exchange update faq (#1800)

vesoft-inc · Dec 6, 2022 · 4e894ab · 4e894ab
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diff --git a/docs-2.0/nebula-exchange/ex-ug-FAQ.md b/docs-2.0/nebula-exchange/ex-ug-FAQ.md
@@ -46,9 +46,9 @@ Solution: Add the following configuration in the `profiles` scope of Maven's `se
 
 ## Execution
 
-### Q: How to submit in Yarn-Cluster mode?
+### Q: Error: `java.lang.ClassNotFoundException: com.vesoft.nebula.exchange.Exchange`
 
-To submit a task in Yarn-Cluster mode, run the following command:
+To submit a task in Yarn-Cluster mode, run the following command, **especially the two '--conf' commands in the example**.
 
 ```bash
 $SPARK_HOME/bin/spark-submit --class com.vesoft.nebula.exchange.Exchange \

diff --git a/docs-2.0/nebula-exchange/parameter-reference/ex-ug-para-import-command.md b/docs-2.0/nebula-exchange/parameter-reference/ex-ug-para-import-command.md
@@ -20,9 +20,9 @@ After editing the configuration file, run the following commands to import speci
 
     The version number of a JAR file is subject to the name of the JAR file that is actually compiled.
 
-!!! note
+!!! faq
 
-    If users use the [yarn-cluster mode](https://spark-reference-doc-cn.readthedocs.io/zh_CN/latest/deploy-guide/running-on-yarn.html) to submit a job, see the following command:
+    If users use the [yarn-cluster mode](https://spark-reference-doc-cn.readthedocs.io/zh_CN/latest/deploy-guide/running-on-yarn.html) to submit a job, see the following command, **especially the two '--conf' commands in the example**.
 
     ```bash
     $SPARK_HOME/bin/spark-submit     --master yarn-cluster \