You have a Hadoop cluster HDFS, and a gateway machine external to the cluster from
which clients submit jobs. What do you need to do in order to run Impala on the cluster and
submit jobs from the command line of the gateway machine?
A.
Install the impalad daemon statestored daemon, and daemon on each machine in the
cluster, and the impala shell on your gateway machine
B.
Install the impalad daemon, the statestored daemon, the catalogd daemon, and the
impala shell on your gateway machine
C.
Install the impalad daemon and the impala shell on your gateway machine, and the
statestored daemon and catalogd daemon on one of the nodes in the cluster
D.
Install the impalad daemon on each machine in the cluster, the statestored daemon and
catalogd daemon on one machine in the cluster, and the impala shell on your gateway
machine
E.
Install the impalad daemon, statestored daemon, and catalogd daemon on each machine
in the cluster and on the gateway node
D
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Answer is D
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d
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Correct answer D
impalad – Run one impalad process on each node in the cluster that has a data node.
statestored – Run one instance of this daemon on a node in your cluster. Most production deployments run this daemon on the namenode.
catalogd – Run one instance of this daemon on a node in your cluster, preferably on the same host as the statestored daemon.
impala-shell – You install this on one or more hosts anywhere on your network, not necessarily data nodes or even within the same cluster as Impala. It can connect remotely to any instance of the Impala daemon.
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D
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D
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