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From "V.Narayanan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3552) Handle jar files that are installed when replication is enabled
Date Mon, 31 Mar 2008 07:28:26 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12583577#action_12583577
] 

V.Narayanan commented on DERBY-3552:
------------------------------------

Documentation related observation
----------------------------------------------

>Path two requires a complete restart of replication after installing jars (including copying
the database
>to the slave location). On the other hand, path 2 ensures that the slave is 100% up to
date and ready for use 
>after a failover has occurred.

I think we should mention that the restart would mean deleting the original slave DB and doing
the replication setup from the beginning.

General observation (not to be documented)
-------------------------------------------------------

>On the other hand, path 2 ensures that the slave is 100% up to date and ready for use
after a failover has 
>occurred.

Path 1 also ensures that the database is up to date and ready for use provided the user following
the re-installation
of jars that would be required after failover.

General 

I feel that stopping and restarting replication everytime a jar is installed is onerous.

But then probably both the steps mentioned can be automated with legerdemain during
development of the application that uses replication.

> Handle jar files that are installed when replication is enabled
> ---------------------------------------------------------------
>
>                 Key: DERBY-3552
>                 URL: https://issues.apache.org/jira/browse/DERBY-3552
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Replication
>    Affects Versions: 10.4.0.0, 10.5.0.0
>            Reporter: V.Narayanan
>


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