[jboss-jira] [JBoss JIRA] (JGRP-2409) Add more logging to MERGE3

[Olivier Peyrusse (Jira)]

Olivier Peyrusse created JGRP-2409:
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             Summary: Add more logging to MERGE3
                 Key: JGRP-2409
                 URL: https://issues.jboss.org/browse/JGRP-2409
             Project: JGroups
          Issue Type: Enhancement
    Affects Versions: 4.1.8
            Reporter: Olivier Peyrusse
            Assignee: Bela Ban


MERGE3 comes with a good number of log traces. Combined with logs from TCP, TP, Merger and other protocols, it provides a good understanding of what is happening in the application.
Yet, when it comes to the actual process of merge run by {{ViewConsistencyChecker#_run}}, we lack details about what happens before performing the merge. Particularly, we can track when VIEW_REQ messages are sent but we don't know what happen in the checker when responses are processed:
 - which views were received?
 - when are they received?
 - what is the final result on which the MERGE3 logic is executed
 - is the merge cancelled or aborted?

In my [forked branch|https://github.com/OPeyrusse/JGroups/tree/add-loggin-to-merge3], I added 5 traces that helped me understand what was going on in my cluster.
Tell me if it is the right way to suggest improvements.

Regards



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