Stamatis Zampetakis created CALCITE-4858:
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Summary: Use Log4j2 instead of unsupported Log4j (1.x) in tests
Key: CALCITE-4858
URL: https://issues.apache.org/jira/browse/CALCITE-4858
Project: Calcite
Issue Type: Improvement
Affects Versions: 1.28.0
Reporter: Stamatis Zampetakis
Assignee: Stamatis Zampetakis
Fix For: 1.29.0
Currently the logger implementation (for SL4J APIs) that is used in tests is
Log4j (1.x) via slf4j-log4j12 dependency. Log4j (1.x) has reached [end of life
in
2015|https://blogs.apache.org/foundation/entry/apache_logging_services_project_announces]
and using it is highly discouraged for multiple reasons (security,
performance, features, etc.)
{noformat}
5 August 2015 --The Apache Logging Services™ Project Management Committee (PMC)
has announced that the Log4j™ 1.x logging framework has reached its end of life
(EOL) and is no longer officially supported.
{noformat}
The goal of this JIRA is to use the more modern Log4j2 as the chosen
implementation for the SLF4J APIs (via log4j-slf4j-impl) in tests. The only
modules that cannot benefit from this upgrade are Pig/Piglet due to tight
dependencies to log4j API.
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