If only 1 timer may ever be active at the same time, there are a couple of solutions. First of all the @Timer should probably be present on an @Singleton. In a Singleton methods are by default write-locked, so the container will automatically be locked-out when trying to invoke the timer method while there’s still … Read more
This is a very wide topic. And there are many options to achieve this. You can configure your application to have multiple profiles. For example use another profile ‘cron’ . And start your application on only one server with this profile. So for example, on a production environment you have three servers (S1, S2, S3), … Read more
Well, terminology can always be difficult since it depends on context. In many cases, you can be used to “submit a job to a cluster”, which for spark would be to submit a driver program. That said, Spark has his own definition for “job”, directly from the glossary: Job A parallel computation consisting of multiple … Read more
Did you already check all of those listed in Open Source Job Schedulers in Java: jcrontab Quartz Fulcrum Scheduler Essiembre J2EE Scheduler Gos4j Oddjob Job Scheduler JDRing jBatchEngine MyBatchFramework Super cron4j
Try * * * * * to run every minute. Unfortunately H/1 * * * * does not work due to open defect. Defect: https://issues.jenkins-ci.org/browse/JENKINS-22129
Right. Henning and P4u144 set me on the right track to answer this in more detail. Identify all registered jobs Identify your task with the adb shell dumpsys jobscheduler command. This will give you a huge output in following categories. Settings Registered XX Jobs Connectivity Alarms Idle Battery AppIdle Content Job history Pending queue The … Read more
Using the Job Control of bash to send the process into the background: Ctrl+Z to stop (pause) the program and get back to the shell. bg to run it in the background. disown -h [job-spec] where [job-spec] is the job number (like %1 for the first running job; find about your number with the jobs … Read more