Hi Community, We have seen an unusual behavior on our Hortonworks cluster, where on one of the Host Ambari shows that all the services are down, but in real the services are running properly, this happened even after running the services from Ambari. Following has been checked. 1) Verified the status of services from logs e.g. /var/hadoop/hdfs/hadoop-namenode .... (Shows running) 2) Checked the PID of services from /var/run/<servicename>/<servicename.pid> (The new PID was present). 3) Ambari agents and ambari server was stopped and started as well, but it didn't help. Is there any way to fix this issue? If you need more information, please do let me know. HDP Version: 2.3.4 Ambari Version: 2.1.1 Thanks in Advance. Cheers ! Hammad ... View more

Hi All, Does anybody has documentation for installing Opentsdb on Hortonworks platform with Kerberos enabled? There is an example here to install opentsdb with Hortonworks Sandbox here: https://community.hortonworks.com/articles/4577/use-opentsdb-to-storevisualize-stock-data-on-hdp-s.html It does not seem to work with Kerberos, however I am able to install Opentsdb manually and made the required settings for Kerberos in the configuration file, but I am still having problems while starting the service. Somehow it is not able to read hbase-meta-region and throws following errors. 12:41:48.349 DEBUG [ClientCnxnSocketNIO.findSendablePacket] - deferring non-priming packet: clientPath:null serverPath:null finished:false header:: 0,-11 replyHeader:: 0,0,0 request:: null response:: nulluntil SASL authentication completes. 12:41:48.356 DEBUG [ClientCnxn.readResponse] - Reading reply sessionid:0x1559dca73430bca, packet:: clientPath:/hbase-secure/root-region-server serverPath:/hbase-secure/root-region-server finished:false header:: 3,4 replyHeader:: 3,240518300453,-101 request:: '/hbase-secure/root-region-server,T response:: 12:41:48.356 DEBUG [ClientCnxn.readResponse] - Reading reply sessionid:0x1559dca73430bca, packet:: clientPath:/hbase-secure/meta-region-server serverPath:/hbase-secure/meta-region-server finished:false header:: 4,4 replyHeader:: 4,240518300453,0 request:: '/hbase-secure/meta-region-server,T response:: #ffffffff0001a726567696f6e7365727665723a3136303230ffffff87ffffffab61b48ffffff8827ffffff9a50425546a40a3464657370702d7368726b2d77322e6e6f64652e65752d776573742e6465762d657370702e696e7472616e65742e656f6e2e636f6d10ffffff947d18ffffffa8ffffffa9ffffffd9ffffffc8ffffffd72a100183,s{227633711798,227633714655,1466615355376,1466615687830,1,0,0,0,105,0,227633711798} - Unexpected exception from downstream on [id: 0x0af73a5a, /10.66.48.100:55821 => /10.66.48.102:16020] 12:43:51.593 ERROR [RegionClient.decodeLast] - After decoding the last message on [id: 0x0af73a5a, /10.66.48.100:55821 :> /10.66.48.102:16020], there was still some undecoded bytes in the channel's buffer (which are going to be lost): If somebody else has faced the same error, please guide me how it should be resolved? Thanks in Advance. ... View more

Hi Guys, We setup a new HDP cluster with Ambari version 2.1, with HDP version 2.3.4 and Knox version 0.6, after successful installation of knox for the first time, we tried to configure it with LDAP and tried to restart the knox gateway service, which didn't work and it seemed to be a bug which will be resolved in the next version of Ambari, then we thought to Delete Knox service via REST API and install it once again with Ambari, which is not working now as at the end of setup from Ambari we only get and error message "server error" from Ambari. Any ideas or suggestions that what should be the next step? Thanks in advance. Regards, Hammad Ali ... View more