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https://issues.apache.org/jira/browse/OOZIE-1536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14071469#comment-14071469
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Shwetha G S commented on OOZIE-1536:
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{quote}
Rerunning a coord action start from CoordActionInputCheck, and this is
important because user can modify coord definitions/properties on fly and rerun
coord action with new definitions.
{quote}
CoordActionInputCheck and further commands on coord action pick the coord xml
from COORD_ACTIONS table, but coord update updates COORD_JOBS table. This means
coord update is effective for the new actions to be materialised and not the
already materialised ones. The re-runs that we are talking about are on the
already completed actions which means they are already materialised and there
is no way of changing the definition of these by coord update. Isn't it?
With coord action re-run, CoordActionInputCheck can run as is and update the
action_xml in COORD_ACTIONS table. CoordActionStartXCommand instead of starting
new workflow all the time, can re-run the existing workflow by overriding input
properties (which might have changed because of new input resolution for latest
etc)
{quote}
We can't rerun a coord action if it's in running state. Are you taking about
sub-workflow?
{quote}
Earlier, when workflow state changed, the corresponding coord action status
change was queued. So, there was delay in propagating the status. So, there
were instances when workflow was in running state, but coord action in killed
state(because of wf re-run). So, coord action re-run in this case would launch
another workflow
> Coordinator action reruns start a new workflow
> ----------------------------------------------
>
> Key: OOZIE-1536
> URL: https://issues.apache.org/jira/browse/OOZIE-1536
> Project: Oozie
> Issue Type: Improvement
> Reporter: Srikanth Sundarrajan
>
> Coordinator action reruns start a new workflow and if existing workflow for
> the action is in running state, the same is not checked. Coord rerun can
> possibly do a workflow re-run to prevent this.
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