for suite, after looking in hadoop 2.6.0, the jar httpclient is set to 4.2.5, for solve this error i rename into sqoop2 the httpclient 4.1.2 by the version 4.2.5
seem working better, service is deployed and i can use client. but no connection between hue and sqoop2, i progress, slowly but surely.
./share/hadoop/kms/tomcat/webapps/kms/WEB-INF/lib/httpclient-4.2.5.jar
./share/hadoop/common/lib/httpclient-4.2.5.jar
./share/hadoop/httpfs/tomcat/webapps/webhdfs/WEB-INF/lib/httpclient-4.2.5.jar
./share/hadoop/tools/lib/httpclient-4.2.5.jar
sqoop2
./shell/lib/httpclient-4.1.2.jar