Github user paul-rogers commented on a diff in the pull request: https://github.com/apache/drill/pull/1181#discussion_r177616893 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/flatten/FlattenRecordBatch.java --- @@ -99,6 +100,22 @@ private void clear() { } } + public enum Metric implements MetricDef { + NUM_INCOMING_BATCHES, --- End diff -- Strangely, these enum names show up as labels in the web UI. Maybe `INCOMING_BATCH_COUNT`? The `AVG_` and `TOTAL_` names seem readable enough...
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