Apache Drill Query Execution PLAN Doesn't use mongo db index

[dwevedivaibhav]

Hi Team,

I am trying to execute the millions of record query from mongo db storage with timestamp filter, it getting slow even though i created the index of timestamp in mongo collection, but its taking so long time to execute and some time time its failing also due to huge record.

Please find the sample query which i am executing from apache drill

select * FROM mongo.sampletable
WHERE SentTime >= TO_TIMESTAMP('2023-08-10 00:00:00', 'yyyy-MM-dd HH:mm:ss')
AND SentTime < TO_TIMESTAMP('2023-08-17 00:00:00', 'yyyy-MM-dd HH:mm:ss')
LIMIT 10

[jnturton]

I wonder if your constant timestamp expressions are being folded by the planner. Do you get the same performance from the next query?

SELECT * FROM mongo.sampletable
WHERE SentTime >= TIMESTAMP '2023-08-10 00:00:00'
AND SentTime < TIMESTAMP '2023-08-17 00:00:00'
LIMIT 10

[dwevedivaibhav]

Yes Same problem @jnturton

[jnturton]

Duplicate of #2906.