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From "Kevin Risden (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-11444) Improve Aliases.java and comma delimited collection list handling
Date Thu, 12 Oct 2017 12:23:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-11444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16201866#comment-16201866
] 

Kevin Risden commented on SOLR-11444:
-------------------------------------

Changes for SQL sounds reasonable to me. I think streaming expressions support aliases now.
When it was originally implemented not sure that was the case.

> Improve Aliases.java and comma delimited collection list handling
> -----------------------------------------------------------------
>
>                 Key: SOLR-11444
>                 URL: https://issues.apache.org/jira/browse/SOLR-11444
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: SolrCloud
>            Reporter: David Smiley
>            Assignee: David Smiley
>         Attachments: SOLR_11444_Aliases.patch, SOLR_11444_Aliases.patch
>
>
> While starting to look at SOLR-11299 I noticed some brittleness in assumptions about
Strings that refer to a collection.  Sometimes they are in fact references to comma separated
lists, which appears was added with the introduction of collection aliases (an alias can refer
to a comma delimited list).  So Java's type system kind of goes out the window when we do
this.  In one case this leads to a bug -- CloudSolrClient will throw an NPE if you try to
write to such an alias.  Sending an update via HTTP will allow it and send it to the first
in the list.
> So this issue is about refactoring and some little improvements pertaining to Aliases.java
plus certain key spots that deal with collection references.  I don't think I want to go as
far as changing the public SolrJ API except to adding documentation on what's possible.



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