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Bug 974319 - clear_running_commands XML-RPC call fails with MemoryError
Summary: clear_running_commands XML-RPC call fails with MemoryError
Alias: None
Product: Beaker
Classification: Community
Component: lab controller
Version: 0.12
Hardware: Unspecified
OS: Unspecified
unspecified vote
Target Milestone: 0.13.x
Assignee: Nick Coghlan
QA Contact: tools-bugs
Depends On:
TreeView+ depends on / blocked
Reported: 2013-06-14 00:21 UTC by Nick Coghlan
Modified: 2018-02-06 00:41 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 974352 (view as bug list)
Last Closed: 2013-07-11 02:44:31 UTC

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Bugzilla 974352 None None None Never
Red Hat Bugzilla 975220 None None None Never

Internal Links: 974352 975220

Description Nick Coghlan 2013-06-14 00:21:05 UTC
Description of problem:

beaker-provision was restarted with 51 Running operations in the command queue. It failed to restart because the "clear_running_commands" call back to the main server was failing with MemoryError.

Version-Release number of selected component (if applicable):


How reproducible:

Always (with those 51 commands listed as "Running" on the server)

Steps to Reproduce:

Actual results:

XML-RPC call reports MemoryError and beaker-provision fails to start

Expected results:

Running commands are marked as Failed (aborting the associated recipes), beaker-provision starts up and begins processing commands.

Additional info:

Comment 1 Nick Coghlan 2013-06-20 04:48:44 UTC
Investigation has suggested that this only arises if many stale commands (see bug 974352) have accumulated in the server's command queue, and then the provisioning daemon on the lab controller is restarted.

Due to the lack of a direct link between commands and recipes, it's also risky to execute the state update callbacks for such stale commands - if the system has since been reallocated, the stale callback may end up aborting an unrelated recipe.

Accordingly, the "clear_running_commands" operation will be updated to directly execute the following SQL before moving on to handling more recent commands:

  UPDATE command_queue
  JOIN activity ON
  SET command_queue.status="Aborted"
  WHERE command_queue.status = "Running"
    AND activity.created < DATE_ADD(UTC_TIMESTAMP(), INTERVAL -1 DAY);

Any remaining commands (those less than 24 hours old) will then be processed in independent transactions.

Comment 4 Nick Coghlan 2013-06-24 05:22:51 UTC
On Gerrit:

Comment 7 xjia 2013-06-28 02:23:03 UTC
For this bug, I will verify it on July 2nd while doing acceptance test.

Comment 9 Amit Saha 2013-07-11 02:44:31 UTC
Beaker 0.13.2 has been released. (

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