[HBASE-28540] Cache Results in org.apache.hadoop.hbase.rest.client.RemoteHTable.Scanner

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.7.0, 3.0.0-beta-2, 2.6.1, 2.5.9
• Component/s: REST
• Labels: pull-request-available
• Assignee: Istvan Toth
• Reporter: Istvan Toth
• Created: 22/Apr/24 07:52
• Updated: 08/Jun/24 06:41
• Resolved: 07/Jun/24 08:09

Description

The implementation of org.apache.hadoop.hbase.rest.client.RemoteHTable.Scanner
is very inefficient, as the standard next() methods makes separate a http request for each row.

Performance can be improved by not specifying the row count in the REST call and caching the returned Results.

Chunk size can still be influenced by scan.setBatch();

Issue Links

• is depended upon by: HBASE-28550 Provide working benchmark tool for REST server
• links to: GitHub Pull Request #5846