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https://issues.apache.org/jira/browse/APEXCORE-767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16095953#comment-16095953
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Thomas Weise commented on APEXCORE-767:
---------------------------------------
Following change to use existing context class loader as parent resolved the
issue:
{code}
diff --git
a/engine/src/main/java/com/datatorrent/stram/client/StramAppLauncher.java
b/engine/src/main/java/com/datatorrent/stram/client/StramAppLauncher.java
index d4f0170f3..305502de6 100644
--- a/engine/src/main/java/com/datatorrent/stram/client/StramAppLauncher.java
+++ b/engine/src/main/java/com/datatorrent/stram/client/StramAppLauncher.java
@@ -535,7 +535,7 @@ public class StramAppLauncher
public URLClassLoader loadDependencies()
{
- URLClassLoader cl =
URLClassLoader.newInstance(launchDependencies.toArray(new
URL[launchDependencies.size()]));
+ URLClassLoader cl =
URLClassLoader.newInstance(launchDependencies.toArray(new
URL[launchDependencies.size()]),
Thread.currentThread().getContextClassLoader());
Thread.currentThread().setContextClassLoader(cl);
StringCodecs.check();
return cl;
{code}
> Duplicate class loading in CLI for single application launch
> -------------------------------------------------------------
>
> Key: APEXCORE-767
> URL: https://issues.apache.org/jira/browse/APEXCORE-767
> Project: Apache Apex Core
> Issue Type: Bug
> Reporter: Thomas Weise
>
> StramAppLauncher will create multiple class loaders in a way that leads to
> duplicate loading of the same class (while listing app package, then when
> launching). It also appears that the context class loader is never reset.
>
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