Github user zenfenan commented on a diff in the pull request: https://github.com/apache/nifi/pull/2513#discussion_r172590173 --- Diff: nifi-nar-bundles/nifi-standard-services/nifi-record-serialization-services-bundle/nifi-record-serialization-services/src/main/java/org/apache/nifi/csv/CSVHeaderSchemaStrategy.java --- @@ -79,4 +81,12 @@ public RecordSchema getSchema(Map<String, String> variables, final InputStream c public Set<SchemaField> getSuppliedSchemaFields() { return schemaFields; } + + private String normalizeNameForAvro(String inputName) { + String normalizedName = inputName.replaceAll("[^A-Za-z0-9_]", "_"); --- End diff -- How about this `[^A-Za-z0-9_]+`? So rather than adding N underscores for continuous non-compatible characters, it adds a single `_`.
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