Optimize queries used in Snowflake lineage connector #797
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🤔 Why?
It takes an exceedingly long time (> 1.5 hours) to run the Snowflake lineage crawler against large
Snowflake.AccountUnage.QUERY_HISTORY
views.Turns out that similar to
ACCESS_HISTORY
, we must also specify a filter againstSTART_TIME
in order to queryQUERY_HISTORY
efficiently.🤓 What?
START_TIME
filter forQUERY_HISTORY
and use inner JOIN when joining withACCESS_HISTORY
in Snowflake lineage connector🧪 Tested?
Verified that the MCEs before & after the changes are identical. Observed an order of magnitude improvement in performance:
Before:
After:
☑️ Checks
pyproject.toml
.