* SOLR-14588: Implement Circuit Breakers
This commit consists of two parts: initial circuit breakers infrastructure and real JVM memory based
circuit breaker which monitors incoming search requests and rejects them with SERVICE_TOO_BUSY error
if the defined threshold is breached, thus giving headroom to existing indexing and search requests
to complete.
in the case of an exception it's possible that some OneMerge instances
will be closed multiple times. This commit ensures that mergeFinished is
really just called once instead of multiple times.
Similar how scorers can update their iterators to skip non-competitive
documents, collectors and comparators should also provide and update
iterators that allow them to skip non-competive documents.
SOLR-14584: Correct SOLR_SSL_KEY_STORE and SOLR_SSL_TRUST_STORE example comments in solr.in.sh and solr.in.cmd files
(Aren Cambre via Christine Poerschke)
Closes#1597
SOLR-12823: remove clusterstate.json in Lucene/Solr 9.0 - fix TestZKPropertiesWriter
TestZKPropertiesWriter relied on removed legacy features of the SolrCloud cluster to work.
Start a MiniSolrCloudCluster (implies config set and other test resources config) and have the test use the core of a created collection.
DWPT.DocState had some history value but today in a little bit more
cleaned up DWPT and IndexingChain there is little to no value in having
this class. It also requires explicit cleanup which is not not necessary
anymore.
This change adds infrastructure to allow straight forward waiting
on one or more merges or an entire merge specification. This is
a basis for LUCENE-8962.
* Add an example explaining how to use
* fix up JavaDoc formatting
* add missing SearchComponents that ship with Solr, and point to external site with components.
* fix path
* simplify page layout by consolidating to lists
* add missing components that are documented elsewhere in refguide
* try to get pathing to pass precommit
* remove mention of solr.cool, in favour of a seperate PR that handles it differently
Several classes within the IndexWriter indexing chain haven't been touched for
several years. Most of these classes expose their internals through public
members and are difficult to construct in tests since they depend on many other
classes. This change tries to clean up TermsHashPerField and adds a dedicated
standalone test for it to make it more accessible for other developers since
it's simpler to understand. There are also attempts to make documentation better
as a result of this refactoring.
