Im assuming you also changed ownership of the driver to sqoop correct, as well as set permissions of /var/lib/sqoop folder to 755. Can you confirm path of sqoop home? ... View more

You should look into Cloudera Manager Rest API, you can call api to stop all services and let CM handle order properly instead of iterating through services.   https://archive.cloudera.com/cm6/6.1.0/generic/jar/cm_api/apidocs/resource_ClustersResource.html  ... View more

You might have a look here: https://dzone.com/articles/how-to-ingest-email-into-apache-hadoop-in-real-tim ... View more

You should look at fe_service_threads, what is your current setting and consider increasing it if needed. When you are seeing exception/timeout on connection have a look at dashboard using following ts_query  'select thrift_server_hiveserver2_frontend_connections_in_use' if this value is approaching the default setting of fe_service_threads then you know your running out of connections. The default setting can be viewed in the service page/varz. ... View more

Not a hard requirement, but using less limits number/size of sessions capable of running concurrently on host.  ... View more

Can you provide output of:  "lvs"  "vgs"  "pvs" ... View more

I would think it should be at DNS level depending on what you set your domain as in cdsw.conf.  ... View more

You could use RCurl   #https://cran.r-project.org/web/packages/RCurl/RCurl.pdf library ( RCurl ) # Get Example uris = c("http://www.omegahat.net/RCurl/index.html", "http://www.omegahat.net/RCurl/philosophy.xml") txt = getURIAsynchronous(uris) # FTP Upload ftpUpload(I("Some text to be uploaded into a file\nwith several lines"), "ftp://login:password@laptop17/ftp/zoe", ) ftpUpload(I("Some text to be uploaded into a file\nwith several lines"), "ftp://laptop17/ftp/zoe", userpwd = "login:password" ) ftpUpload(system.file("examples", "system.png", package = "RCurl"), "ftp://login:password@laptop17/ftp/Election.rda", postquote = c("CWD subdir", "RNFR Election.rda", "RNTO ElectionPolls.rda") )   ... View more

The CDSW Session error most likely related to DNS issue. Did you add DNS wildcard entry? ... View more