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Subject [GitHub] [hadoop] xiaoyuyao commented on a change in pull request #653: HDDS-1333. OzoneFileSystem can't work with spark/hadoop2.7 because incompatible security classes
Date Tue, 02 Apr 2019 16:10:43 GMT
xiaoyuyao commented on a change in pull request #653: HDDS-1333. OzoneFileSystem can't work
with spark/hadoop2.7 because incompatible security classes
URL: https://github.com/apache/hadoop/pull/653#discussion_r271382877
 
 

 ##########
 File path: hadoop-hdds/docs/content/SparkOzoneFSK8S.md
 ##########
 @@ -78,11 +78,13 @@ And create a custom `core-site.xml`:
 <configuration>
     <property>
         <name>fs.o3fs.impl</name>
-        <value>org.apache.hadoop.fs.ozone.OzoneFileSystem</value>
+        <value>org.apache.hadoop.fs.ozone.BasicOzoneFileSystem</value>
     </property>
 </configuration>
 ```
 
+_Note_: You may also use `org.apache.hadoop.fs.ozone.OzoneFileSystem` without the `Basic`
prefix. The `Basic` version doesn't support FS statistics and security tokens but can work
together with older hadoop versions.
 
 Review comment:
   bq. "The `Basic` version doesn't support FS statistics and security tokens but can work
together with older hadoop versions."
   
   This is not accurate. If I understand correctly, the BasicOzoneFileSystem also support
delegation token APIs but not FS statistics.

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