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https://issues.apache.org/jira/browse/HDDS-1587?focusedWorklogId=258267&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-258267
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ASF GitHub Bot logged work on HDDS-1587:
----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Jun/19 01:52
Start Date: 12/Jun/19 01:52
Worklog Time Spent: 10m
Work Description: xiaoyuyao 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_r292720912
##########
File path: hadoop-ozone/common/src/main/bin/ozone-config.sh
##########
@@ -49,3 +49,8 @@ else
exit 1
fi
+# HADOOP_OZONE_DELEGATED_CLASSES defines a list of classes which will be
loaded by default
+# class loader of application instead of isolated class loader. With this way
we can solve
+# incompatible problem when using hadoop3.x + ozone with older hadoop version.
+#export HADOOP_OZONE_DELEGATED_CLASSES=
Review comment:
This may not work because we expect to expose an environment variable but
the code in FilteredClassLoader only load a system property.
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Issue Time Tracking
-------------------
Worklog Id: (was: 258267)
Time Spent: 1h 10m (was: 1h)
> 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: 1h 10m
> 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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