On , I learnt ...

You can search for Loggly mapping conflicts

Loggly stores your JSON event data in a single ElasticSearch schema. As such, you need to be careful about using consistent types within your JSON payloads.

For example, if you publish a field as a string in one event but an object in another then you’ll get a mapping conflict and the latter object won’t be indexed correctly.

You can find mapping conflicts by searching for LogglyNotifications.type:MappingConflict then use the notifications data to see which field has the problem.

It’s hard to guard against this problem with static analysis in your codebase. But you can fix problems rapidly by setting up a alert that trips when new events match the above mapping conflict filter.