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From "David Smiley (JIRA)" <>
Subject [jira] [Commented] (SOLR-11487) Collection Alias metadata for time partitioned collections
Date Mon, 23 Oct 2017 21:39:00 GMT


David Smiley commented on SOLR-11487:

BTW FWIW RE TimeOut... IMO it'd be more nice to have a static utility method named something
like callWithRetry(long intervalSleep, long timeout, TimeUnit unit, Callable<V> callable)
throws Exception

> Collection Alias metadata for time partitioned collections
> ----------------------------------------------------------
>                 Key: SOLR-11487
>                 URL:
>             Project: Solr
>          Issue Type: Sub-task
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: SolrCloud
>            Reporter: David Smiley
>         Attachments: SOLR_11487.patch, SOLR_11487.patch
> SOLR-11299 outlines an approach to using a collection Alias to refer to a series of collections
of a time series. We'll need to store some metadata about these time series collections, such
as which field of the document contains the timestamp to route on.
> The current {{/aliases.json}} is a Map with a key {{collection}} which is in turn a Map
of alias name strings to a comma delimited list of the collections.
> _If we change the comma delimited list to be another Map to hold the existing list and
more stuff, older CloudSolrClient (configured to talk to ZooKeeper) will break_.  Although
if it's configured with an HTTP Solr URL then it would not break.  There's also some read/write
hassle to worry about -- we may need to continue to read an aliases.json in the older format.
> Alternatively, we could add a new map entry to aliases.json, say, {{collection_metadata}}
keyed by alias name?
> Perhaps another very different approach is to attach metadata to the configset in use?

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