3 Commits

Author	SHA1	Message	Date
Aditya Manthramurthy	fd4e15c116	Flush the records staging buffer periodically (#7193) ... - Staging buffer is flushed every 500ms. In cases where the result records are slowly generated (e.g. when a where condition matches very few records), this change causes the server to send results even though the staging buffer is not full. - Refactor messageWriter code to use simpler channel based co-ordination instead of atomic variables.	2019-02-06 16:03:05 +05:30
Aditya Manthramurthy	91c839ad28	Use a buffer to collect SQL Select result rows (#7158) ... Batching records into a single SQL Select message in the response leads to significant speed up as the message header overhead is made negligible. This change leads to a speed up of 3-5x for queries that select many small records.	2019-01-28 20:00:18 -08:00
Bala FA	b0deea27df	Refactor s3select to support parquet. (#7023) ... Also handle pretty formatted JSON documents.	2019-01-08 16:53:04 -08:00