[AMBARI-24535] File View not accessible in Ambari 2.7 after enabling 3 namenodes in HDP 3.0

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Component/s: ambari-views
• Labels: pull-request-available
• Assignee: Nitiraj Singh Rathore
• Reporter: Akhil Naik
• Created: 24/Aug/18 11:57
• Updated: 26/Sep/18 05:40
• Resolved: 26/Sep/18 05:07

Description

Ambari-2.7.0 supports HDFS Federation architecture

But if we configure 3 namenode the Files view never works.

It will fail with below exception

Service 'hdfs' check failed: HDFS080 webhdfs.ha.namenodes.list namenodes count is not exactly 2

Service 'hdfs' check failed: 
org.apache.ambari.view.utils.hdfs.HdfsApiException: HDFS080 webhdfs.ha.namenodes.list namenodes count is not exactly 2 
at org.apache.ambari.view.utils.hdfs.ConfigurationBuilder.copyHAProperties(ConfigurationBuilder.java:247) 
at org.apache.ambari.view.utils.hdfs.ConfigurationBuilder.parseProperties(ConfigurationBuilder.java:110) 
at org.apache.ambari.view.utils.hdfs.ConfigurationBuilder.buildConfig(ConfigurationBuilder.java:327) 
at org.apache.ambari.view.utils.hdfs.HdfsApi.<init>(HdfsApi.java:75) 
at org.apache.ambari.view.utils.hdfs.HdfsUtil.getHdfsApi(HdfsUtil.java:157) 
at org.apache.ambari.view.utils.hdfs.HdfsUtil.connectToHDFSApi(HdfsUtil.java:145) 
at org.apache.ambari.view.commons.hdfs.HdfsService.hdfsSmokeTest(HdfsService.java:145) 
at org.apache.ambari.view.filebrowser.HelpService.hdfsStatus(HelpService.java:95) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:498) 
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) 

By inspecting the code , it looks like this is not supposed to work in filesview and it wil only allow two namenodes

code :
https://github.com/apache/ambari/blob/trunk/contrib/views/utils/src/main/java/org/apache/ambari/view/utils/hdfs/ConfigurationBuilder.java#L247

Issue Links

• links to: GitHub Pull Request #2351
• links to: GitHub Pull Request #2352