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Update and document experimental features (#13348)
* Update and document experimental features * Updated * Update experimental-features.md * Update docs/development/experimental-features.md Co-authored-by: Abhishek Agarwal <1477457+abhishekagarwal87@users.noreply.github.com> * Updated after review * Updated * Update materialized-view.md * Update experimental-features.md Co-authored-by: Abhishek Agarwal <1477457+abhishekagarwal87@users.noreply.github.com>
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Jill Osborne
GitHub
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@ -1375,7 +1375,7 @@ For GCE's properties, please refer to the [gce-extensions](../development/extens
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This section contains the configuration options for the processes that reside on Data servers (MiddleManagers/Peons and Historicals) in the suggested [three-server configuration](../design/processes.md#server-types).
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Configuration options for the experimental [Indexer process](../design/indexer.md) are also provided here.
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Configuration options for the [Indexer process](../design/indexer.md) are also provided here.
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### MiddleManager and Peons
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@ -2188,7 +2188,7 @@ Supported query contexts:
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|Key|Description|Default|
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|---|-----------|-------|
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|`druid.expressions.useStrictBooleans`|Controls the behavior of Druid boolean operators and functions, if set to `true` all boolean values will be either a `1` or `0`. See [expression documentation](../misc/math-expr.md#logical-operator-modes)|false|
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|`druid.expressions.allowNestedArrays`|If enabled, Druid array expressions can create nested arrays. This is experimental and should be used with caution.|false|
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|`druid.expressions.allowNestedArrays`|If enabled, Druid array expressions can create nested arrays.|false|
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### Router
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#### Router Process Configs
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@ -0,0 +1,68 @@
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---
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id: experimental-features
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title: "Experimental features"
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---
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<!--
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~ Licensed to the Apache Software Foundation (ASF) under one
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~ or more contributor license agreements. See the NOTICE file
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~ distributed with this work for additional information
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~ regarding copyright ownership. The ASF licenses this file
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~ to you under the Apache License, Version 2.0 (the
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~ "License"); you may not use this file except in compliance
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~ with the License. You may obtain a copy of the License at
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~
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~ http://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing,
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~ software distributed under the License is distributed on an
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~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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~ KIND, either express or implied. See the License for the
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~ specific language governing permissions and limitations
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~ under the License.
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-->
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The following features are marked [experimental](./experimental.md) in the Druid docs.
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This document includes each page that mentions an experimental feature. To graduate a feature, remove all mentions of its experimental status on all relevant pages.
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Note that this document does not track the status of contrib extensions, some of which are experimental.
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## SQL-based ingestion
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- [SQL-based ingestion](../multi-stage-query/index.md)
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- [SQL-based ingestion concepts](../multi-stage-query/concepts.md)
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- [SQL-based ingestion and multi-stage query task API](../multi-stage-query/api.md)
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## Nested columns
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- [Nested columns](../querying/nested-columns.md)
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## Indexer process
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- [Indexer process](../design/indexer.md)
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- [Processes and servers](../design/processes.md#indexer-process-optional)
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## Kubernetes
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- [Kubernetes](../development/extensions-core/kubernetes.md)
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## Segment locking
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- [Configuration reference](../configuration/index.md#overlord-operations)
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- [Task reference](../ingestion/tasks.md#locking)
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- [Design](../design/architecture.md#availability-and-consistency)
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## Moments sketch
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- [Aggregations](../querying/aggregations.md#moments-sketch-experimental)
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## Front coding
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- [Ingestion spec reference](../ingestion/ingestion-spec.md#front-coding)
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## Other configuration properties
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- [Configuration reference](../configuration/index.md)
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- `CLOSED_SEGMENTS_SINKS` mode
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- Expression processing configuration `druid.expressions.allowNestedArrays`
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@ -22,9 +22,6 @@ title: "Cached Lookup Module"
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~ under the License.
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-->
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> Please note that this is an experimental module and the development/testing still at early stage. Feel free to try it and give us your feedback.
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## Description
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This Apache Druid module provides a per-lookup caching mechanism for JDBC data sources.
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The main goal of this cache is to speed up the access to a high latency lookup sources and to provide a caching isolation for every lookup source.
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@ -56,8 +56,6 @@ This topic contains configuration reference information for the Apache Kafka sup
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## Task Autoscaler Properties
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> Note that Task AutoScaler is currently designated as experimental.
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| Property | Description | Required |
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| ------------- | ------------- | ------------- |
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| `enableTaskAutoScaler` | Enable or disable autoscaling. `false` or blank disables the `autoScaler` even when `autoScalerConfig` is not null| no (default == false) |
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@ -149,8 +149,6 @@ Where the file `supervisor-spec.json` contains a Kinesis supervisor spec:
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#### Task Autoscaler Properties
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> Note that Task AutoScaler is currently designated as experimental.
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| Property | Description | Required |
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| ------------- | ------------- | ------------- |
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| `enableTaskAutoScaler` | Enable or disable the auto scaler. When false or absent, Druid disables the `autoScaler` even when `autoScalerConfig` is not null.| no (default == false) |
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@ -115,8 +115,8 @@ will not detect this automatically.
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Dynamic Configuration
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---------------------
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> Dynamic lookup configuration is an [experimental](../development/experimental.md) feature. Static
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> configuration is no longer supported.
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> Static configuration is no longer supported.
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The following documents the behavior of the cluster-wide config which is accessible through the Coordinator.
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The configuration is propagated through the concept of "tier" of servers.
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A "tier" is defined as a group of services which should receive a set of lookups.
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