[ 
https://issues.apache.org/jira/browse/AMBARI-14162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15036158#comment-15036158
 ] 

DIPAYAN BHOWMICK commented on AMBARI-14162:
-------------------------------------------

After the changes to Hadoop 2.7.1 jar there is a dependency of Charsets class 
and that is not present in the commons-io:2.1 that gets pulled in as the 
dependency. 

Below is the dependency tree:

{code:java}
➜  files git:(branch-2.1) ✗ mvn dependency:tree -Dverbose -Dincludes=commons-io
Picked up _JAVA_OPTIONS: -Xmx2048m -XX:MaxPermSize=512m -Djava.awt.headless=true
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Files 1.0.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.1:tree (default-cli) @ files ---
[INFO] org.apache.ambari.contrib.views:files:jar:1.0.0.0-SNAPSHOT
[INFO] +- org.apache.hadoop:hadoop-hdfs:jar:2.7.1:compile
[INFO] |  \- commons-io:commons-io:jar:2.1:compile (version managed from 2.4)
[INFO] +- org.apache.hadoop:hadoop-common:jar:2.7.1:compile
[INFO] |  \- (commons-io:commons-io:jar:2.1:compile - version managed from 2.4; 
omitted for duplicate)
[INFO] +- org.apache.hadoop:hadoop-minicluster:jar:2.7.1:test
[INFO] |  +- org.apache.hadoop:hadoop-common:test-jar:tests:2.7.1:test
[INFO] |  |  \- (commons-io:commons-io:jar:2.1:test - version managed from 2.4; 
omitted for duplicate)
[INFO] |  +- org.apache.hadoop:hadoop-hdfs:test-jar:tests:2.7.1:test
[INFO] |  |  \- (commons-io:commons-io:jar:2.1:test - version managed from 2.4; 
omitted for duplicate)
[INFO] |  \- 
org.apache.hadoop:hadoop-yarn-server-tests:test-jar:tests:2.7.1:test
[INFO] |     \- 
org.apache.hadoop:hadoop-yarn-server-resourcemanager:jar:2.7.1:test
[INFO] |        \- (commons-io:commons-io:jar:2.1:test - version managed from 
2.4; omitted for duplicate)
[INFO] \- 
org.apache.ambari.contrib.views:ambari-views-utils:jar:0.0.1.0-SNAPSHOT:compile
[INFO]    +- (commons-io:commons-io:jar:2.1:compile - version managed from 2.4; 
omitted for duplicate)
[INFO]    \- org.apache.hadoop:hadoop-yarn-common:jar:2.7.1:compile
[INFO]       \- (commons-io:commons-io:jar:2.1:compile - version managed from 
2.4; omitted for duplicate)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.804s
[INFO] Finished at: Wed Dec 02 19:48:19 IST 2015
[INFO] Final Memory: 20M/443M
[INFO] ------------------------------------------------------------------------
{code}

So, dependency for commons-io:2.4 has to be added to the Files project.

