Gopal V created HIVE-18597:
------------------------------
Summary: LLAP: Packaging for log4j NDC has two log4j jars it can
pick
Key: HIVE-18597
URL: https://issues.apache.org/jira/browse/HIVE-18597
Project: Hive
Issue Type: Bug
Reporter: Gopal V
The log4j 1 and 2.x jars have NDC classes with identical package names.
{code}
// log4j-1.2-API needed for NDC
org.apache.log4j.NDC.class,
{code}
Queries fail with
{code}
java.lang.ClassCastException: org.apache.log4j.NDC$DiagnosticContext cannot be
cast to java.lang.String
at
org.apache.hadoop.hive.llap.daemon.impl.TaskRunnerCallable.setMDCFromNDC(TaskRunnerCallable.java:312)
~[hive-llap-server-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
{code}
If the service driver packages the log4j1.x jar instead of the 2.x API shim jar.
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