[jira] [Commented] (UIMA-3857) DUCC Orchestrator (OR) should should checkpoint and restore publication sequence number.

["Lou DeGenaro (JIRA)" <de...@uima.apache.org>]

    [ https://issues.apache.org/jira/browse/UIMA-3857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14019718#comment-14019718 ] 

Lou DeGenaro commented on UIMA-3857:
------------------------------------

Code delivered.

OR now keeps a file state/orchestrator.json comprising sequence numbers for State and AbbreviatedState publications.

This file can be erased when doing cold or warm starts, but should be kept when doing hot (re-)start or Orchestrator.

> DUCC Orchestrator (OR) should should checkpoint and restore publication sequence number.
> ----------------------------------------------------------------------------------------
>
>                 Key: UIMA-3857
>                 URL: https://issues.apache.org/jira/browse/UIMA-3857
>             Project: UIMA
>          Issue Type: Bug
>          Components: DUCC
>            Reporter: Lou DeGenaro
>            Assignee: Lou DeGenaro
>            Priority: Minor
>             Fix For: 1.1.0-Ducc
>
>
> If only OR reboots while Agents and perhaps other daemons remain running, the OR publication sequence number is reset to zero.  As a result, the receivers of these OR publications may reject them as being out-of-sequence.



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