2.9其他组件配置修改
l Hadoop配置
在Custom hdfs-site添加如下两个配置：
hadoop.proxyuser.hue.groups=*
hadoop.proxyuser.hue.hosts=*
同时开启webhdfs
2.10启动Hue
在Ambari界面启动Hue
2.11登录Hue
用户名、密码：hue
2.12安装参考链接
https://github.com/EsharEditor/ambari-hue-service
3.整合问题 问题1：启动Hue失败，报编码问题UnicodeEncodeError: 'ascii' codec can't encode character u'\u201c' in position 3462: ordinal not in range(128)
解决办法：在Hue安装节点上修改sudo.py
vim /usr/lib/python2.6/site-packages/resource_management/core/sudo.py
添加
import sys
reload(sys)
sys.setdefaultencoding('utf-8')
参考链接：https://github.com/EsharEditor/ambari-hue-service/issues/19
问题2：Hue首页PREFERRED_STORAGE_ENGINE We recommend MySQL InnoDB engine over MyISAM which does not support transactions.
解决办法：执行如下两个命令
mysql -u root -proot -e \
"SELECT CONCAT('ALTER TABLE ',table_schema,'.',table_name,' engine=InnoDB;') \
FROM information_schema.tables \
WHERE engine = 'MyISAM' AND table_schema = 'hue';" \
| grep "ALTER TABLE hue" > /tmp/set_engine_innodb.ddl
mysql -u root -proot < /tmp/set_engine_innodb.ddl
参考链接： https://www.cloudera.com/documentation/enterprise/5-8-x/topics/hue_trb_misconfig.html
问题3：不管Hue使用的执行引擎（Tez、Mapreduce）是什么，即使HiveServer2运行正常，但是在使用Hue时，第一次一切正常，但后面就会显示如下信息：HiveThe application won't work without a running HiveServer2.
hiveserver2.log日志文件输入如下错误信息：
Thread-95]: thrift.ThriftHttpServlet (ThriftHttpServlet.java:doPost(145)) - Could not validate cookie sent, will try to generate a new cookie
2017-10-13 16:05:56,038 ERROR [HiveServer2-HttpHandler-Pool: Thread-95]: thrift.ThriftHttpServlet (ThriftHttpServlet.java:doPost(209)) - Error:
org.apache.hive.service.auth.HttpAuthenticationException: Authorization header received from the client is empty.
at org.apache.hive.service.cli.thrift.ThriftHttpServlet.getAuthHeader(ThriftHttpServlet.java:548)
at org.apache.hive.service.cli.thrift.ThriftHttpServlet.getAuthHeaderTokens(ThriftHttpServlet.java:529)
at org.apache.hive.service.cli.thrift.ThriftHttpServlet.getUsername(ThriftHttpServlet.java:507)
at org.apache.hive.service.cli.thrift.ThriftHttpServlet.doPasswdAuth(ThriftHttpServlet.java:355)
at org.apache.hive.service.cli.thrift.ThriftHttpServlet.doPost(ThriftHttpServlet.java:164)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:349)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:449)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:925)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:857)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:76)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)