how to iterate on summarize the results of the reduceContext.write

AI generated answer (using internal Slack threads):

To iterate and summarize the results of the

reduceContext.write

in a Map/Reduce script, you can use the

context.output.iterator().each

function in the

summarize

stage. This function will iterate over each key/value pair that was written in the

reduce

stage. Here is a sample code snippet:

javascript
function summarize(context) {
  context.output.iterator().each(function(key, value) {
    log.debug(key, value);
    return true;
  });
}

In this code,

context.output.iterator().each

is a function that takes a callback function as an argument. This callback function is called for each key/value pair in the output of the

reduce

stage. The

key

and

value

arguments of the callback function represent the key and value of the current iteration. The

log.debug(key, value);

line is used to log the key and value for debugging purposes. You can replace this line with your own code to process the key/value pairs as needed. The

return true;

line is necessary to continue the iteration. If the callback function returns

false

, the iteration will stop. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******