[IMPALA-3292] Kudu scanner should not fail if KeepAlive request fails

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Kudu_Impala
• Fix Version/s: Impala 2.7.0
• Component/s: Backend
• Target Version: Kudu_Impala
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 02/Apr/16 00:07
• Updated: 22/Mar/23 16:19
• Resolved: 18/Apr/16 18:40

Description

The KeepKuduScannerAlive() function can fail with ServiceUnavailable if it is running against a very heavily-loaded tablet server. This is OK – it should ignore the warning and just try again after a short time, rather than failing the whole query.

Issue Links

• relates to: IMPALA-12014 Output a warning message on failed KeepAlive RPC for a Kudu scanner