[IMPALA-4273] Investigate slow transport creation on Kerberized cluster

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Information Provided
• Affects Version/s: Impala 2.6.0
• Component/s: Distributed Exec
• Labels: performance scalability
• Target Version: Impala 2.10.0
• Assignee: Mostafa Mokhtar
• Reporter: Mostafa Mokhtar
• Created: 11/Oct/16 15:28
• Updated: 23/Aug/17 22:38
• Resolved: 23/Aug/17 22:38

Description

Initial connection creation for queries with 100s or 1000s of fragments on large Kerberized clusters can take several minutes which results in under utilization of the cluster during the ramp-up phase, once the connections are cache queries startup quickly.