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https://issues.apache.org/jira/browse/UIMA-3129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jim Challenger closed UIMA-3129.
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> DUCC RM: Reenable purge bit
> ---------------------------
>
> Key: UIMA-3129
> URL: https://issues.apache.org/jira/browse/UIMA-3129
> Project: UIMA
> Issue Type: Bug
> Components: DUCC
> Reporter: Jim Challenger
> Assignee: Jim Challenger
> Fix For: 1.0-Ducc
>
>
> We had disabled RM's 'purge' bit because of a race with the Agent. Changes
> to the agent eliminate the race.
> The 'purge' bit is set when a machine misses some number of heartbeats. RM
> considers the node "down" and evict the shares, similar to preemption.
> Without the 'purge' bit the OR will wait for confirmation from agents that
> the processes are stopped, but if the agent is not responding, the
> confirmation may never come and the processes will be "stuck".
> The 'purge' bit is used to tell OR that the shares are being evicted because
> of suspected agent death, so OR can clean up right away and not look for
> confirmation.
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