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https://issues.apache.org/jira/browse/IMPALA-14454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18045243#comment-18045243
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Riza Suminto commented on IMPALA-14454:
---------------------------------------
This exclusion caused an issue when Impala is deployed with Apache Atlas.
{code:java}
I20251007 11:02:24.618839 1 jni-util.cc:321]
java.lang.NoClassDefFoundError: org/apache/logging/log4j/core/Layout
at org.apache.atlas.hook.AtlasHook.<clinit>(AtlasHook.java:110)
at
org.apache.atlas.impala.hook.ImpalaHook.onImpalaStartup(ImpalaHook.java:47)
at
org.apache.atlas.impala.hook.ImpalaLineageHook.onImpalaStartup(ImpalaLineageHook.java:79)
at
org.apache.impala.hooks.QueryEventHookManager.<init>(QueryEventHookManager.java:151)
at
org.apache.impala.hooks.QueryEventHookManager.createFromConfig(QueryEventHookManager.java:105)
at org.apache.impala.service.Frontend.<init>(Frontend.java:555)
at org.apache.impala.service.Frontend.<init>(Frontend.java:512)
at org.apache.impala.service.JniFrontend.<init>(JniFrontend.java:158)
Caused by: java.lang.ClassNotFoundException:
org.apache.logging.log4j.core.Layout
at java.lang.ClassLoader.findClass(ClassLoader.java:524)
at
org.apache.atlas.plugin.classloader.AtlasPluginClassLoader$MyClassLoader.findClass(AtlasPluginClassLoader.java:341)
at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
at
org.apache.atlas.plugin.classloader.AtlasPluginClassLoader.loadClass(AtlasPluginClassLoader.java:138)
{code}
We need to revert this.
[https://gerrit.cloudera.org/c/23788/]
> Exclude log4j 2 dependencies
> ----------------------------
>
> Key: IMPALA-14454
> URL: https://issues.apache.org/jira/browse/IMPALA-14454
> Project: IMPALA
> Issue Type: Task
> Components: Frontend
> Reporter: Michael Smith
> Assignee: Michael Smith
> Priority: Major
> Fix For: Impala 5.0.0
>
>
> While we use reload4j, we can safely exclude log4j 2 dependencies to avoid
> including unnecessary jars.
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