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Upgrade CHANGES.txt for http2 changes

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Cao Manh Dat 2019-01-17 16:31:09 +00:00
parent 70dd3ee06a
commit 8e7a135496
1 changed files with 27 additions and 1 deletions
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solr/CHANGES.txt
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@ -47,6 +47,19 @@ Jetty 9.4.14.v20181114
Upgrade Notes
----------------------
* Solr nodes can now listen and serve HTTP/2 requests. Most of internal requests (sent by UpdateShardHandler, HttpShardHandler)
Http2SolrClient is used. Since by default, internal requests are sent by using HTTP/2,
Solr 8.0 nodes can't talk to old nodes (7.x). However we can follow these steps to do rolling updates:
- Do rolling updates as normally, but the Solr 8.0 nodes must start with -Dsolr.http1=true as startup parameter.
By using this parameter internal requests are sent by using HTTP/1.1
- When all nodes are upgraded to 8.0, restart them, this time -Dsolr.http1 parameter should be removed.
* ALPN is not supported in Java 8 or lower version therefore when a node started in Java 8 or a lower version with SSL enabled,
it will send and can only be able to handle HTTP/1.1 requests. In case of using SSL Java 9 or latter versions are recommended.
* Custom AuthenticationPlugin must provide its own setup for Http2SolrClient through
implementing HttpClientBuilderPlugin.setup, if not internal requests can't be authenticated.
* LUCENE-7996: The 'func' query parser now returns scores that are equal to 0
when a negative value is produced. This change is due to the fact that
Lucene now requires scores to be positive. (Adrien Grand)
@ -72,6 +85,17 @@ Upgrade Notes
"date.formats" configuration. To ensure date strings are properly parsed, use ParseDateFieldUpdateProcessorFactory
(an URP) commonly registered with the name "parse-date" in "schemaless mode". (David Smiley, Bar Rotstein)
* SOLR-12643: Since Http2SolrClient does not support exposing connections related metrics. These metrics are no longer
available 'QUERY.httpShardHandler.{availableConnections, leasedConnections, maxConnections, pendingConnections}',
'UPDATE.updateShardHandler.{availableConnections, leasedConnections, maxConnections, pendingConnections}'
* SOLR-12605: UpdateShardHandler's updateOnlyClient is now a Http2SolrClient (previous HttpSolrClient). This new
client does not support 'maxConnections','maxConnectionsPerHost' parameters.
* SOLR-12640: HttpShardHandlerFactory's defaultClient is now a Http2SolrClient (previous HttpSolrClient). This new
client does not support 'maxConnections','maxConnectionsPerHost' parameters. LBHttpSolrClient.Req and LBHttpSolrClient.Rsp
are marked as deprecated, uses LBSolrClient.Req and LBSolrClient.Rsp instead.
* SOLR-12754: The UnifiedHighlighter hl.weightMatches now defaults to true. If there are unforseen highlight problems,
this may be the culprit.
@ -116,6 +140,8 @@ New Features
* SOLR-12730: Implement staggered SPLITSHARD requests in IndexSizeTrigger. (ab)
* SOLR-12639: Umbrella JIRA for adding support HTTP/2 (Cao Manh Dat)
Bug Fixes
----------------------