HBase 0.92 warnings about SLF4J bindings

Question

I installed HBase 0.92 on Hadoop 1.0.0 and it works fine in full-distributed mode, but an annoying warning keeps appearing. How can I get rid of it?

 .......
 hbase(main):001:0> status
 SLF4J: Class path contains multiple SLF4J bindings.

 SLF4J: Found binding in
 [jar:file:/opt/hbase-0.92.0/lib/slf4j-log4j12-1.5.8.jar!/org/slf4j/impl/StaticLoggerBinder.class]

 SLF4J: Found binding in
 [jar:file:/opt/hadoop-1.0.0/lib/slf4j-log4j12-1.4.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
: See http://www.slf4j.org/codes.html#multiple_bindings for an
 explanation.

 3 servers, 0 dead, 0.6667 average load

 .......

P.S. I did not set the $CLASSPATH variable in hbase-env.sh. I run Hadoop with start-all.sh, then start HBase with start-hbase.sh.

Answer 1

I removed the slf4j-log4j12-1.5.8.jar in ${hase}/lib/ then the warning never shown again. It should be due to a duplicated class loaded, both hadoop and hbase use the same jar in the same jvm.

You can give it a try.