Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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None
Description
The log4j 1 and 2.x jars have NDC classes with identical package names.
// log4j-1.2-API needed for NDC
org.apache.log4j.NDC.class,
Queries fail with
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]
If the service driver packages the log4j1.x jar instead of the 2.x API shim jar.