THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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They are listed here separately on this page: Deprecations
Solr 10+ Roadmap
TBD: Ongoing discussion on Overseer vs Distributed State Updates. Efficient state updates.
Apache Curator; usage TBD.
OpenAPI: complete coverage.
Apache HttpClient no longer included with Solr; not a dependency of SolrJ either (will be an optional choice for some time maybe)
No longer in 10:
- Apache HttpClient
- Custom V2 API annotations/framework – use JAX-RS instead.
Solr 9x
| Item | Description | Contributors | Theme | Jira |
|---|
| HTTP 1 → HTTP 2 | Switch the remaining HTTP 1 usage within Solr to HTTP 2. Apache HttpClient should no longer be used on the server. | Smiley | ||
| Modularize SolrJ | SolrJ should be lighter-weight (smaller) for more users; fewer dependencies. Add modules for some dependencies and functionality. | Smiley, Jan, Houston, others | ||
| Use JAX-RS | JAX-RS based V2 API definitions; use more and more. | Jason |
Solr 9.0
The theme of this release is to use Lucene 9.0 and to introduce some major frameworks.
We should not remove all features/APIs deprecated in 8.x yet, to give users a path to upgrade to 9.x without all the extra noise. Deprecated features can be removed in a later 9.x release, when the new alternative is solid and well known.
| Item | Description | Contributors | Theme | Jira | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| First party packages & Slim Solr distribution | Solr should have first party packages, and a slim Solr tarball that doesn't have the first party packages | Ishan, Noble, Jan, et. al. | Lean Solr Core |
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| V2 API to be the default | Ref guide docs should use V2, where necessary we build V2 APIs, switch SolrJ to use V2 APIs, etc. | Usability | ||||||||||||||||||||||
| Autoscaling / Replica assignment V2 | A new pluggable framework replaces current autoscaling | Andrzej, Ilan, Noble | Lean Solr Core |
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| HDFS moved away from Solr-Core | Build a first party package out of HDFS support | Istvan Farkas, Gezapeti | Lean Solr Core | |||||||||||||||||||||
| Remove Ant support | Tech-debt |
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| Index Lifecycle Management | Automatically move indices between hot, warm and cold phases | Atri Sharma | Feature | |||||||||||||||||||||
| POJOs instead of loosely typed objects | Start using POJOs/interfaces wherever possible in public APIs where ever possible | Noble Paul | ||||||||||||||||||||||
| Remove Filter.java from Solr | Filter.java is a legacy relic from earlier Lucene days. Solr uses Filter in a variety of places where it can use other constructs or in some cases we need to make new constructs. In some cases like TwoPhaseIterator, this is an optimization. | David Smiley | Tech-debt |
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Solr 8.9
Last version before 9.0?
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