Please see the attached image.
I want the subjob (4) to execute only when subjob (1) including (2) and (3) is completed successfully. Hence, I want to forcefully include component (2) and (3) into subjob (1). I am trying to drag (2) and (3) into (1) but this doesn't seem to work. Is this possible in Talend ETL?
Currently, I have subjob (4) execute when subjob (1) completes excluding (2) and (3) as is seen in image. Please help clear my understanding.
Related
Please see the image.
So here is a flow, wherein the first component executes a database query to find QAR_ID (single row), if it is found then all well. I am trying to put error handling into this. When no rows are found, it directs to tJava_11 which raises an java exception and that gets logged by another tJava component.
The problem I am facing is when it goes to error handling flow, it logs the error and just goes to the post-job section. However, I want Talend to take the OnSubJobOk route so that it continues with other steps instead of directly jumping to post-job section.
I know this is possible using subjobs but I don't want to keep creating 'n' number of subjobs.
Is there any way this can be done in the same job?
You could remove the runif and handle both scenarios in the get_QAR_ID into context component. ie query the database component's NB_LINE after variable, if it's <1 raise the error, else set the value. Your job would then flow to the onSubjobOk.
You can do something like this :
In tJava_1 you do your error logging if no row is returned by your query, and you continue to the next subjob. No need to throw an exception here only to catch it immediately after.
If any row is found, you continue to the next subjob (tJava_2) with an If trigger.
I am trying to implement parallelization within talend. I have it working, but now I don't know how to connect the parallelization work to the next part. Usually, you would click on the previous block and select OnSubjobOk. That option doesn't appear. Is there another component that I need to add that I don't know about?
Under the basic settings of tParallelize you would find the option Wait For. This have two options -
end of first subjob: sequence the relevant subjob to be executed at
the end of the first subjob
end of all subjobs: sequence the relevant subjob to be executed at the end of all
subjobs.
So, all you have to do is connect your next part - your sub job with the tParallelize component by selecting the trigger - synchronize(wait for all). This would ensure once all the parallel subjobs/components are executed the sub job connected with synchronize(wait for all) will be executed.
I need to execute a sequence of steps a specific number of times.. any pointers on what is the best way to do this in Spring Batch. I am able to implement executing a single step 'x' times. but my requirement is to execute a set of steps - based on a condition 'x' times.Any pointers will help.
Thanks
Lakshmi
You could put all steps in a job an start the whole job several times. There are different ways, how a job actually is launched in spring-batch. have a look at joboperator and launcher and then simply implement a loop around the launching of the job.
You can do this after the whole spring-context is initialized, so there will be no overhead concerning that. But you must by attention about the scope of your beans, especially the reader and writers.
Depending on your needs concerning failurehandling and restart, you also have pay attention how you manage the execution context of your job and steps.
You can simulate a loop with SB using a JobExecutionDecider:
Put it in front of all steps.
Store x in job execution context and check for x value into
decider: move to 'END' if x equals desidered value or increment it
and move to first step of set.
After last step move back to start (the decider).
Trying to troubleshoot an existing Talend job with many iterations and sub-jobs created by a developer who is no longer with the company. Ran into an issue with subjobs and hoping someone here can answer.
I know by reading the documentation that OnSubjobOk10 indicates that the job will execute after #10 is complete. But in a workflow with no names, how I do know which is Subjob#10? Can I assume it is the one from where the job-job connection is made?
Thanks in advance,
Bee
OnSubJobOK will make te next subjob work if the previous subjob finished without error, from help.talend:
OnSubjobOK (previously Then Run): This link is used to trigger the
next subjob on the condition that the main subjob completed without
error. This connection is to be used only from the start component of
the Job.
These connections are used to orchestrate the subjobs forming the Job
or to easily troubleshoot and handle unexpected errors.
I have a job with two steps. first step is to create a file in a folder with the following structure
src/<timestamp>/file.zip
The next step needs to retrieve this file and process it
I want to add the timestamp to the job parameter. Each job instance is differentiated by the timestamp, but I won't know the timestamp before the first step completes. If i add a timestamp at the beginning of the job to the job parameter then each time a new job instance will be started. any incomplete job will be ignored.
I think you can make use of JobExecutionContext instead.
Step 1 gets the current timestamp, use that to generate the file, and put to JobExecutionContext. Step 2 read from the JobExecutionContext to get the timestamp, which used to construct the input path for its processing.
Just to add something on top on your approach of splitting steps like this: You have to think twice whether this is really what you want. If Step 1 finished, and Step 2 failed, when the job instance is re-runed, it will start from Step 2, that means the file is not going to regenerate in Step 1 (because it is completed already). If it is what you look for, that's fine. If not, you may see if you want to put Step1 & Step2 in one step instead.