diff --git a/docs/en_US/TrialExample/SquadEvolutionExamples.md b/docs/en_US/TrialExample/SquadEvolutionExamples.md
index 7287a20529..39d74a955a 100644
--- a/docs/en_US/TrialExample/SquadEvolutionExamples.md
+++ b/docs/en_US/TrialExample/SquadEvolutionExamples.md
@@ -112,10 +112,6 @@ trial:
   memoryMB: 32869
   #The docker image to run nni job on OpenPAI
   image: msranni/nni:latest
-  #The hdfs directory to store data on OpenPAI, format 'hdfs://host:port/directory'
-  dataDir: hdfs://10.10.10.10:9000/username/nni
-  #The hdfs directory to store output data generated by nni, format 'hdfs://host:port/directory'
-  outputDir: hdfs://10.10.10.10:9000/username/nni
 paiConfig:
   #The username to login OpenPAI
   userName: username
@@ -125,7 +121,7 @@ paiConfig:
   host: 10.10.10.10
 ```
 
-Please change the default value to your personal account and machine information. Including `nniManagerIp`, `dataDir`, `outputDir`, `userName`, `passWord` and `host`.
+Please change the default value to your personal account and machine information. Including `nniManagerIp`, `userName`, `passWord` and `host`.
 
 In the "trial" part, if you want to use GPU to perform the architecture search, change `gpuNum` from `0` to `1`. You need to increase the `maxTrialNum` and `maxExecDuration`, according to how long you want to wait for the search result.
 
diff --git a/docs/en_US/Tutorial/ExperimentConfig.md b/docs/en_US/Tutorial/ExperimentConfig.md
index c551741f17..38cf439bca 100644
--- a/docs/en_US/Tutorial/ExperimentConfig.md
+++ b/docs/en_US/Tutorial/ExperimentConfig.md
@@ -375,14 +375,6 @@ machineList:
 
     __image__ set the image to be used in pai.
 
-  * __dataDir__
-
-    __dataDir__ is the data directory in hdfs to be used.
-
-  * __outputDir__
-
-    __outputDir__ is the output directory in hdfs to be used in pai, the stdout and stderr files are stored in the directory after job finished.
-
 * __trial(kubeflow)__
 
   * __codeDir__
@@ -723,10 +715,6 @@ machineList:
     memoryMB: 10000
     #The docker image to run NNI job on pai
     image: msranni/nni:latest
-    #The hdfs directory to store data on pai, format 'hdfs://host:port/directory'
-    dataDir: hdfs://10.11.12.13:9000/test
-    #The hdfs directory to store output data generated by NNI, format 'hdfs://host:port/directory'
-    outputDir: hdfs://10.11.12.13:9000/test
   paiConfig:
     #The username to login pai
     userName: test
diff --git a/examples/trials/ga_squad/README.md b/examples/trials/ga_squad/README.md
index 4065e5e239..e4e2054f61 100644
--- a/examples/trials/ga_squad/README.md
+++ b/examples/trials/ga_squad/README.md
@@ -116,10 +116,6 @@ trial:
   memoryMB: 32869
   #The docker image to run NNI job on OpenPAI
   image: msranni/nni:latest
-  #The hdfs directory to store data on OpenPAI, format 'hdfs://host:port/directory'
-  dataDir: hdfs://10.10.10.10:9000/username/nni
-  #The hdfs directory to store output data generated by NNI, format 'hdfs://host:port/directory'
-  outputDir: hdfs://10.10.10.10:9000/username/nni
 paiConfig:
   #The username to login OpenPAI
   userName: username
@@ -129,7 +125,7 @@ paiConfig:
   host: 10.10.10.10
 ```
 
-Please change the default value to your personal account and machine information. Including `nniManagerIp`, `dataDir`, `outputDir`, `userName`, `passWord` and `host`.
+Please change the default value to your personal account and machine information. Including `nniManagerIp`, `userName`, `passWord` and `host`.
 
 In the "trial" part, if you want to use GPU to perform the architecture search, change `gpuNum` from `0` to `1`. You need to increase the `maxTrialNum` and `maxExecDuration`, according to how long you want to wait for the search result.