Nishant Bangarwa created HIVE-20279: ---------------------------------------
Summary: HiveContextAwareRecordReader slows down Druid Scan queries. Key: HIVE-20279 URL: https://issues.apache.org/jira/browse/HIVE-20279 Project: Hive Issue Type: Improvement Reporter: Nishant Bangarwa Assignee: Nishant Bangarwa Attachments: scan2.svg HiveContextAwareRecordReader add lots of overhead for Druid Scan Queries. See attached flame graph. Looks like the operations for checking for existence of footer/header buffer takes most of time For druid and other storage handlers that do not have footer buffer we should skip the logic for checking the existence for storage handlers atleast. -- This message was sent by Atlassian JIRA (v7.6.3#76005)