[HDFS-12658] Lease renewal causes connection flapping

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.0-alpha
• Component/s: hdfs-client
• Assignee: Unassigned
• Reporter: Daryn Sharp
• Created: 13/Oct/17 16:26
• Updated: 13/Oct/17 16:28

Description

Adding a dfsclient to the lease renewer use the minimum of 1/2 the soft timeout vs. 1/2 the client's timeout (when the client closes an idle connection). Both default to 1m, so clients with open files that are otherwise not making calls to the NN will experience connection flapping. Re-authentication is unnecessarily taxing on the ipc layer.