azkaban java.lang.StackOverflowError thrown from the UncaughtExceptionHandler in thread "main"

执行/bin/azkaban-web-start.sh报错

报错：Exception: java.lang.StackOverflowError thrown from the UncaughtExceptionHandler in thread "main"

原因：缺少log4j.properties
解决办法：
在Azkaban-web-server 的conf目录下创建文件夹conf/log4j.properties：
写入以下内容

log4j.rootLogger=INFO,C
log4j.appender.C=org.apache.log4j.ConsoleAppender
log4j.appender.C.Target=System.err
log4j.appender.C.layout=org.apache.log4j.PatternLayout
log4j.appender.C.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n