[HBASE-17489] ClientScanner may send a next request to a RegionScanner which has been exhausted

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.3.0, 1.4.0, 2.0.0
• Fix Version/s: 1.4.0, 1.3.1, 2.0.0
• Component/s: Client, Scanners
• Hadoop Flags: Reviewed
• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 19/Jan/17 05:31
• Updated: 07/May/19 16:11
• Resolved: 22/Jan/17 08:59

Description

Found it when implementing HBASE-17045. Seems the final result of the scan is correct but no doubt the logic is broken. We need to fix it to stop things get worse in the future.

Issue Links

• breaks: HBASE-18042 Client Compatibility breaks between versions 1.2 and 1.3
• breaks: HBASE-18000 Make sure we always return the scanner id with ScanResponse
• is related to: HBASE-17045 Unify the implementation of small scan and regular scan
• is related to: HBASE-17505 Do not issue close scanner request if RS tells us there is no more results for this region
• links to: reviewboard