batch-processing

问题 In the application I'm building there are a lot of scenarios where I need to select a group of aggregates on which to perform a specific operation. For instance, I may have to mark a bunch of Reminder aggregates as expired if they meet the expiration policy (there is only one). I have a ReminderExpirationPolicy domain service that is always applied before delivering reminders. This policy does something like: reminderRepository.findRemindersToExpire().forEach(function (reminder) { reminder

问题 In the application I'm building there are a lot of scenarios where I need to select a group of aggregates on which to perform a specific operation. For instance, I may have to mark a bunch of Reminder aggregates as expired if they meet the expiration policy (there is only one). I have a ReminderExpirationPolicy domain service that is always applied before delivering reminders. This policy does something like: reminderRepository.findRemindersToExpire().forEach(function (reminder) { reminder

问题 In the application I'm building there are a lot of scenarios where I need to select a group of aggregates on which to perform a specific operation. For instance, I may have to mark a bunch of Reminder aggregates as expired if they meet the expiration policy (there is only one). I have a ReminderExpirationPolicy domain service that is always applied before delivering reminders. This policy does something like: reminderRepository.findRemindersToExpire().forEach(function (reminder) { reminder

问题 I was using AWS and am new to GCP. One feature I used heavily was AWS Batch, which automatically creates a VM when the job is submitted and deletes the VM when the job is done. Is there a GCP counterpart? Based on my research, the closest is GCP Dataflow. The GCP Dataflow documentation led me to Apache Beam. But when I walk through the examples here (link), it feels totally different from AWS Batch. Any suggestions on submitting jobs for batch processing in GCP? My requirement is to simply

问题 Awk processes the files line by line. Assuming each line operation has no dependency on other lines, is there any way to make awk process multiple lines at a time in parallel? Is there any other text processing tool which automatically exploits parallelism and processes the data quicker ? 回答1: The only awk implementation that was attempting to provide a parallel implementation of awk was parallel-awk but it looks like the project is dead now. Otherwise, one way to parallelize awk is be to

问题 I am using spring batch to read records from postgresql DB using RepositoryItemReader and then write it to a topic. I see that there were around 1 million records which had to be processed but it didn't process all the records. I have set pageSize for reader as 10,000 and same as commit interval (chunk size) @Bean public TaskletStep broadcastProductsStep(){ return stepBuilderFactory.get("broadcastProducts") .<Product, Product> chunk(10000) .reader(productsReader.repositoryItemReader())

问题 I am using spring batch to read records from postgresql DB using RepositoryItemReader and then write it to a topic. I see that there were around 1 million records which had to be processed but it didn't process all the records. I have set pageSize for reader as 10,000 and same as commit interval (chunk size) @Bean public TaskletStep broadcastProductsStep(){ return stepBuilderFactory.get("broadcastProducts") .<Product, Product> chunk(10000) .reader(productsReader.repositoryItemReader())

问题 I have an application, where I need to update the source data periodically. Source datafile is a csv file normally stored in the project directory and read with read.csv. The csv. file is changed every day with the updates. The name of the file does not change...just few cases are added. I need the application to re-read the source pdf file with some periodicity (e.g. once per day). I can do it with reactiveFileReader function and it works when I am running the application from Rstudio, but

问题 Hangfire.io supports making a CRON-like scheduling of recurring jobs. But how do I specify, that a specific job should be run once, at a specific date/time, e.g. that a job should be run June 4th 2016, at 16:22 - and only at that specific point in time? A similar way to ask the same question could be: how large a subset of the CRON expression described here, is supported by Hangfire? (The described CRON expression supports a "Year"-field which could be used). Also, do you think Hangfire is

问题 I am trying to get the status code out of an Rscript run in an non-interactive way in the form of a bash script. This step is part of larger data processing cycle that involves db2 scripts among other things. So I have the following contents in a script sample.sh: Rscript --verbose --no-restore --no-save /home/R/scripts/sample.r >> sample.rout when this sample.sh is run it always returns a status code of 0, irrespective of if the sample.r script run fully or error out in an intermediate step.