* [Refactor worker] simplify and optimize config (#2386)

* simplify config

* simplify config

* simplify and optimize config

* Update HadoopUtils.java

optimize HadoopUtils

* Update HadoopUtilsTest.java

* Update HadoopUtilsTest.java

* Update HadoopUtilsTest.java

* Update HttpUtils.java

* Update pom.xml

* Update HadoopUtilsTest.java

* Update HadoopUtilsTest.java

* Update HadoopUtilsTest.java

* Update HadoopUtilsTest.java

* Update HadoopUtilsTest.java

* Update HadoopUtilsTest.java