[PIO-100] Remove SLF4J warning messages on pio command

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.12.0-incubating
• Target Version/s: 0.12.0-incubating
• Assignee: Shinsuke Sugaya
• Reporter: Shinsuke Sugaya
• Created: 07/Jul/17 10:16
• Updated: 05/Dec/17 22:44
• Resolved: 10/Jul/17 06:30

Description

pio command prints SLF4J warning as below:

$ /usr/share/predictionio/bin/pio status
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/share/predictionio/lib/spark/pio-data-hdfs-assembly-0.11.1-v1-SNAPSHOT.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/usr/share/predictionio/lib/pio-assembly-0.11.1-v1-SNAPSHOT.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]
...

The cause is that pio-data-hdfs contains slf4j-log4j12 jar file.

Issue Links

• links to: GitHub Pull Request #404