[HBASE-17143] Scan improvement

• Type: Umbrella
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.4.0, 2.0.0
• Fix Version/s: 2.0.0-alpha-4, 2.0.0
• Component/s: Client, Scanners
• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 21/Nov/16 13:55
• Updated: 07/May/19 16:11
• Resolved: 02/Nov/17 13:44

Description

Parent issues to track some improvements of the current scan.

Timeout per scan, unify batch and allowPartial, add inclusive and exclusive of startKey and endKey, start scan from the middle of a record, use mvcc to keep row atomic when allowPartial, etc.

Issue Links

• is related to: HBASE-16973 Revisiting default value for hbase.client.scanner.caching

Sub-Tasks

• Correct the semantic of batch and partial: Resolved
• Pass mvcc to client when scan: Resolved
• Unify the implementation of small scan and regular scan for sync client: Resolved
• Add inclusive/exclusive support for startRow and endRow of scan for sync client: Resolved
• Expose ScanMetrics with ResultScanner rather than Scan: Resolved
• Add partial result support for small/limited scan: Resolved
• Use mayHaveMoreCellsInRow instead of isPartial: Resolved
• Backport ScanResultCache related code to branch-1: Resolved