elek 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_r270925461
 
 

 ##########
 File path: hadoop-ozone/dist/src/main/compose/ozonefs/docker-compose.yaml
 ##########
 @@ -49,21 +49,53 @@ services:
       environment:
          ENSURE_SCM_INITIALIZED: /data/metadata/scm/current/VERSION
       command: ["/opt/hadoop/bin/ozone","scm"]
-   hadoop3:
+   hadoop32:
       image: flokkr/hadoop:3.1.0
 
 Review comment:
   This is not hadoop-runner but real hadoop image. We don't use any specific 
features, so in theory we can switch to use apache/hadoop images. (Note: this 
is not modified in this patch, flokkr images was used even before).
   
   But for apache/hadoop image we don't have specific tags only one hadoop:2 
and hadoop:3. One solution is to create separated tags for all the versions. It 
would be possible with creating the proposed dedicated repository:
   
   https://issues.apache.org/jira/browse/HADOOP-16092
   
   

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