[doc][github] Update README and create issue/pr template (apache#631)

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -0,0 +1,56 @@
+name: Bug report
+description: Problems with the software
+title: "[Bug] "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you very much for your feedback!
+  - type: checkboxes
+    attributes:
+      label: Search before asking
+      description: >
+        Please search [issues](https://github.com/apache/incubator-paimon/issues) to check if your issue has already been reported.
+      options:
+        - label: >
+            I searched in the [issues](https://github.com/apache/incubator-paimon/issues) and found nothing similar.
+          required: true
+  - type: textarea
+    attributes:
+      label: Paimon version
+      description: >
+        Please provide the version of Paimon you are using. If you are using the master branch, please provide the commit id.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Compute Engine
+      description: >
+        Please provide the compute engine you use and its version. Flink or Spark or Hive or Trino or Presto or JavaAPI.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Minimal reproduce step
+      description: Please try to give reproducing steps to facilitate quick location of the problem.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: What doesn't meet your expectations?
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Anything else?
+  - type: checkboxes
+    attributes:
+      label: Are you willing to submit a PR?
+      description: >
+        We look forward to the community of developers or users helping solve Paimon problems together. If you are willing to submit a PR to fix this problem, please check the box.
+      options:
+        - label: I'm willing to submit a PR!
+  - type: markdown
+    attributes:
+      value: "Thanks for completing our form!"

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Subscribe Mailing List
+    url: mailto:[email protected]
+    about: Subscribe User Mailing List
+  - name: DingTalk Group (Chinese)
+    url: https://qr.dingtalk.com/action/joingroup?code=v1,k1,+LzfVP12Bl5pdCtcy+G9YIDZjnXsKjhN/y3yLCQAffY=&_dt_no_comment=1&origin=11
+    about: Join DingTalk Group

.github/ISSUE_TEMPLATE/feature.yml

@@ -0,0 +1,40 @@
+name: Feature
+description: Add new feature, improve code, and more
+labels: [ "enhancement" ]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you very much for your feature proposal!
+  - type: checkboxes
+    attributes:
+      label: Search before asking
+      description: >
+        Please search [issues](https://github.com/apache/incubator-paimon/issues) to check if your issue has already been reported.
+      options:
+        - label: >
+            I searched in the [issues](https://github.com/apache/incubator-paimon/issues) and found nothing similar.
+          required: true
+  - type: textarea
+    attributes:
+      label: Motivation
+      description: Describe the motivations for this feature, like how it fixes the problem you meet.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Solution
+      description: Describe the proposed solution and add related materials like links if any.
+  - type: textarea
+    attributes:
+      label: Anything else?
+  - type: checkboxes
+    attributes:
+      label: Are you willing to submit a PR?
+      description: >
+        We look forward to the community of developers or users helping develop Paimon features together. If you are willing to submit a PR to implement the feature, please check the box.
+      options:
+        - label: I'm willing to submit a PR!
+  - type: markdown
+    attributes:
+      value: "Thanks for completing our form!"

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,17 @@
+*(Please specify the module before the PR name: [core] ... or [flink] ...)*
+
+### Purpose
+
+*(What is the purpose of the change, or the associated issue)*
+
+### Tests
+
+*(List UT and IT cases to verify this change)*
+
+### API and Format 
+
+*(Does this change affect API or storage format)*
+
+### Documentation
+
+*(Does this change introduce a new feature)*

README.md

@@ -1,25 +1,22 @@
-# Paimon
+# Paimon (Incubating)
 
-Paimon is a data lake storage for streaming updates/deletes changelog ingestion and high-performance queries in real time.
+Paimon is a streaming data lake platform that supports high-speed data ingestion, change data tracking and efficient real-time analytics.
 
-Paimon is developed under the umbrella of [Apache Flink](https://flink.apache.org/).
+Background and documentation is available at https://paimon.apache.org
 
-## Documentation & Getting Started
+Paimon's former name was Flink Table Store, developed from the Flink community. The architecture refers to some design concepts of Iceberg.
+Thanks to Apache Flink and Apache Iceberg.
 
-Please check out the full [documentation](https://nightlies.apache.org/flink/paimon-docs-master/), hosted by the
-[ASF](https://www.apache.org/), for detailed information and user guides.
+## Collaboration
 
-Check our [quick-start](https://nightlies.apache.org/flink/paimon-docs-master/docs/try-paimon/quick-start/) guide for simple setup instructions to get you started with the paimon.
+Paimon tracks issues in GitHub and prefers to receive contributions as pull requests.
 
