solr-7.4.0.zip

Apache Solr Release Notes Introduction ------------ Apache Solr is an open source enterprise search server based on the Apache Lucene Java search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication, and a web administration interface. See http://lucene.apache.org/solr for more information. Getting Started --------------- You need a Java 1.8 VM or later installed. In this release, there is an example Solr server including a bundled servlet container in the directory named "example". See the Solr tutorial at https://lucene.apache.org/solr/guide/solr-tutorial.html ================== 7.4.0 ================== Consult the LUCENE_CHANGES.txt file for additional, low level, changes in this release. Versions of Major Components --------------------- Apache Tika 1.17 Carrot2 3.16.0 Velocity 1.7 and Velocity Tools 2.0 Apache UIMA 2.3.1 Apache ZooKeeper 3.4.11 Jetty 9.4.10.v20180503 Upgrade Notes ---------------------- * SOLR-7887: Solr now uses Log4J 2.11 . The log4j configuration is now in log4j2.xml rather than log4j.properties files. This is a server side change only and clients using SolrJ won't need any changes. Clients can still use any logging implementation which is compatible with SLF4J. We now let log4j2 handle rotation of solr logs at startup, and bin/solr start scripts will no longer attempt this nor move existing console or GC logs into logs/archived either (SOLR-12144). * SOLR-11673: Slave doesn't commit empty index when completely new index is detected on master during replication. To return the previous behavior pass false to skipCommitOnMasterVersionZero in slave section of replication handler configuration, or pass it to the fetchindex command. * SOLR-11453: Configuring slowQueryThresholdMillis now logs slow requests to a separate file - solr_slow_requests.log. Previously they would get logged in the solr.log file. New Features ---------------------- * SOLR-12396: Upgrade Carrot2 to 3.16.0, HPPC to 0.8.1, morfologik to 2.1.5. (Dawid Weiss) * SOLR-11200: A new CMS config option 'ioThrottle' to manually enable/disable ConcurrentMergeSchedule.doAutoIOThrottle. (Amrit Sarkar, Nawab Zada Asad iqbal via Dawid Weiss) * SOLR-11670: Implement a periodic house-keeping task. This uses a scheduled autoscaling trigger and currently performs cleanup of old inactive shards. (ab, shalin) * SOLR-12015: Add support "add-distinct" in AtomicURP so that we can use the 'add-distict' as a request parameter e.g: atomic.<multival-field-name>=add-distict (Amrit Sarkar via noble) * SOLR-7887: Upgrade Solr to use Log4J 2.11 (Tim Potter, Keith Laban, Shawn Heisey, Ralph Goers, Erick Erickson, Varun Thacker) * SOLR-12139: The "eq" (equals) function query now works with string fields, string literals, and perhaps anything. (Andrey Kudryavtsev, David Smiley) * SOLR-10783: Add support for Hadoop Credential Provider as SSL/TLS store password source. (Mano Kovacs via Mark Miller) * SOLR-12036: Factor out DefaultStreamFactory solrj class. (Christine Poerschke) * SOLR-12151: Add abstract MultiSolrCloudTestCase class. (Christine Poerschke) * SOLR-12181: Add index size autoscaling trigger, based on document count or size in bytes. (ab) * SOLR-11982: Add possibility to define replica order with the shards.preference parameter to e.g. prefer PULL replicas for distributed queries. (Ere Maijala, Tomás Fernández Löbbe) * SOLR-11336: DocBasedVersionConstraintsProcessorFactory is more extensible and now supports a list of versioned fields. (versionField config may now be a comma-delimited list). (Michael Braun via David Smiley) * SOLR-11913: SolrJ SolrParams now implements Iterable<Map.Entry<String, String[]>> and also has a stream() method using it for convenience. (David Smiley, Tapan Vaishnav) * SOLR-11924: Added the ability to listen to changes in the set of active