makes another jump of about 4 seconds. After about five seconds, the application logs an entry when it tries to setup a connection to a locally running MongoDB instance. The first jump is after handling the bean integrationGlobalProperties. What’s interesting about the above log is that it makes a couple of multi-second jumps. 23:53:21,293 INFO - Checking unique service notification from repository: 23:53:15,829 INFO - Cluster created with settings ] to localhost:27017 Let’s take a look at a snippet of the log: 23:53:10,293 INFO - Bean 'integrationGlobalProperties' of type is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) In the log file, there were a couple of strange jumps in time that I wanted to investigate further. Just leveraging the logging framework with the Spring Boot application gives you pretty good insight into what’s going on during the launch of the application. Most of us run the entire application and its dependencies (MongoDB and Elasticsearch) on our laptop and the application requires no remote connections, so I was always wondering what the application was doing during those 60+ seconds. My teammates always said they found it strange, as well, but nobody bothered to spend the time to investigate the cause. When I started the application with IntelliJ, it always took more than 60 seconds to start the deployed application, which I thought was pretty long given the size of the application. Spring Boot applications can run perfectly fine with an embedded container, but since we deploy the application within a Tomcat container in our acceptance and production environments, I always stick to the same deployment manner on my local machine.Īfter joining the project in March, one thing always kept bugging me.
During my normal development cycle, I always start the application from within IntelliJ by means of a run configuration that deploys the application to a local Tomcat container. At my current project, we’re developing an application based on Spring Boot.
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