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02-09-2016
05:48 PM
@Prakash Punj you are welcome but make sure you start zookeeper first as a lot of services rely on ZK before anything else.
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02-09-2016
05:45 PM
1 Kudo
@Greenhorn Techie 1. Nifi is not a replacement for Oozie, you can't schedule jobs though you can run cron commands and execute shell commands within Nifi. It's not a start and stop operation, it continuously runs until you explicitly stop it. You can take a look at rest api to start and stop workflow if that's what you're asking. In the next release, nifi will have scripting capabilities so essentially you can execute groovy, shell, maybe python and maybe pig but I cannot comment on the last two. 2. https://community.hortonworks.com/content/kbentry/886/securing-nifi-step-by-step.html 3. file a jira
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02-09-2016
05:26 PM
@Roberto Sancho The NFS Gateway for HDFS allows clients to mount HDFS and interact with it through NFS, as if it were part of their local file system. The gateway supports NFSv3. After mounting HDFS, a user can:
Browse the HDFS file system through their local file system on NFSv3 client-compatible operating systems. Upload and download files between the HDFS file system and their local file system. Stream data directly to HDFS through the mount point. (File append is supported, but random write is not supported.) Prerequisites The NFS Gateway machine must be running all components that are necessary for running an HDFS client, such as a Hadoop core JAR file and a HADOOP_CONF directory. The NFS Gateway can be installed on any DataNode, NameNode, or HDP client machine. Start the NFS server on that machine. Here are steps https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.2/bk_hdfs_nfs_gateway/content/user-guide-hdfs-nfs-instructions.html
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02-09-2016
04:12 PM
@Ahmad Debbas take a look at information for industry solutions on our website. Here's one http://hortonworks.com/industry/government/. To get started, please let us know where you're located and we can get you in contact with a representative in your area. Actually, if you go to the link I provided and click on contact sales at the bottom, you will directly connect with an expert in your area.
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02-09-2016
03:36 PM
same log4j rules apply, it's no different than what you would do without Ambari. @sanjeevan mahajan
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02-09-2016
03:27 PM
@sanjeevan mahajan every config has a log4j properties section on every service, go to the service you need and adjust log4.properties configuration as desired. here you go https://community.hortonworks.com/articles/8882/how-to-control-size-of-log-files-for-various-hdp-c.html
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02-09-2016
03:24 PM
go through each server one by one, put services in maintenance mode on that host and stop them. Upgrade OS to latest minor version, reboot if necessary and restart services. Go to the next. @Ram D
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02-09-2016
03:22 PM
here's an old one, can't find new https://ambari.apache.org/1.2.1/installing-hadoop-using-ambari/content/ambari-chap8.html
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02-09-2016
03:04 PM
no ambari-server doesn't stop all services when it stops. Yes there's a dependency order in which services get started. Zookeeper, HDFS, YARN, Mapreduce, etc. in that order @Prakash Punj
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