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fix: follow naming convention for msq task engine (#13127)
* fix: follow naming convention for msq task engine * more fixes * add back in experimental * fix anchor
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@ -202,7 +202,7 @@ Keep the following in mind when using the task API to view reports:
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- The task report for an entire job is associated with the `query_controller` task. The `query_worker` tasks do not have
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their own reports; their information is incorporated into the controller report.
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- The task report API may report `404 Not Found` temporarily while the task is in the process of starting up.
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- As an experimental feature, the SQL task engine supports running SELECT queries. SELECT query results are written into
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- As an experimental feature, the MSQ task engine supports running SELECT queries. SELECT query results are written into
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the `multiStageQuery.payload.results.results` task report key as an array of arrays. The behavior and result format of plain
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SELECT queries (without INSERT or REPLACE) is subject to change.
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@ -27,7 +27,7 @@ sidebar_label: "Key concepts"
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> extension, new in Druid 24.0. Refer to the [ingestion methods](../ingestion/index.md#batch) table to determine which
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> ingestion method is right for you.
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## SQL task engine
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## Multi-stage query task engine
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The `druid-multi-stage-query` extension adds a multi-stage query (MSQ) task engine that executes SQL statements as batch
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tasks in the indexing service, which execute on [Middle Managers](../design/architecture.md#druid-services).
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@ -29,11 +29,11 @@ description: Introduces multi-stage query architecture and its task engine
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> ingestion method is right for you.
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Apache Druid supports SQL-based ingestion using the bundled [`druid-multi-stage-query` extension](#load-the-extension).
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This extension adds a [multi-stage query task engine for SQL](concepts.md#sql-task-engine) that allows running SQL
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This extension adds a [multi-stage query task engine for SQL](concepts.md#multi-stage-query-task-engine) that allows running SQL
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[INSERT](concepts.md#insert) and [REPLACE](concepts.md#replace) statements as batch tasks. As an experimental feature,
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the task engine also supports running SELECT queries as batch tasks.
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Nearly all SELECT capabilities are available in the SQL task engine, with certain exceptions listed on the [Known
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Nearly all SELECT capabilities are available in the multi-stage query (MSQ) task engine, with certain exceptions listed on the [Known
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issues](./known-issues.md#select) page. This allows great flexibility to apply transformations, filters, JOINs,
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aggregations, and so on as part of `INSERT ... SELECT` and `REPLACE ... SELECT` statements. This also allows in-database
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transformation: creating new tables based on queries of other tables.
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