[SOLR-13419] Add TRA denoting Infix to TRA collection names

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 9.0
• Fix Version/s: 8.2
• Component/s: SolrCloud
• Assignee: Gus Heck
• Reporter: Gus Heck
• Created: 22/Apr/19 23:07
• Updated: 26/Jul/19 08:56
• Resolved: 20/Jun/19 18:34

Description

One of the things that Dimensional Routed aliases (DRA) will need to be able to do is provide the component routing features based on the route value in the collection name. With multiple dimensions it becomes necessary to pull this information out on a per-dimension basis and the current Time Routed Alias (TRA) collection names have only a simple underscore between the alias name and the route value timestamp. Furthermore the timestamps are variable in length, having truncation of low significance zero fields as an intentional feature (collections falling evenly on the month boundary will omit the day/hour/min fields). This makes recognizing the TRA part of a DRA complex.  This issue will bring TRA's in line with CRA's so that both follow the pattern:

alias_type_routevalue

Specifically the new pattern will use _TRA_ for the type section. This change must not break existing TRA's, and will not update existing collection names, but the two formats have to co-exist peacefully going forward. DRA's will only support time dimensions with the new format however, with a general form of:

alias_typeroutevaluetype_routevalue

Issue Links

• is blocked by: SOLR-13420 Allow Routed Aliases to use Collection Properties instead of core properties