-## Building
-
-Run the `mvn clean package -DskipTests` command to build the project.
+Community discussions happen primarily on the [dev mailing list](mailto:[email protected]) or on specific issues.
 
-Then you will find a JAR file for Flink engine with all shaded dependencies: `paimon-flink/paimon-flink-**/target/paimon-flink-**-<version>.jar`.
-
-## Contributing
+## Building
 
-You can learn more about how to contribute on the [Apache Flink website](https://flink.apache.org/contributing/how-to-contribute.html). For code contributions, please read carefully the [Contributing Code](https://flink.apache.org/contributing/contribute-code.html) section for an overview of ongoing community work.
+- Run the `mvn clean package -DskipTests` command to build the project.
+- Run the `mvn spotless:apply` to format the project (both Java and Scala).
 
 ## License
 

docs/content/_index.md

@@ -24,13 +24,15 @@ under the License.
 
 # Apache Paimon
 
-Paimon is a unified storage to build dynamic tables for both streaming and
-batch processing in Flink, supporting high-speed data ingestion and timely data query.
+Apache Paimon(incubating) is a streaming data lake platform that supports high-speed data ingestion, change data tracking and efficient real-time analytics.
+
 Paimon offers the following core capabilities:
-- Support storage of large datasets and allow read/write in both batch and streaming mode.
-- Support streaming queries with minimum latency down to milliseconds.
-- Support Batch/OLAP queries with minimum latency down to the second level.
-- Support incremental snapshots for stream consumption by default. So users do not need to combine different pipelines by themself.
+
+- Unified Batch & Streaming: Paimon supports batch write and batch read, as well as streaming write changes and streaming read table changelogs.
+- Data Lake: As a data lake storage, Paimon has the following advantages: low cost, high reliability, and scalable metadata.
+- Merge Engines: Paimon supports rich Merge Engines. By default, the last entry of the primary key is reserved. You can also use the "partial-update" or "aggregation" engine.
+- Changelog producer: Paimon supports rich Changelog producers, such as "lookup" and "full-compaction". The correct changelog can simplify the construction of a streaming pipeline.
+- Append Only Tables: Paimon supports Append Only tables, automatically compact small files, and provides orderly stream reading. You can use this to replace message queues.
 
 {{< columns >}}
 ## Try Paimon
@@ -43,12 +45,7 @@ step introduction to the APIs and guides you through real applications.
 
 ## Get Help with Paimon
 
-If you get stuck, check out our [community support
-resources](https://flink.apache.org/community.html). In particular, Apache
-Flink’s user mailing list is consistently ranked as one of the most active of
-any Apache project, and is a great way to get help quickly.
+If you get stuck, you can subscribe User Mailing List ([email protected]),
+Paimon tracks issues in GitHub and prefers to receive contributions as pull requests. You can also create an issue.
 
 {{< /columns >}}
-
-Paimon is developed under the umbrella of
-[Apache Flink](https://flink.apache.org/).

docs/content/concepts/overview.md

@@ -26,8 +26,7 @@ under the License.
 
 # Overview
 
-Paimon is a unified storage to build dynamic tables for both streaming and
-batch processing in Flink, supporting high-speed data ingestion and timely data query.
+Apache Paimon(incubating) is a streaming data lake platform that supports high-speed data ingestion, change data tracking and efficient real-time analytics.
 
 ## Architecture
 
@@ -46,10 +45,8 @@ As shown in the architecture above:
 **Ecosystem:** In addition to Apache Flink, Paimon also supports read by other computation
 engines like Apache Hive, Apache Spark and Trino.
 
-**Internal:** Under the hood, Paimon uses a hybrid storage architecture with a lake format to store
-historical data and a queue system to store incremental data. The former stores the columnar files on
-the filesystem/object-store and uses the LSM tree structure to support a large volume of data updates
-and high-performance queries. The latter uses Apache Kafka to capture data in real-time.
+**Internal:** Under the hood, Paimon stores the columnar files on the filesystem/object-store and uses
+the LSM tree structure to support a large volume of data updates and high-performance queries.
 
 ## Unified Storage