Github user mmiklavc commented on a diff in the pull request:
https://github.com/apache/metron/pull/863#discussion_r160250862
--- Diff: metron-platform/metron-indexing/README.md ---
@@ -15,6 +15,12 @@ Indices are written in batch and the batch size and
batch timeout are specified
[Sensor Indexing Configuration](#sensor-indexing-configuration) via the
`batchSize` and `batchTimeout` parameters.
These configs are variable by sensor type.
+## Minimal Assumptions for Message Structure
+
+At minimum, a message should have a `sensor.type` field.
--- End diff --
sensor.type - did you mean source.type?
---
