[DRILL-7799] REST Queries Fail If Caching is enabled

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.17.0
• Fix Version/s: 1.19.0
• Component/s: Storage - Other
• Assignee: Charles Givre
• Reporter: Charles Givre
• Created: 29/Oct/20 02:17
• Updated: 16/Dec/20 14:28
• Resolved: 16/Dec/20 14:28

Description

When caching is enabled, queries will fail if the cache directory already exists.  This PR checks to see if the cache directory already exists and if so does not attempt to create it.

Additionally, this query adds a limit pushdown to the storage plugin.