Database Reference
In-Depth Information
Once you have made sure that the Hive metastore is available in your Cloudera Ha-
doop cluster, you can start the Impala installation to all DataNodes as follows:
• Make sure that you have Cloudera public repo set in your OS, so Impala spe-
cific packages can be downloaded and installed on your machine. If you do
not have the Cloudera specific public repo set, please visit the Cloudera web-
site to get your OS specific information.
• After that, you will need to install the following three packages on your ma-
chine:
• Impala
• Impala-server
• Impala-state-store
• Then, copy
hive-site.xml
,
core-site.xml
, and
hdfs-site.xml
Ha-
doop configuration files to the
/etc/impala/conf
folder, which is the Im-
pala configuration folder.
• As per Cloudera advice, it is not a good choice to install Impala in Namenode,
so please do not do so, because any problem caused by Impala may bring
your Hadoop cluster down.
• Finally, install Impala shell to a single DataNode or a network-connected ex-
ternal machine on which you have decided to run queries.
Tip
Impala is also compiled and tested to run on the MapR Hadoop distribution, so if
you are interested in running Impala on MapR, please visit the following link:
