java - log4j warning after `homebrew install zookeeper` -

-

i'm running mac os x 10. did brew install zookeeper.

then created /usr/local/etc/zookeeper/zoo.cfg based on /usr/local/etc/zookeeper/zoo_sample.cfg.

then zkserver start works fine.

but, when trying connect zookeeper clojure, uses zookeeper java client, error:

log4j:warn no appenders found logger (org.apache.zookeeper.zookeeper). log4j:warn please initialize log4j system properly. log4j:warn see http://logging.apache.org/log4j/1.2/faq.html#noconfig more info.

my log4j.properties file:

log4j.rootcategory=warn, zklog log4j.appender.zklog = org.apache.log4j.fileappender log4j.appender.zklog.file = /usr/local/var/log/zookeeper/zookeeper.log log4j.appender.zklog.append = true log4j.appender.zklog.layout = org.apache.log4j.patternlayout log4j.appender.zklog.layout.conversionpattern = %d{yyyy-mm-dd hh:mm:ss} %c{1} [%p] %m%n

so, questions are:

  1. what reasonable log4j configuration situation?
  2. what homebrew do, out of box, prevent warning happening?

to clear, there 2 log4j.properties files involved. one created homebrew , gets written /usr/local/etc/zookeeper/log4j.properties. file not cause of error message above.

the other log4j.properties file particular (my) application. so, answer part 1 of question, create log4j.properties file on classpath of clojure app, such in src directory.

log4j.rootlogger=warn, a1 log4j.logger.user=debug log4j.appender.a1=org.apache.log4j.consoleappender log4j.appender.a1.layout=org.apache.log4j.patternlayout log4j.appender.a1.layout.conversionpattern=%d %-5p %c: %m%n  log4j.logger.org.apache.zookeeper=warn

i built starting https://github.com/clojure/tools.logging , adding last line.

to answer part 2, homebrew not , should not have how clojure application sets logging.


Comments

Post a Comment

Popular posts from this blog

javascript - Count length of each class -

-
i have below code in this fiddle . html <span class="myname">john smith</span> <span class="myname">john smith</span> <span class="myname">john smith</span> <span class="myname">john smith</span> <span class="myname">john smith</span> <span class="myname">john smith</span> javascript $('.myname').each(function(){ var text = $(this).html().split(' '), len = text.length, test = $(this).val().length, result = []; console.log('outside: ' + test); for( var = 0; < len; i++ ) { result[i] = '<span class="name-'+[i]+'" >' + text[i] + '</span>'; console.log('inside: ' + test); } $(this).html(result.join(' ')); console.log('after
Read more

What design pattern is this code in Javascript? -

-
this question has answer here: why write “.call(this)” @ end of javascript anonymous function? [duplicate] 4 answers what kind of design pattern , significance of using closure? (function(){ // code here }).call(this); edit then difference between above code , following this keyword still refer same object in both ways. (function(){ // code here })(); thats invoked function expression. more info here: http://benalman.com/news/2010/11/immediately-invoked-function-expression/ the purpose run code while protecting scope (so variables declared within don't leak out global scope. update call sets value of this function being applied on. without it, value set window object, there set outer scope.
Read more

hadoop - Restrict secondarynamenode to be installed and run on any other node in the cluster -

-
i have have cloudera cdh3u4 cluster setup. have secondarynamenode daemon running on 1 of nodes. i have ensure user has root access node on cluster (for example, datanode not have other daemons running) should not able start instance of secondarynamenode daemon on node (thereby having 2 secondarynamenodes on cluster) how can achieve this? thanks in advance. add property hdfs-site.xml namedfs.secondary.http.address valuesecondarynamenode-host address or ip:50090
Read more