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chore: Merge branch 'main' into fix/signal-processing-jupyterhub-chart
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docs/modules/demos/pages/nifi-kafka-druid-earthquake-data.adoc

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@@ -258,7 +258,7 @@ You can see the available data sources by clicking on `Datasources` at the top.
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image::nifi-kafka-druid-earthquake-data/druid_4.png[]
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You can see the data source's segments by clicking on `segments` under `Availability` for the `earthquakes` data source.
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You can see the data source's segments by clicking on `Segments` in the menu bar at the top.
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In this case, the `earthquakes` data source is partitioned by the year of the earthquakes, resulting in 73 segments.
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image::nifi-kafka-druid-earthquake-data/druid_5.png[]
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image::nifi-kafka-druid-earthquake-data/superset_10.png[]
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On the left select the database `druid`, the schema `druid` and set `See table schema` to `earthquakes`.
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On the left select the database `druid`, the schema `druid` and select `earthquakes` from the `druid` folder.
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Click on `Add a new tab`.
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image::nifi-kafka-druid-earthquake-data/superset_11.png[]
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docs/modules/demos/pages/nifi-kafka-druid-water-level-data.adoc

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`222`, more than 50 times the size. So, by choosing two dedicated topics over a single topic, this demo saved 50x of
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storage and computation costs.
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By clicking on `segments` under `Availability` for the `measurements` data source, you can see the segments of the data source.
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Click `Segments` in the menu bar at the top to see the segments of the data source.
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In this case, the `measurements` data source is partitioned by the measurement day, resulting in 32 segments.
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image::nifi-kafka-druid-water-level-data/druid_5.png[]
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=== Execute arbitrary SQL statements
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Within Superset, you can create dashboards and run arbitrary SQL statements. On the top, click on the tab `SQL` ->
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`SQL Lab`.
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Within Superset, you can create dashboards and run arbitrary SQL statements.
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On the top, click on the tab `SQL` -> `SQL Lab`.
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image::nifi-kafka-druid-water-level-data/superset_9.png[]
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On the left, select the database `druid`, the schema `druid` and set `See table schema` to `stations` or `measurements`.
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On the left select the database `druid`, the schema `druid` and select `stations` or `measurements` from the `druid` folder.
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Click on `Add a new tab`.
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image::nifi-kafka-druid-water-level-data/superset_10.png[]
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