@Hefei Li THE DATA ON HDFS WILL STILL BE ENCRYPTED. ... View more

@Saumil Mayani Default value for "fs.trash.interval" in HDP is 360minutes recommended which is 6hrs. Also modifying this value again it depends upon priority of the data deleted. From past experience i usually will suggest to keep the value as 1day ie. 1440minute. fs.trash.checkpoint.interval will be always smaller than "fs.trash.interval". ... View more

@jarhyeon cho please check this - this might be userful to get more clarity - https://integratc.wordpress.com/2015/03/25/hadoop-whose-to-choose-part-2/ ... View more

@shimrit hoori Have you configured VNC on Hortonworks sandbox ? not sure if it by default comes with VNC - in addition to what @Kuldeep Kulkarni mentioned For vnc configuration on linux pls follow -http://www.tecmint.com/install-tightvnc-remote-desktop/ ... View more

@Alexander By default rebooting a datanode does not start/stop/restart all hadoop processes also there is no facility from ambari to do so. You need to write custom script or api to do so.. ... View more

@tunglq it You need to write a custom script[say bash/perl] which will check for mapreduce log files and accordingly you can capture the src/dest of any hdfs file which the job is using. Some more login within the script may help you to track which are currently inuse files on hdfs. ... View more

@tunglq it Are you curios to check for HDFS open files or local FS open files ? ... View more

@Phil G Please find steps below and make sure it works - klist -kt /etc/security/keytabs/spnego.service.keytab kinit -kt /etc/security/keytabs/spnego.service.keytab <Principal> <-- [you will get principal from above command] klist <-- Make sure not you have valid ticket curl --negotiate -u:<anyuser> "http://$<Host_Name>:$<Port>/webhdfs/v1/user/?op=LISTSTATUS" Why "anyuser" in above command ? Pls refer - http://docs.hortonworks.com/HDPDocuments/HDP1/HDP-1.2.4/bk_webhdfs/content/ch_webhdfs-user.html ... View more

Hi @sanjeevan mahajan Please find the link below for ranger ldap integration - https://community.hortonworks.com/content/kbentry/16696/ranger-ldap-integration.html Do let me know if you face any issues while integrating. ... View more