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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Work logged] (HDDS-1587) Support dynamically adding delegated class to filteredclass loader
Date Wed, 12 Jun 2019 03:15:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-1587?focusedWorklogId=258305&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-258305
]

ASF GitHub Bot logged work on HDDS-1587:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 12/Jun/19 03:14
            Start Date: 12/Jun/19 03:14
    Worklog Time Spent: 10m 
      Work Description: chenjunjiedada commented on pull request #942: HDDS-1587. Support
dynamically adding delegated classes from to isolated class loader.
URL: https://github.com/apache/hadoop/pull/942#discussion_r292732610
 
 

 ##########
 File path: hadoop-ozone/ozonefs/src/main/java/org/apache/hadoop/fs/ozone/FilteredClassLoader.java
 ##########
 @@ -57,6 +57,12 @@ public FilteredClassLoader(URL[] urls, ClassLoader parent) {
     delegatedClasses.add("org.apache.hadoop.fs.ozone.OzoneFSStorageStatistics");
     delegatedClasses.add("org.apache.hadoop.fs.ozone.Statistic");
     delegatedClasses.add("org.apache.hadoop.fs.Seekable");
+    String[] dynamicDelegatedClasses =
+        System.getProperty("HADOOP_OZONE_DELEGATED_CLASSES").split(";");
+    for (String delegatedClass : dynamicDelegatedClasses) {
+      delegatedClasses.add(delegatedClass);
+    }
 
 Review comment:
   I see.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 258305)
    Time Spent: 2h  (was: 1h 50m)

> Support dynamically adding delegated class to filteredclass loader
> ------------------------------------------------------------------
>
>                 Key: HDDS-1587
>                 URL: https://issues.apache.org/jira/browse/HDDS-1587
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>    Affects Versions: 0.4.0
>            Reporter: Xiaoyu Yao
>            Assignee: Junjie Chen
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> HDDS-922 added a filtered class loader with a list of delegated classes that will be
loaded with the app launcher's classloader. With security enabled on ozone-0.4, there are
some incompatible changes from Hadoop-common and hadoop-auth module from Hadoop-2.x to Hadoop-3.x.
Some examples can be seen HDDS-1080, where the fix has to be made along with a rebuild/release. 
>  
> This ticket is opened to allow dynamically adding delegated classes or class prefix via environment
variable. This way, we can easily adjust the setting in different deployment without rebuild/release.
>  
>  



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