Method configureLog4J

src/org/apache/pig/Main.java:754–800

(Properties properties, PigContext pigContext)

    //TODO jz: log4j.properties should be used instead
    private static void configureLog4J(Properties properties, PigContext pigContext) {
        // TODO Add a file appender for the logs
        // TODO Need to create a property in the properties file for it.
        // sgroschupf, 25Feb2008: this method will be obsolete with PIG-115.

        String log4jconf = properties.getProperty(LOG4J_CONF);
        String trueString = "true";
        boolean brief = trueString.equalsIgnoreCase(properties.getProperty(BRIEF));
        Level logLevel = Level.INFO;

        String logLevelString = properties.getProperty(DEBUG);
        if (logLevelString != null){
            logLevel = Level.toLevel(logLevelString, Level.INFO);
        }

        final Properties props = log4jConfAsProperties(log4jconf);
        if (props.size() == 0) {
            props.setProperty("log4j.logger.org.apache.pig", logLevel.toString());
            if((logLevelString = System.getProperty("pig.logfile.level")) == null){
                props.setProperty("log4j.rootLogger", "INFO, PIGCONSOLE");
            }
            else{
                logLevel = Level.toLevel(logLevelString, Level.INFO);
                props.setProperty("log4j.logger.org.apache.pig", logLevel.toString());
                props.setProperty("log4j.rootLogger", "INFO, PIGCONSOLE, F");
                props.setProperty("log4j.appender.F","org.apache.log4j.RollingFileAppender");
                props.setProperty("log4j.appender.F.File",properties.getProperty("pig.logfile"));
                props.setProperty("log4j.appender.F.layout","org.apache.log4j.PatternLayout");
                props.setProperty("log4j.appender.F.layout.ConversionPattern", brief ? "%m%n" : "%d [%t] %-5p %c - %m%n");
            }

            props.setProperty("log4j.appender.PIGCONSOLE","org.apache.log4j.ConsoleAppender");
            props.setProperty("log4j.appender.PIGCONSOLE.target", "System.err");
            props.setProperty("log4j.appender.PIGCONSOLE.layout","org.apache.log4j.PatternLayout");
            props.setProperty("log4j.appender.PIGCONSOLE.layout.ConversionPattern", brief ? "%m%n" : "%d [%t] %-5p %c - %m%n");
        }

        PropertyConfigurator.configure(props);
        logLevel = Logger.getLogger("org.apache.pig").getLevel();
        if (logLevel==null) {
            logLevel = Logger.getLogger("org.apache.pig").getEffectiveLevel();
        }
        Properties backendProps = pigContext.getLog4jProperties();
        backendProps.setProperty("log4j.logger.org.apache.pig", logLevel.toString());
        pigContext.setLog4jProperties(backendProps);
        pigContext.setDefaultLogLevel(logLevel);
    }

   @VisibleForTesting
   static Properties log4jConfAsProperties(String log4jconf) {