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Bug #20184
closed
Do small batches and small commits in UpdatePriority.run_update_thread
Story points:
1.0
Description
Partial fix for #20183.
We are seeing a deadlock/starvation issue where a container, whose crunch-run process has ended, cannot be finalized even with repeated attempts by arvados-dispatch-cloud (5m postgresql statement timeout), because its "select for update" is blocked by an UpdatePriority thread doing CPU- and memory-intensive things while keeping a database transaction open with uncommitted updates.
The idea here is to reduce the duration of open transactions in UpdatePriority threads.
Updated by Tom Clegg almost 2 years ago
So far, due to Rails/ActiveRecord transaction magic and extra magic during tests, this seems harder than #20183, not easier.
Updated by Tom Clegg almost 2 years ago
- Status changed from In Progress to Rejected
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