if a M/R script doesn't return any data from the g...
# ask-stanley-ai
m
if a M/R script doesn't return any data from the getInputData stage, how can I make sure the overall status of script the run is "Complete" instead of "Failed"?
c
AI generated answer (using internal Slack threads):
In a Map/Reduce script, if the
getInputData
stage doesn't return any data, you can still ensure that the overall status of the script run is "Complete" instead of "Failed". You can achieve this by returning an empty array
[]
from the
getInputData
stage when there's no more data to process. This will prevent the script from progressing to the
map
stage and will not mark the script execution as failed. Here is a sample code snippet:
Copy code
javascript
function getInputData() {
    var data = // your data retrieval logic here
    if (data.length === 0) {
        return [];
    }
    return data;
}
In this code, if the data length is zero (i.e., there's no data to process), the function returns an empty array. This will prevent the script from progressing to the
map
stage and will not mark the script execution as failed. Also, if you want to abort or exit the Map/Reduce script conditionally from execution, you can handle your condition within the
getInputData
stage. If the condition is triggered, you can return an empty array to stop the script execution. Remember, the
getInputData
stage is the first stage in the Map/Reduce script execution. It's responsible for gathering the data that the script will process. If this stage doesn't return any data, the script won't progress to the next stages (
map
and
reduce
). ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******
Slack thread 1: here (available only if the original thread was posted in the last 90 days)
Similarity score: 0.814835608
Slack thread 2: here (available only if the original thread was posted in the last 90 days)
Similarity score: 0.812586367
Slack thread 3: here (available only if the original thread was posted in the last 90 days)
Similarity score: 0.811555743
Please provide your feedback on this answer.