[IMPALA-10508] Add metrics for reading from remote scratch paths

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Epic Link: Spill to S3 Support
• Epic Color: ghx-label-11
• Assignee: Yida Wu
• Reporter: Yida Wu
• Created: 14/Feb/21 22:58
• Updated: 29/Nov/22 10:40
• Resolved: 23/Nov/22 11:09

Description

For reading data from a remote scratch path, the data can be fetched from the local buffer if the file hasn't been uploaded yet, or fetched from remote filesystem.

The metrics can help to identify how much data is read from the local buffer, how much is from the remote filesystem.

Issue Links

• duplicates: IMPALA-10791 Add Support of Batch Reading for Spilling to Remote FS