This section describes
how to remove SAS Data Quality Accelerator for Hadoop binary files
from the Hadoop cluster manually. You remove SAS Data Quality Accelerator
for Hadoop binaries by using the dq_uninstall.sh executable file.
Note:
-
If you are removing the QKB, you
must do so before removing the binaries. Removing the binaries destroys
the qkb_push.sh executable that is used to remove the QKB. Running
dq_uninstall.sh does not remove the QKB from the cluster. Instructions
for removing the QKB are found in
Removing the QKB from the Hadoop Cluster.
-
This step is not necessary for
Cloudera and Hortonworks distributions in which SAS In-Database Technologies for Hadoop
were installed through the SAS Deployment Manager.
Execute the dq_uninstall.sh
executable file as follows:
cd EPInstallDir/SASEPHome/bin
./dq_uninstall.sh
You must have root or
sudo access to execute dq_uninstall.sh.
The executable file
does not list the names of the host nodes from which it removes the
files by default. To create a list, include the -v flag
in the command.
The dq_uninstall.sh
file removes the SAS Data Quality Accelerator binaries from all Hadoop
nodes by default. Use the -h or -f flag
if you have a need to remove the files from a specific node or group
of nodes.
The dq_uninstall.sh
file supports the following flags:
-?
prints usage information.
-f hostfile
specifies to remove
SAS Data Quality Accelerator files from the host names or IP addresses
that are listed in the specified file only.
–h hostname
specifies to remove
SAS Data Quality Accelerator files from the specified host names or
IP addresses only.
-l logfile
directs status information
to the specified log file, instead of to standard output.
-v
specifies verbose output,
which lists the names of the nodes on which dq_uninstall.sh ran.