[ACCUMULO-2926] Multiple slf4j bindings warning

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.6.1, 1.7.0

Environment

apache hadoop 2.4.0

• Assignee: Josh Elser
• Reporter: Josh Elser
• Created: 19/Jun/14 00:53
• Updated: 20/Jun/14 04:34
• Resolved: 20/Jun/14 04:34

Description

ACCUMULO-2808 introduced slf4j-log4j12 into Accumulo's classpath which clashes with the hadoop provided slf4j-log4j12 which prints out the lovely below message way too frequently.

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/lib/slf4j-log4j12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/local/lib/hadoop/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]

I'm seeing this in master, but I imagine it also exists in 1.6.1.

Issue Links

• requires: ACCUMULO-2646 Generate example configuration from template in build