[SPARK-8122] ParquetRelation.enableLogForwarding() may fail to configure loggers

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 1.5.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: Konstantin Shaposhnikov
• Created: 05/Jun/15 02:40
• Updated: 18/Oct/16 02:35
• Resolved: 18/Oct/16 02:35

Description

enableLogForwarding() doesn't hold to the created loggers that can be garbage collected and all configuration changes will be gone. From https://docs.oracle.com/javase/6/docs/api/java/util/logging/Logger.html javadocs: It is important to note that the Logger returned by one of the getLogger factory methods may be garbage collected at any time if a strong reference to the Logger is not kept.

All created logger references need to be kept, e.g. in static variables.