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https://issues.apache.org/jira/browse/SOLR-11299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16204809#comment-16204809
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David Smiley commented on SOLR-11299:
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bq. the cost of DateFormat.parse() of some number of partition names for every
doc
Ah, yes. So it seems we could grab the Aliases instance and if it's the very
same one as the last instance, then the previous parsing is still valid. In
other words, cache the parsing.
> Time partitioned collections (umbrella issue)
> ---------------------------------------------
>
> Key: SOLR-11299
> URL: https://issues.apache.org/jira/browse/SOLR-11299
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Reporter: David Smiley
> Assignee: David Smiley
>
> Solr ought to have the ability to manage large-scale time-series data (think
> logs or sensor data / IOT) itself without a lot of manual/external work. The
> most naive and painless approach today is to create a collection with a high
> numShards with hash routing but this isn't as good as partitioning the
> underlying indexes by time for these reasons:
> * Easy to scale up/down horizontally as data/requirements change. (No need
> to over-provision, use shard splitting, or re-index with different config)
> * Faster queries:
> ** can search fewer shards, reducing overall load
> ** realtime search is more tractable (since most shards are stable --
> good caches)
> ** "recent" shards (that might be queried more) can be allocated to
> faster hardware
> ** aged out data is simply removed, not marked as deleted. Deleted docs
> still have search overhead.
> * Outages of a shard result in a degraded but sometimes a useful system
> nonetheless (compare to random subset missing)
> Ideally you could set this up once and then simply work with a collection
> (potentially actually an alias) in a normal way (search or update), letting
> Solr handle the addition of new partitions, removing of old ones, and
> appropriate routing of requests depending on their nature.
> This issue is an umbrella issue for the particular tasks that will make it
> all happen -- either subtasks or issue linking.
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