I'm trying to figure out how to automatically kick off an AWS Glue Job when an AWS Glue Crawler completes. I see that the Crawlers send events when they complete, but I'm struggling to parse through the documentation to figure out how to listen to that event and then launch the AWS Glue Job.
This seems like a fairly simple question, but I haven't been able to find any leads so far. I'd appreciate some help. Thanks in advance!
You can create a CloudWatch event, choose Glue Crawler state change as Event source, choose a Lambda function as Event target, and in the Lambda function you can use boto3(or other language sdk) to invoke the job to run.
Use a AWS Glue Trigger.
For anything involving more than two steps, I'd recommend using AWS Glue Workflows. They are formed by chaining Glue jobs, crawlers and triggers together into a workflow that can be visualised and monitored easily.
Related
In AWS Glue, I am executing a couple of ETL jobs using workflow, Now I want to inform business via email on the failure of any of the ETL jobs. I need help to get name of failed job and the error caused the job to fail, and pass it to job which would trigger an email using Amazon SES.
It has to be done using only a Glue Workflow to trigger a second job that read the output message from the first job and send the email. Need to perform without using EventBridge for this.
Is it possible to call a glue job/ or python script from within another glue job without passing by glue endpoint and adding a new rule in SG?
You can use EventBridge for that. EventBridge supports Glue events.
I have created an AWS Glue Trigger as part of the AWS Glue Workflow that runs on a periodic basis. I have successfully set the periodic schedule via the trigger with no problems, but now I need to adjust the schedule. Is there a way for me to directly edit the schedule of the trigger without recreating the entire AWS Glue Workflow?
I tried modifying it directly from the AWS Glue Trigger Console:
But I can't get it done since the console requires me to choose a glue job that will get executed by the trigger which is not applicable to my case since the trigger should initiate a crawler instead of a glue job.
Answering my own question for others' reference:
Currently, there is no way to edit it directly using the AWS Glue Console. But I was able to accomplish it without recreating the entire Glue Workflow by leveraging the aws-cli for glue:
aws glue update-trigger --name "us_im_bol-cl-t0-prod-tg" --cli-input-json '{"TriggerUpdate":{"Name":"us_im_bol-cl-t0-prod-tg","Schedule":"cron(0 14 * * ? *)","Actions":[{"CrawlerName":"us_im_bol-t0-prod-cl"}]}}'
Just update the cron rule for the "Schedule" property.
In my team, we manage ETL jobs through Step Functions. As app requirements, we don't want to use Glue Workflows.
Most of our ETL jobs (i.e., step functions) are of the type:
Run Crawler on Data Source -> Execute Glue Job -> Run Crawler on Data Target
Now, I know that I can run .synch for AWS Glue jobs (ref), but I can't on Glue Crawlers. My question is: how do I make wait a Step Function until Crawler is done?
I thought about two solutions:
A dedicated Lambda periodically checks Crawler state. This is highly inefficient.
Step function waits for a CloudWatch event about change on Crawler state (i.e., "Succeed" or "Failed". The issue is I don't know how to implement this.
You can use EventBridge for that. EventBridge supports an event on Crawler State Change which then can trigger something in Step Functions.
I am learning about a wonderful tool called AWS Cloudformation and I am having a hard time finding resources to find how to trigger AWS Gluejob via SQS.
I learnt about Glue Triggers from here. How do I trigger a gluejob whenever something is dumped in SQS?
Any help or guidance is appreciated.
There is currently no possibility of SQS triggering a Glue job directly.
What you could do though, is writing a Lambda function, which gets triggered by your SQS.
In this Lambda function you could call the Glue SDK to start your Glue Job.
I am new with AWS and don't know how to do the following. When I put an object in S3 I want to launch a python script that does some transformations and returns it to another path in S3. I've tried a lambda function but the process takes more than 300 seconds. I've also tried it with a Glue job but I don't know how to trigger it when I put the file in S3.
Does anyone know how to do it? Maybe I'm using the wrong AWS tools.
The simple solution for your problem is here:
Since you've already mentioned that you have AWS Glue job working to do this operation. And all you don't know is how to trigger glue job when file placed in s3, I am answering to that question.
You can write an AWS lambda using boto3 module which can be triggered based up on the s3 event and have setup glue.start_job_run command in your lambda function.
response = client.start_job_run(
JobName='string')
https://boto3.readthedocs.io/en/latest/reference/services/glue.html#Glue.Client.start_job_run
Note:: I strongly believe Glue is the right tool rather than lambda for your requirement that you mentioned in question, because AWS lambda have time out limitation. It will get timeout after 300 seconds.
One option would be to use SQS:
Create the SQS queue.
Setup S3 to send notifications to the SQS queue when new objects are added to the source bucket. See Configuring Amazon S3 Event Notifications.
Setup your Python script on an EC2 instance and listen to the SQS queue in your code.
Upload the output of your Python script into the target S3 bucket after script finished.
Can you break up the Python processing into smaller steps? I'd definitely recommend that you use Lambda instead of managing EC2 if you can get your code to run within the Lambda restrictions.