Similar issue: https://issues.apache.org/jira/browse/AMBARI-10644

> Files view fails at runtime to instantiate ProtobufRpcEngine class
> ------------------------------------------------------------------
>
>                 Key: AMBARI-14162
>                 URL: https://issues.apache.org/jira/browse/AMBARI-14162
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-views
>    Affects Versions: 2.1.2
>            Reporter: DIPAYAN BHOWMICK
>            Assignee: DIPAYAN BHOWMICK
>            Priority: Blocker
>             Fix For: 2.1.3
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> After ambari-server start, when user navigates to Files view, 500 Server 
> error is returned with the following stacktrace in logs:
> {code:java}
> 02 Dec 2015 14:29:02,731  WARN [qtp-ambari-client-28] ServletHandler:563 - 
> /api/v1/views/FILES/versions/1.0.0/instances/files_instance/resources/files/fileops/listdir
> java.lang.NoClassDefFoundError: org/apache/commons/io/Charsets
>       at org.apache.hadoop.ipc.Server.<clinit>(Server.java:182)
>       at 
> org.apache.hadoop.ipc.ProtobufRpcEngine.<clinit>(ProtobufRpcEngine.java:72)
>       at java.lang.Class.forName0(Native Method)
>       at java.lang.Class.forName(Class.java:348)
>       at 
> org.apache.hadoop.conf.Configuration.getClassByNameOrNull(Configuration.java:2134)
>       at 
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2099)
>       at 
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193)
>       at org.apache.hadoop.ipc.RPC.getProtocolEngine(RPC.java:204)
>       at org.apache.hadoop.ipc.RPC.getProtocolProxy(RPC.java:577)
>       at 
> org.apache.hadoop.hdfs.NameNodeProxies.createNNProxyWithClientProtocol(NameNodeProxies.java:418)
>       at 
> org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:314)
>       at 
> org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:176)
>       at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:678)
>       at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:619)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
>       at 
> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2653)
>       at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:92)
>       at 
> org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2687)
>       at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2669)
>       at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:371)
>       at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:170)
>       at org.apache.ambari.view.utils.hdfs.HdfsApi$1.run(HdfsApi.java:70)
>       at org.apache.ambari.view.utils.hdfs.HdfsApi$1.run(HdfsApi.java:68)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at javax.security.auth.Subject.doAs(Subject.java:422)
>       at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
>       at org.apache.ambari.view.utils.hdfs.HdfsApi.execute(HdfsApi.java:397)
>       at org.apache.ambari.view.utils.hdfs.HdfsApi.<init>(HdfsApi.java:68)
>       at 
> org.apache.ambari.view.utils.hdfs.HdfsUtil.connectToHDFSApi(HdfsUtil.java:126)
>       at 
> org.apache.ambari.view.filebrowser.HdfsService.getApi(HdfsService.java:79)
>       at 
> org.apache.ambari.view.filebrowser.FileOperationService.listdir(FileOperationService.java:64)
>       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:497)
>       at 
> com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
>       at 
> com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
>       at 
> com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
>       at 
> com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
>       at 
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
>       at 
> com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137)
>       at 
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
>       at 
> com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137)
>       at 
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
>       at 
> com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137)
>       at 
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
>       at 
> com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137)
>       at 
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
>       at 
> com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137)
>       at 
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
>       at 
> com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
>       at 
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
>       at 
> com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
>       at 
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)
>       at 
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)
>       at 
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)
>       at 
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)
>       at 
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)
>       at 
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:540)
>       at 
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:715)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
>       at 
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)
>       at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
>       at 
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
>       at 
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.apache.ambari.server.security.authorization.AmbariAuthorizationFilter.doFilter(AmbariAuthorizationFilter.java:196)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
>       at 
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>       at 
> org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
>       at 
> org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
>       at 
> org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
>       at 
> org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
>       at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
>       at 
> org.apache.ambari.server.api.MethodOverrideFilter.doFilter(MethodOverrideFilter.java:72)
>       at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
>       at 
> org.apache.ambari.server.api.AmbariPersistFilter.doFilter(AmbariPersistFilter.java:47)
>       at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
>       at 
> org.apache.ambari.server.security.AbstractSecurityHeaderFilter.doFilter(AbstractSecurityHeaderFilter.java:117)
>       at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
>       at 
> org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:82)
>       at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:294)
>       at 
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467)
>       at 
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501)
>       at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
>       at 
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
>       at 
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
>       at 
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
>       at 
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429)
>       at 
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
>       at 
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
>       at 
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
>       at 
> org.apache.ambari.server.controller.AmbariHandlerList.processHandlers(AmbariHandlerList.java:216)
>       at 
> org.apache.ambari.server.controller.AmbariHandlerList.processHandlers(AmbariHandlerList.java:205)
>       at 
> org.apache.ambari.server.controller.AmbariHandlerList.handle(AmbariHandlerList.java:152)
>       at 
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
>       at org.eclipse.jetty.server.Server.handle(Server.java:370)
>       at 
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
>       at 
> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:971)
>       at 
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1033)
>       at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
>       at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
>       at 
> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
>       at 
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696)
>       at 
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53)
>       at 
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
>       at 
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
>       at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.ClassNotFoundException: org.apache.commons.io.Charsets
>       at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
>       at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
>       at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
>       at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>       at 
> org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:430)
>       at 
> org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:383)
>       ... 122 more
> {code}



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