[jira] Commented: (DERBY-3552) Handle jar files that are installed when replication is enabled

["V.Narayanan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-3552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12584011#action_12584011 ] 

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

Kim says

>Why would you need to do a replace, or a remove/install, on the slave? If the jars are not installed on the slave,
>I would think you would just do an install.

Narayanan says (in an earlier comment)

>This would mean that allowing jar file operations during deletion would result
>in the system catalog table on the slave having a reference to the jar file that
>does not exist in the replicated database

So even if you do not do an install the derby system will assume the jar to be present and calling
a function that depends on the jar would result in (from an earlier run posted in the comments)

>ij> values myInc (5,10);
>ERROR 42X51: The class 'MyMathFuncs' does not exist or is inaccessible. This can happen if the class is not public.
>ERROR XJ001: Java exception: 'MyMathFuncs: java.lang.ClassNotFoundException'.

Hence you need to replace, remove/install to modify the earlier system catalog entry for that jar.

> 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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