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Posted to dev@lucene.apache.org by "Peter Rusko (JIRA)" <ji...@apache.org> on 2018/03/01 00:46:00 UTC
[jira] [Commented] (SOLR-11960) Add collection level properties
[ https://issues.apache.org/jira/browse/SOLR-11960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16381323#comment-16381323 ]
Peter Rusko commented on SOLR-11960:
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{quote}BTW for this issue I personally would have chosen to store collection properties on the state.json for the collection rather than put this somewhere else. Consider all the other internal properties which are already in state.json (e.g. replicationFactor etc.). Was this considered? Why not? Pros are simplicity of backup and no need to delete with collection deletion, and using the same watcher mechanism?
{quote}
Yes, I considered it. There are two reasons for choosing a separate json. First the frequency of the change is different. Collection properties would change way less frequently than state.json and not parsing out the properties blob on every state change seemed the right way to go. But more importantly, state.json changes should go via the overseer, which seemed to be a bit of an overkill here.
> Add collection level properties
> -------------------------------
>
> Key: SOLR-11960
> URL: https://issues.apache.org/jira/browse/SOLR-11960
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Peter Rusko
> Assignee: Tomás Fernández Löbbe
> Priority: Major
> Attachments: SOLR-11960.patch, SOLR-11960.patch, SOLR-11960.patch, SOLR-11960.patch
>
>
> Solr has cluster properties, but no easy and extendable way of defining properties that affect a single collection. Collection properties could be stored in a single zookeeper node per collection, making it possible to trigger zookeeper watchers for only those Solr nodes that have cores of that collection.
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