How can I avoid DocumentAlreadyExists exception logging?

I saw previous post about this
topic: https://groups.google.com/forum/?fromgroups=#!searchin/elasticsearch/documentalreadyexists/elasticsearch/hEsowZS0zJ4/anFBJaT6rXkJ

But I am seeing differently formatted log messages:

[999]: index [errors_log20130227], type [default], id [1361989081], message
[DocumentAlreadyExistsException[[errors_log20130227][0]
[default][1361989081]: document already exists]]

How can I turn off this logging?

FYI, the following is logging.yml file I am using

rootLogger: INFO, filelogger:

log action execution errors for easier debugging # gateway

index.gateway: INFO

peer shard recovery indices.recovery: INFO

discovery discovery: INFO

index.search.slowlog: INFO, index_search_slow_log_file
index.merge: INFOadditivity:
index.search.slowlog: falseappender:
file: type: dailyRollingFile file: ${path.logs}/${cluster.name}.log
datePattern: "'.'yyyy-MM-dd" layout: type: pattern
conversionPattern: "[%d{ISO8601}][%-5p][%-25c] %m%n"
index_search_slow_log_file:
type: dailyRollingFile file:
${path.logs}/${cluster.name}_index_search_slowlog.log datePattern:
"'.'yyyy-MM-dd"
layout: type: pattern conversionPattern:
"[%d{ISO8601}][%-5p][%-25c] %m%n"

--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.