DSE Config Issueed

1
votes

Used 4.8.4 installer to install Datastax Enterprise on Ubuntu 12.

On starting dse service, I get an error in the /var/log/cassandra/system.log that says, "can't find /etc/hadoop/taskcontroller.cfg".

I've set every HADOOP_CONF_DIR that I can find to /etc/dse/hadoop.

Two questions: 1) What environment variable is the code using to try to find taskcontroller.cfg

2) Where is the source code, so I could search for taskcontroller.cfg myself?

1
cassandradatastaxdatastax-enterprise
Per this post it seems you may have an incomplete install of DSE stackoverflow.com/questions/19476680/… how did you install? I'm not sure it uses an environmental varuable but in my install the file sits in the /resources/hadoop/conf/taskcontroller.cfg directory 2) hadoop cassandra integration in DSE is proprietary software and I wouldn't recommend trying to code dive the hadoop source for this one (I'm usually for code diving but in this case I think it's not a good use of your time). Are you actually trying to use the bundled DSE Hadoop stuff? - phact

1 Answers

1
votes

Unfortunately taskcontroller.cfg must be in the directory you mentioned, that is /etc/hadoop/taskcontroller.cfg. This file is required only when you use Kerberos authentication. Additionally, there are also other requirements for this file:

  • it must be owned by root
  • it must have the same group as DSE daemon
  • it must be writable only by root
  • it must not be empty

Anyway, the installation script should have setup everything properly. As far as I know, there is no way to customise the location of this file.