collections in a cloud in the ZkStateReader, through the CloudCollectionsListener. (Houston Putman, Dennis Gove) * SOLR-8998: introducing uniqueBlock(_root_) aggregation as faster alternative to unique(_root_) for counting child value facets in parents via json.facet on block index (Dr Oleg Savrasov, Mikhail Khludnev) * SOLR-11278: Add IgnoreLargeDocumentProcessFactory (Cao Manh Dat, David Smiley) * SOLR-11277: Add auto hard-commit settings based on tlog size (Rupa Shankar, Anshum Gupta) * SOLR-9480: A new 'relatedness()' aggregate function for JSON Faceting to enable building Semantic Knowledge Graphs. (Trey Grainger, hossman) * SOLR-11453: Configuring slowQueryThresholdMillis logs slow requests to a separate file - solr_slow_requests.log. (Shawn Heisey, Remko Popma, Varun Thacker) * SOLR-12401: Add getValue() and setValue() Stream Evaluators (Joel Bernstein, janhoy) * SOLR-12378: Support missing versionField on indexed docs in DocBasedVersionConstraintsURP. (Oliver Bates, Michael Braun via Mark Miller) * SOLR-12388: Enable a strict ZooKeeper-connected search request mode, in which search requests will fail when the coordinating node can't communicate with ZooKeeper, by setting the "shards.tolerant" param to "requireZkConnected". (Steve Rowe) * SOLR-9685: #Tagging queries in JSON Query DSL, equivalent to LocalParams based query/filter tagging. Multiple tags are comma separated. LocalParams Example : {!tag=colorfilt}color:blue Equivalent JSON Example : { "#colorfilt" : "color:blue" } (Dmitry Tikhonov, Mikhail Khludnev, yonik) * SOLR-12328: JSON Facet API: Domain change with graph query. (Daniel Meehl, Kevin Watters, yonik) * SOLR-11779, SOLR-12438: Basic long-term collection of aggregated metrics. Historical data is maintained as multi-resolution time series using round-robin databases in the '.system' collection. New /admin/metrics/history API allows retrieval of this data in numeric or graph formats. (ab) * SOLR-12387: cluster-wide defaults for numShards, nrtReplicas, tlogReplicas, pullReplicas (noble) * SOLR-12389: support deeply nested json objects in clusterprops.json (noble) * SOLR-12376: Added the TaggerRequestHandler (AKA SolrTextTagger) for tagging text. It's used as a component of NER/ERD systems including query-understanding. See the ref guide for more info. (David Smiley) * SOLR-12266: Add discrete Fourier transform Stream Evaluators (Joel Bernstein) * SOLR-12158: Allow the monteCarlo Stream Evaluator to support variables (Joel Bernstein) * SOLR-11734: Add ones and zeros Stream Evaluators (Joel Bernstein) * SOLR-12273: Create Stream Evaluators for distance measures (Joel Bernstein) * SOLR-12159: Add memset Stream Evaluator (Joel Bernstein) * SOLR-12221: Add valueAt Stream Evaluator (Joel Bernstein) * SOLR-12175: Add random field type and dynamic field to the default managed-schema (Joel Bernstein) Bug Fixes ---------------------- * SOLR-5351: Fixed More Like This Handler to use all fields provided in mlt.fl when used with content stream. The similarity is calculated between the content stream's value and all fields listed in mlt.fl. (Dawid Weiss) * SOLR-12103: Raise CryptoKeys.DEFAULT_KEYPAIR_LENGTH from 1024 to 2048. (Mark Miller) * SOLR-12107: Fixed a error in [child] transformer that could ocur if documentCache was not used (hossman) * SOLR-12108: Fixed the fallback behavior of [raw] and [xml] transformers when an incompatble 'wt' was specified, the field value was lost if documentCache was not used. (hossman) * SOLR-11551: Standardize CoreAdmin API success/failure status codes (Jason Gerlowski, Steve Rowe) * SOLR-12035: ExtendedDismaxQParser fails to include charfilters in nostopanalyzer (Tim Allison via Tomás Fernández Löbbe) * SOLR-10734: AtomicUpdateRequestProcessor can cause wrong/old values to be set under concurrent updates for the same docu