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In Solr 8.x, there have been some notable deprecations in Solr.  However, some of them are merely moving elsewhere.  Here is the status of some of those efforts:

ComponentStatus in Solr 8.xStatus in Solr 9.0Package StatusPackage locationRemarks
SolrClient impls that depend on Apache HttpClient

Deprecate:

SOLR-15223 - Getting issue details... STATUS

n/a
Use the SolrClient impls based on Jetty HTTP client
Data Import HandlerDeprecated in 8.6

SOLR-14783 - Getting issue details... STATUS

Community package releasedhttps://github.com/rohitbemax/dataimporthandler
VelocityDeprecated in 8.4

SOLR-14792 - Getting issue details... STATUS

Community package releasedhttps://github.com/erikhatcher/solritas
CDCRDeprecated in 8.6

SOLR-14616 - Getting issue details... STATUS

No efforts for community package underway yetTBD
Storing indexes and backups in HDFSDeprecated in 8.6

SOLR-13989 - Getting issue details... STATUS

Community package efforts underwayTBDSome volunteers are already working on this.
Autoscaling framework

Removed in: SOLR-14656 - Getting issue details... STATUS

Autoscaling framework has been replaced with a new plugin for replica placement only. Some aspects of the original framework are not replaced at all at this time (but may be in the future). n/a
Tika / SolrCell

Under discussion: 

SOLR-13973 - Getting issue details... STATUS

No efforts for community package underway yetTBD
Solr Admin UINo change in current status
A new admin UI (which can replace current UI, if needed) is being actively worked onhttps://github.com/yasa-org/yasa
Runtime lib plugin loading from blob store

SOLR-14654 - Getting issue details... STATUS

NANAReplaced by Package Management System
StatelessScript UpdateProcessor

Did not deprecate

Moved to new "scripting" contrib:

SOLR-14067 - Getting issue details... STATUS

N/A; staying as a 1st party contribTBDThis should be extremely easy to package
Metrics HistoryDeprecated in 8.9

Removed in  SOLR-15416 - Getting issue details... STATUS

No efforts for community package are underwayn/a
Check out solr.cool for more plugins and other Solr integrations.







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1 Comment

  1. We may want to make this page more generic:

    • No 8x & 9x oriented columns; instead "deprecated in" and "removed in"
    • The "package" location might imply it fits in the package framework yet there might not be work to have done so but it's available externally nevertheless.  Granted this is hypothetical as I write this.

    (BTW this comment and comments in general can and should be deleted eventually)