job-scheduling

Understanding the Shortest Job First Algorithm (Non-preemptive)

。_饼干妹妹 提交于 2021-02-08 11:52:11
问题 The shortest job first algorithm is shown in the following image: If it is shortest job first/shortest process next, shouldn't the order be: P1 → P5 → P3 → P4 → P2 ? Since that's the order of lowest to highest service times. Why does process 2 come second? I know if we use burst times instead, that would be the order, but I have no idea what the differences between service time and burst times are. Any help would be much appreciated explaining that graphic. 回答1: The image in the question

Create oracle scheduler job which runs daily

那年仲夏 提交于 2021-02-07 18:32:12
问题 I want to create oracle scheduler job which runs daily at 20:00 and runs for 30 minute. This job will delete the rows from KPI_LOGS table as this table contains large amount of data and it continues to grow. I have created the below script in oracle sql developer for such job but not sure if this is correct or not as i am new to scheduler job concept. BEGIN DBMS_SCHEDULER.CREATE_JOB ( job_name => '"RATOR_MONITORING"."CROP_KPI_LOGS"', job_type => 'PLSQL_BLOCK', job_action => 'DELETE FROM KPI

Create oracle scheduler job which runs daily

99封情书 提交于 2021-02-07 18:32:07
问题 I want to create oracle scheduler job which runs daily at 20:00 and runs for 30 minute. This job will delete the rows from KPI_LOGS table as this table contains large amount of data and it continues to grow. I have created the below script in oracle sql developer for such job but not sure if this is correct or not as i am new to scheduler job concept. BEGIN DBMS_SCHEDULER.CREATE_JOB ( job_name => '"RATOR_MONITORING"."CROP_KPI_LOGS"', job_type => 'PLSQL_BLOCK', job_action => 'DELETE FROM KPI

YARN not preempting resources based on fair shares when running a Spark job

只愿长相守 提交于 2021-02-06 09:50:10
问题 I have a problem with re-balancing Apache Spark jobs resources on YARN Fair Scheduled queues. For the tests I've configured Hadoop 2.6 (tried 2.7 also) to run in pseudo-distributed mode with local HDFS on MacOS. For job submission used "Pre-build Spark 1.4 for Hadoop 2.6 and later" (tried 1.5 also) distribution from Spark's website. When tested with basic configuration on Hadoop MapReduce jobs, Fair Scheduler works as expected: When resources of the cluster exceed some maximum, fair shares

Automatically scheduling SQL query results to be exported to a csv file

孤街浪徒 提交于 2021-01-29 07:52:55
问题 I have tried to read up on this topic and I am still a bit unclear how to proceed. This seemed like a fairly basic task but it has been nowhere as simple as I had assumed. I have several SQL queries written and I want to be able to schedule them to run on a certain day each month and then automatically be exported to a .csv file in a selected folder. This will then allow them to be automatically uploaded into a BI and reporting tool that our firm uses (this part I know how to take care of). I

Node Js: Redis job is not completing after finish its task

天大地大妈咪最大 提交于 2020-12-13 03:07:49
问题 Hope you guys are doing great. I implemented BullMQ (next major version of Bull) into my nodejs project to schedule the jobs to send emails. For example, send email of forget password request. So, I have written my code something like below. User Service: await resetPasswordJob({email: 'xyz@test.com'}); // from service I'm calling a job Reset Password Job: const {Queue} = require('bullmq'); const IOredis = require('ioredis'); const connection = new IOredis(process.env.REDIS_PORT || 6379);

Node Js: Redis job is not completing after finish its task

♀尐吖头ヾ 提交于 2020-12-13 03:04:38
问题 Hope you guys are doing great. I implemented BullMQ (next major version of Bull) into my nodejs project to schedule the jobs to send emails. For example, send email of forget password request. So, I have written my code something like below. User Service: await resetPasswordJob({email: 'xyz@test.com'}); // from service I'm calling a job Reset Password Job: const {Queue} = require('bullmq'); const IOredis = require('ioredis'); const connection = new IOredis(process.env.REDIS_PORT || 6379);

Node Js: Redis job is not completing after finish its task

孤街醉人 提交于 2020-12-13 03:03:33
问题 Hope you guys are doing great. I implemented BullMQ (next major version of Bull) into my nodejs project to schedule the jobs to send emails. For example, send email of forget password request. So, I have written my code something like below. User Service: await resetPasswordJob({email: 'xyz@test.com'}); // from service I'm calling a job Reset Password Job: const {Queue} = require('bullmq'); const IOredis = require('ioredis'); const connection = new IOredis(process.env.REDIS_PORT || 6379);

Node Js: Redis job is not completing after finish its task

别等时光非礼了梦想. 提交于 2020-12-13 03:01:07
问题 Hope you guys are doing great. I implemented BullMQ (next major version of Bull) into my nodejs project to schedule the jobs to send emails. For example, send email of forget password request. So, I have written my code something like below. User Service: await resetPasswordJob({email: 'xyz@test.com'}); // from service I'm calling a job Reset Password Job: const {Queue} = require('bullmq'); const IOredis = require('ioredis'); const connection = new IOredis(process.env.REDIS_PORT || 6379);

Create scheduled task using Task Scheduler Managed Wrapper with “Synchronize across time zones” option disabled

徘徊边缘 提交于 2020-12-12 09:22:27
问题 Does anybody know how to create a scheduled task using Task Scheduler Managed Wrapper or Schtasks.exe with "Synchronize across time zones" unchecked. 回答1: You can do this with schtasks.exe , but it's tricky. Essentially, you have to use the /xml switch and pass an XML file that has the trigger formatted properly. The basics of the XML file can be determined by getting as much of the required config done in the Task Scheduler GUI on your dev machine; then using Export... from the context menu,