diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-export-from-nebula.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-export-from-nebula.md
index 3882ca6f4c2..b96b143683e 100644
--- a/docs-2.0/nebula-exchange/use-exchange/ex-ug-export-from-nebula.md
+++ b/docs-2.0/nebula-exchange/use-exchange/ex-ug-export-from-nebula.md
@@ -27,7 +27,6 @@ CentOS 7.9.2009
 | Name | Version |
 | - | - |
 | JDK | 1.8.0 |
-| Hadoop | 2.10.1 |
 | Scala | 2.12.11 |
 | Spark | 2.4.7 |
 | NebulaGraph | {{nebula.release}} |
diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md
index eac43971003..47a77a28e2b 100644
--- a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md
+++ b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md
@@ -16,8 +16,6 @@ This example is done on MacOS. Here is the environment configuration information
 
 - Spark: 2.4.7, stand-alone
 
-- Hadoop: 2.9.2, pseudo-distributed deployment
-
 - ClickHouse: docker deployment yandex/clickhouse-server tag: latest(2021.07.01)
 
 - NebulaGraph: {{nebula.release}}. [Deploy NebulaGraph with Docker Compose](../../4.deployment-and-installation/2.compile-and-install-nebula-graph/3.deploy-nebula-graph-with-docker-compose.md).
@@ -38,8 +36,6 @@ Before importing data, you need to confirm the following information:
 
 - Learn about the Schema created in NebulaGraph, including names and properties of Tags and Edge types, and more.
 
-- The Hadoop service has been installed and started.
-
 ## Steps
 
 ### Step 1: Create the Schema in NebulaGraph
diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md
index 5a2e06321a0..283ea119b66 100644
--- a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md
+++ b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md
@@ -53,8 +53,6 @@ This example is done on MacOS. Here is the environment configuration information
 
 - Spark: 2.4.7, stand-alone
 
-- Hadoop: 2.9.2, pseudo-distributed deployment
-
 - HBase: 2.2.7
 
 - NebulaGraph: {{nebula.release}}. [Deploy NebulaGraph with Docker Compose](../../4.deployment-and-installation/2.compile-and-install-nebula-graph/3.deploy-nebula-graph-with-docker-compose.md).
@@ -75,8 +73,6 @@ Before importing data, you need to confirm the following information:
 
 - Learn about the Schema created in NebulaGraph, including names and properties of Tags and Edge types, and more.
 
-- The Hadoop service has been installed and started.
-
 ## Steps
 
 ### Step 1: Create the Schema in NebulaGraph
diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hive.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hive.md
index 65c710218cc..ad4f52a5dcf 100644
--- a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hive.md
+++ b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hive.md
@@ -82,7 +82,7 @@ Before importing data, you need to confirm the following information:
 
 - Learn about the Schema created in NebulaGraph, including names and properties of Tags and Edge types, and more.
 
-- Hadoop has been installed and started, and the Hive Metastore database (MySQL in this example) has been started.
+- The Hive Metastore database (MySQL in this example) has been started.
 
 ## Steps
 
diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-jdbc.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-jdbc.md
index 9ce1c536b79..48e218ad9e5 100644
--- a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-jdbc.md
+++ b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-jdbc.md
@@ -56,8 +56,6 @@ This example is done on MacOS. Here is the environment configuration information
 
 - Spark: 2.4.7, stand-alone
 
-- Hadoop: 2.9.2, pseudo-distributed deployment
-
 - MySQL: 8.0.23
 
 - NebulaGraph: {{nebula.release}}. [Deploy NebulaGraph with Docker Compose](../../4.deployment-and-installation/2.compile-and-install-nebula-graph/3.deploy-nebula-graph-with-docker-compose.md).
@@ -78,8 +76,6 @@ Before importing data, you need to confirm the following information:
 
 - Learn about the Schema created in NebulaGraph, including names and properties of Tags and Edge types, and more.
 
-- The Hadoop service has been installed and started.
-
 ## Steps
 
 ### Step 1: Create the Schema in NebulaGraph
diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-maxcompute.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-maxcompute.md
index 2cf189cda41..8ed7240e1aa 100644
--- a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-maxcompute.md
+++ b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-maxcompute.md
@@ -16,8 +16,6 @@ This example is done on MacOS. Here is the environment configuration information
 
 - Spark: 2.4.7, stand-alone
 
-- Hadoop: 2.9.2, pseudo-distributed deployment
-
 - MaxCompute: Alibaba Cloud official version
 
 - NebulaGraph: {{nebula.release}}. [Deploy NebulaGraph with Docker Compose](../../4.deployment-and-installation/2.compile-and-install-nebula-graph/3.deploy-nebula-graph-with-docker-compose.md).
@@ -38,8 +36,6 @@ Before importing data, you need to confirm the following information:
 
 - Learn about the Schema created in NebulaGraph, including names and properties of Tags and Edge types, and more.
 
-- The Hadoop service has been installed and started.
-
 ## Steps
 
 ### Step 1: Create the Schema in NebulaGraph
diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-mysql.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-mysql.md
index 76e075378dd..bc627c66c09 100644
--- a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-mysql.md
+++ b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-mysql.md
@@ -56,8 +56,6 @@ This example is done on MacOS. Here is the environment configuration information
 
 - Spark: 2.4.7, stand-alone
 
-- Hadoop: 2.9.2, pseudo-distributed deployment
-
 - MySQL: 8.0.23
 
 - NebulaGraph: {{nebula.release}}. [Deploy NebulaGraph with Docker Compose](../../4.deployment-and-installation/2.compile-and-install-nebula-graph/3.deploy-nebula-graph-with-docker-compose.md).
@@ -80,8 +78,6 @@ Before importing data, you need to confirm the following information:
 
 - Learn about the Schema created in NebulaGraph, including names and properties of Tags and Edge types, and more.
 
-- The Hadoop service has been installed and started.
-
 ## Steps
 
 ### Step 1: Create the Schema in NebulaGraph
diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-oracle.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-oracle.md
index b2a8b98caa0..7472d6d2a13 100644
--- a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-oracle.md
+++ b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-oracle.md
@@ -56,12 +56,6 @@ This example is done on MacOS. Here is the environment configuration information
 
 - Spark: 2.4.7, stand-alone
 
-- Hadoop: 2.9.2, pseudo-distributed deployment
-
-<!--
-- Oracle: 19c
--->
-
 - NebulaGraph: {{nebula.release}}. [Deploy NebulaGraph with Docker Compose](../../4.deployment-and-installation/2.compile-and-install-nebula-graph/3.deploy-nebula-graph-with-docker-compose.md).
 
 ## Prerequisites
@@ -80,8 +74,6 @@ Before importing data, you need to confirm the following information:
 
 - Learn about the Schema created in NebulaGraph, including names and properties of Tags and Edge types, and more.
 
-- The Hadoop service has been installed and started.
-
 ## Steps
 
 ### Step 1: Create the Schema in NebulaGraph