317brian commented on code in PR #18286:
URL: https://github.com/apache/druid/pull/18286#discussion_r2223255515


##########
docs/tutorials/tutorial-kerberos-hadoop.md:
##########
@@ -23,6 +23,12 @@ sidebar_label: Kerberized HDFS deep storage
   ~ under the License.
   -->
 
+:::caution[Deprecated]
+
+Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.

Review Comment:
   ```suggestion
   Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.
   
   You must now explicitly opt-in to using the deprecated `index_hadoop` task 
type. To opt-in, set `druid.indexer.task.allowHadoopTaskExecution` to `true` in 
your `common.runtime.properties` file.
   ```



##########
docs/tutorials/tutorial-batch-hadoop.md:
##########
@@ -23,6 +23,11 @@ sidebar_label: Load from Apache Hadoop
   ~ under the License.
   -->
 
+:::caution[Deprecated]
+
+Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.

Review Comment:
   ```suggestion
   Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.
   
   You must now explicitly opt-in to using the deprecated `index_hadoop` task 
type. To opt-in, set `druid.indexer.task.allowHadoopTaskExecution` to `true` in 
your `common.runtime.properties` file.
   ```



##########
docs/ingestion/data-formats.md:
##########
@@ -962,11 +962,15 @@ Each line can be further parsed using 
[`parseSpec`](#parsespec).
 
 ### Avro Hadoop Parser
 
-:::info
- You need to include the 
[`druid-avro-extensions`](../development/extensions-core/avro.md) as an 
extension to use the Avro Hadoop Parser.
+:::caution[Deprecated]
+
+Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.

Review Comment:
   ```suggestion
   Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.
   
   You must now explicitly opt-in to using the deprecated `index_hadoop` task 
type. To opt-in, set `druid.indexer.task.allowHadoopTaskExecution` to `true` in 
your `common.runtime.properties` file.
   ```



##########
docs/operations/other-hadoop.md:
##########
@@ -23,6 +23,12 @@ title: "Working with different versions of Apache Hadoop"
   -->
 
 
+:::caution[Deprecated]
+
+Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.

Review Comment:
   ```suggestion
   Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.
   
   You must now explicitly opt-in to using the deprecated `index_hadoop` task 
type. To opt-in, set `druid.indexer.task.allowHadoopTaskExecution` to `true` in 
your `common.runtime.properties` file.
   ```



##########
docs/ingestion/hadoop.md:
##########
@@ -23,6 +23,13 @@ sidebar_label: "Hadoop-based"
   ~ under the License.
   -->
 
+:::caution[Deprecated]
+
+Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.

Review Comment:
   ```suggestion
   Hadoop-based ingestion deprecated. Use [SQL-based 
ingestion](../multi-stage-query/index.md) instead of MapReduce or 
[MiddleManager-less ingestion using 
Kubernetes](../development/extensions-core/k8s-jobs.md) instead of YARN.
   
   You must now explicitly opt-in to using the deprecated `index_hadoop` task 
type. To opt-in, set `druid.indexer.task.allowHadoopTaskExecution` to `true` in 
your `common.runtime.properties` file.
   ```



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