eImpalaImpala's tests depend on a significant number of test databases that are used by various tests. This page aims to provide an introduction and some tips for working with this test data.
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Sometimes while developing it is useful to load a new table or reload a modified table without redoing the whole data load. It is often possible to do incremental loads using bin/load-data.py. Note that the Impala minicluster has to be started in order to execute this script of load-data.py, i.e., we have to execute $IMPALA_HOME/bin/start-impala-cluster.py first.
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# Reload a specific table for specific file formats. # -f forces reloading the table even if it exists. ./bin/load-data.py -f -w functional-query --table_names=decimal_rtf_tiny_tbl --table_formats=text/none,kudu/none --exploration_strategy=exhaustive # Load any missing tables from the functional data set (which is used by the functional-query workload) # Omitting -f means that data is not reloaded if the script detects that it is present. # We specify exhaustive because exhaustive tables are always used for the functional data set. ./bin/load-data.py -w functional-query --exploration_strategy=exhaustive # Reload all versions of the TPC-H nation table for "core" file formats. ./bin/load-data.py -w tpch --table_names=nation -f |
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