[IMPALA-4633] change broken kudu client default

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 2.8.0
• Fix Version/s: Impala 2.8.0
• Component/s: Backend
• Target Version: Impala 2.8.0
• Assignee: Matthew Jacobs
• Reporter: Matthew Jacobs
• Created: 09/Dec/16 04:28
• Updated: 24/Jan/17 04:16
• Resolved: 15/Dec/16 07:22

Description

We discovered that the current kudu client defaults in the kudu table sink are causing a large number of queries to fail. The current mutation buffer size is 100mb, which is too large and results in too much pressure on kudu. By decreasing the default value of this flag, we found our simple tests to be successful. This change only involves changing the default value of the flag, no new logic.