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04-29-2021
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06-21-2021
12:26 AM
Hi @ChethanYM, I tried the following command again another error [root@MASTER ~]# su - hdfs Last login: Sun Jun 20 17:27:39 UTC 2021 on pts/5 [hdfs@MASTER ~]$ sudo -u hdfs hdfs dfsadmin -safemode leave sudo: hdfs: command not found [hdfs@MASTER ~]$ id hdfs uid=30008(hdfs) gid=30009(hdfs) groups=30009(hdfs) [hdfs@MASTER ~]$
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06-20-2021
10:48 AM
Hi @ChethanYM , when i created hdfs user i didn't create with a password but when i execute this is what i'm asked. i used the root password but it doesn't pass either. [hdfs@MASTER ~]$ hdfs dfsadmin -safemode leave 21/06/20 17:30:15 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable safemode: Access denied for user hdfs. Superuser privilege is required [hdfs@MASTER ~]$ sudo hdfs dfsadmin -safemode leave [sudo] password for hdfs: sorry, try again. [sudo] password for hdfs: sorry, try again. [sudo] password for hdfs:
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06-20-2021
07:04 AM
When I execute this command this is the output [hdfs@MASTER ~]$ hdfs dfs -mkdir /user 21/06/20 13:51:54 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable mkdir: Cannot create directory /user. Name node is in safe mode
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06-20-2021
04:26 AM
I installed hadoop-2.7.1 on a centos7 operating system. when I execute the command # hdfs dfs -mkdir /user/Juste . I get an error [hdfs@MASTER ~]$ hdfs dfs -mkdir /user/Juste 21/06/20 11:04:04 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable mkdir: `/user/Juste': No such file or directory
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Apache Hadoop
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HDFS
06-17-2021
12:24 PM
Hi Everyone,The virtualization system I use is VMWare I use HDP2.3 Sandbox, Centos release7 as OS, with hadoop2.7.1. J'ai installé hadoop sur Sandbox, l'installation s'est bien passée. Lorsque j'exécute la commande suivante #./start-all.sh , j'ai un problème de refus de connexion de ssh. [root@MASTER sbin]# ./start-all.sh Ce script est obsolète. Au lieu d' utiliser start-dfs.sh et start-yarn.sh 21/06/17 19:06:27 WARN util.NativeCodeLoader: Impossible de charger la bibliothèque native Hadoop pour votre plate - forme ... en utilisant des classes java-builtin le cas échéant namenodes de départ sur [MASTER] mot de passe de root@master : MASTER : démarrage de namenode, connexion à /usr/local/hadoop/logs/hadoop-root-namenode-MASTER.out localhost : ssh : connexion à l'hôte localhost port 22 : connexion refusée Démarrage des namenodes secondaires [0.0.0.0] 0.0.0.0 : ssh : se connecter à l'hôte 0.0.0.0 port 22 : Connexion refusée 21/06/17 19:06:49 WARN util.NativeCodeLoader : Impossible de charger la bibliothèque native-hadoop pour votre plateforme... en utilisant des classes intégrées java, le cas échéant démarrage des démons fil démarrage du gestionnaire de ressources, connexion à /usr/local/hadoop/logs/yarn-root-resourcemanager-MASTER.out localhost : ssh : se connecter à l'hôte localhost port 22 : connexion refusée
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HDFS
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Hortonworks Data Platform (HDP)
06-14-2021
09:01 AM
Hi @MattWho by combine i meant drag a connection from GetFile to ExecuteProcess or ExecuteStreamCommand i have a flowfile which is composed of GetFile processor which collects the data and passes it to MergeContent processor to get a single file of several lines. i want to filter its lines and then classify them . and i was thinking of using ExecuteProcess or ExecuteStreamCommand. you can also give me a suggestion.
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06-14-2021
02:52 AM
Hi Everyone, can we combine the nifi processors in this sense GetFile-->ExecuteProcess or GetFile --> ExecuteStreamCommand if yes how can we do it?
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Apache NiFi
06-10-2021
05:16 AM
If I have several data sources on the same server can I configure ListSFTP and FetchSFTP to collect the data at the same time? if yes how can we do it. If I have several servers on which I have to collect data, can I configure ListSFTP and FetchSFTP to collect the data at the same time? if yes how can we do it.
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Apache MiNiFi
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Apache NiFi
06-10-2021
05:05 AM
try this: open your cmd: change directory with : cd C:\kafka_2.11-2.0.0 if you change directory you will do this C:\kafka_2.11-2.0.0> bin\zookeeper-server-start.bat config\zookeeper.properties C:\kafka_2.11-2.0.0> bin\kafka-server-start.bat config\server.properties if you don't change directory do this. >C:\kafka_2.11-2.0.0\bin\zookeper-server-start.bat C:\kafka_2.11-2.0.0\config\zookeeper.properties > C:\kafka_2.11-2.0.0\bin\kafka-server-start.bat C:\kafka_2.11-2.0.0\config\server.properties
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