Log on to SAS Visual
Analytics Administrator and perform the following steps:
-
Select
LASRMonitor Resources and sure that the additional machines appear in the
Real-Time
View.
-
Select
LASRManage Servers and start each of the servers.
-
Select
ToolsExplore HDFS and review the block distribution.
Any tables that are loaded from
HDFS cannot initially use the additional hardware because the blocks have not been replicated
to the additional machines. Within SAS Visual Analytic Administrator, you can view
the block distribution from the
HDFS tab to confirm that blocks
are on the original machines only.
Hadoop includes a balancer
process that can move blocks to under-utilized machines. The process
is intentionally slow so that resource consumption is low and so that
it does not interfere with other tasks on the cluster. To begin the
balancing process:
./hadoop-daemon.sh start balancer
As an alternative, if adding the data to HDFS again is possible, then you can delete
files with SAS Visual Analytics Administrator
and then add them back.