Henrik Baastrup created PARQUET-395:
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Summary: System.out is used as logger in org.apache.parquet.Log
Key: PARQUET-395
URL: https://issues.apache.org/jira/browse/PARQUET-395
Project: Parquet
Issue Type: Bug
Affects Versions: 1.8.0
Environment: parquet-common-1.8.1.jar
Reporter: Henrik Baastrup
The use of System.out in the StreamHandler at line 62 in the
org.apache.parquet.Log provoke that the java.util.logging.LogManager will close
System.out in case the reset method is called on the LogManager.
This is special problematic when Shutdown Hooks are used in a project, as the
LogManager set-up one there call the reset method, and for this reason a race
condition exist on System.out, if used in the project Shutdown Hook.
An eventual solution is to not use java.util.logging.Logger at all in the
Parquet environment but use either log4j or slf4j as used in almost every other
part in the Hadoop environment, this would also allow the user to control the
logging much better than today.
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