https://community.qlik.com/t5/Talend-Studio/Impala-HDFS-error-java-lang-NoClassDefFoundError-org-htrace/m-p/2351991#M118441 Hi,<BR />Did you post your whole job design screenshot into forum?<BR />Best regards<BR />Sabrina Thu, 11 Aug 2016 09:48:12 GMT Anonymous 2016-08-11T09:48:12Z https://community.qlik.com/t5/Talend-Studio/Impala-HDFS-error-java-lang-NoClassDefFoundError-org-htrace/m-p/2351990#M118440 Hi, <BR />I'm using Talend real time big data edition. <BR />I'm having an error when combining HDFSoutput components with Impala in the same job ( see scenario attached ) <BR />If we split reading from Impala and writing into HDFS into different jobs , it works fine <BR />I do have a workaround but it would be great if we can use both in the same job. <BR />Here is the error :&nbsp; <BR /> <PRE><BR />Exception in thread "main" java.lang.NoClassDefFoundError: org/htrace/Trace<BR /> at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:214)<BR /> at com.sun.proxy.$Proxy7.getFileInfo(Unknown Source)<BR /> at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:752)<BR /> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<BR /> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)<BR /> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)<BR /> at java.lang.reflect.Method.invoke(Method.java:497)<BR /> at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)<BR /> at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)<BR /> at com.sun.proxy.$Proxy8.getFileInfo(Unknown Source)<BR /> at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:2095)<BR /> at org.apache.hadoop.hdfs.DistributedFileSystem$19.doCall(DistributedFileSystem.java:1214)<BR /> disconnected<BR /> disconnected<BR /> disconnected<BR /> disconnected<BR /> at org.apache.hadoop.hdfs.DistributedFileSystem$19.doCall(DistributedFileSystem.java:1210)<BR /> at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)<BR /> at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1210)<BR /> at XX.bv_accountcoms_0_1.BV_AccountComs.tHDFSInput_3Process(BV_AccountComs.java:5696)<BR /> <BR /></PRE> <BR /> <span class="lia-inline-image-display-wrapper" image-alt="0683p000009MBFO.png"><img src="https://community.qlik.com/t5/image/serverpage/image-id/130168i81E8421DC5F82F45/image-size/large?v=v2&amp;px=999" role="button" title="0683p000009MBFO.png" alt="0683p000009MBFO.png" /></span> <BR />It looks like Impala loading a library or plugin that conflicts with HDFS libs <BR />FYI : Talend version is 6.1.1 <BR />This is a standard ( not spark or mapreduce ) job&nbsp; Sat, 16 Nov 2024 10:28:42 GMT https://community.qlik.com/t5/Talend-Studio/Impala-HDFS-error-java-lang-NoClassDefFoundError-org-htrace/m-p/2351990#M118440 Anonymous 2024-11-16T10:28:42Z https://community.qlik.com/t5/Talend-Studio/Impala-HDFS-error-java-lang-NoClassDefFoundError-org-htrace/m-p/2351991#M118441 Hi,<BR />Did you post your whole job design screenshot into forum?<BR />Best regards<BR />Sabrina Thu, 11 Aug 2016 09:48:12 GMT https://community.qlik.com/t5/Talend-Studio/Impala-HDFS-error-java-lang-NoClassDefFoundError-org-htrace/m-p/2351991#M118441 Anonymous 2016-08-11T09:48:12Z https://community.qlik.com/t5/Talend-Studio/Impala-HDFS-error-java-lang-NoClassDefFoundError-org-htrace/m-p/2351992#M118442 Yes that was it. Thu, 11 Aug 2016 15:59:10 GMT https://community.qlik.com/t5/Talend-Studio/Impala-HDFS-error-java-lang-NoClassDefFoundError-org-htrace/m-p/2351992#M118442 Anonymous 2016-08-11T15:59:10Z