How do I suppress the bloat of useless information when using the DUMP command while using grunt via 'pig -x local'?

Question

I'm working with PigLatin, using grunt, and every time I 'dump' stuffs, my console gets clobbered with blah blah, blah non-info, is there a way to surpress all that?

grunt> A = LOAD 'testingData' USING PigStorage(':'); dump A; 

2013-05-06 19:42:04,146 [main] INFO org.apache.pig.tools.pigstats.ScriptState - Pig features used in the script: UNKNOWN
2013-05-06 19:42:04,147 [main] INFO
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler - File concatenation threshold: 100 optimistic? false ...
...
--- another like 50 lines of useless context clobbering junk here... till --- ...
...
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Success!

now my like 4 lines of info looking for:

(daemon,*,1,1,System Services,/var/root,/usr/bin/false)
(uucp,*,,,/var/spool/uucp,/usr/sbin/uucico)
(taskgated,*,13,13,Task Gate Daemon,/var/empty,/usr/bin/false)
(networkd,*,24,24,Network Services,/var/empty,/usr/bin/false)
(installassistant,*,25,25,/usr/bin/false)

grunt>                                                                                       

---> obviously if it errors, fine lotsa info helpful, but not when it basically works great.

Answer 1

You need to set the log4j properties. For example:

$PIG_HOME/conf/pig.properties :
enable:
# log4jconf=./conf/log4j.properties

rename: log4j.properties.template -> log4j.properties

log4j.properties :
set info to error:
log4j.logger.org.apache.pig=info, A

You may also set the Hadoop related logging level as well:

log4j.logger.org.apache.hadoop = error, A