DBT-747: Removing the describe table statement each tables rather use the show queries to gather metadata #189
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niteshy
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Describe your changes
We have identified a bug where dbt-impala is trying to scan all schemas mentioned in dbt-project.yml and run a describe table on all tables of those schemas to figure out whether it's a view or a table that is causing large delays in the execution.
The problem was that Impala didn't implement the show views command which was fixed as part of https://issues.apache.org/jira/browse/IMPALA-3268.
Inorder to start using this adapter going further after this fix, we expect users to include this patch: https://issues.apache.org/jira/browse/IMPALA-3268
Internal Jira ticket number or external issue link
https://jira.cloudera.com/browse/DBT-747
Testing procedure/screenshots(if appropriate):
https://gist.github.com/vamshikolanu/977f79dc14acf16d512058410074718f
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