[KUDU-2131] Tablet copy session may expire before completion for large tablet

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.5.0
• Fix Version/s: 1.5.0
• Target Version/s: 1.5.0
• Code Review: https://gerrit.cloudera.org/#/c/7952/
• Assignee: Hao Hao
• Reporter: Hao Hao
• Created: 02/Sep/17 05:50
• Updated: 05/Sep/17 21:13
• Resolved: 05/Sep/17 04:21

Description

KUDU-1726 introduced an optimization to do a bulk sync-to-disk once the tablet copy operation is complete. However, when tested in a large cluster, I found disk synchronization in batches can result in the tablet session expires before the synchronization complete. There is a flag '--tablet_copy_idle_timeout_ms' to control the amount of time without activity before a tablet copy session expires, but it is tagged as hidden(not user-facing).

Issue Links

• is related to: KUDU-2134 Defer block transaction commit to the end of a tablet copy