Remove lucene entirely, simply comment out ES or OS import for usage

Author: kgoeltner

README.md

@@ -104,7 +104,7 @@ Check-out the [Conductor OSS docs](https://github.com/conductor-oss/conductor/tr
 # Database Specifications
 * The default persistence used is Redis
 * The indexing backend is [Elasticsearch](https://www.elastic.co/) (7.x)
-* To use [Opensearch](https://opensearch.org/) (2.x), make sure to change the lucene version in [dependencies.gradle](https://github.com/conductor-oss/conductor/blob/main/dependencies.gradle)
+* To use [Opensearch](https://opensearch.org/) (2.x), comment out Elasticsearch import so lucene dependencies don't conflict [server/build.gradle](https://github.com/conductor-oss/conductor/blob/main/server/build.gradle#L44-L46)
 
 
 ### Configuration for various database backends

dependencies.gradle

@@ -68,6 +68,5 @@ ext {
     revNats = '2.16.14'
     revStan = '2.2.3'
     revFlyway = '10.15.2'
-    revApacheLucene = '8.11.1'  // Change this to 9.12.0 for Opensearch support
     revConductorClient = '4.0.10'
 }

es7-persistence/build.gradle

@@ -27,8 +27,6 @@ dependencies {
     implementation "com.fasterxml.jackson.core:jackson-databind"
     implementation "com.fasterxml.jackson.core:jackson-core"
 
-    implementation "org.apache.lucene:lucene-core:${revApacheLucene}"
-
     implementation "org.elasticsearch.client:elasticsearch-rest-client:${revElasticSearch7}"
     implementation "org.elasticsearch.client:elasticsearch-rest-high-level-client:${revElasticSearch7}"
 

server-lite/build.gradle

@@ -60,7 +60,6 @@ dependencies {
     implementation 'org.apache.logging.log4j:log4j-web'
     implementation "redis.clients:jedis:${revJedis}"
     implementation "org.postgresql:postgresql:${revPostgres}"
-    implementation "org.apache.lucene:lucene-core:${revApacheLucene}"
 
     implementation 'org.springframework.boot:spring-boot-starter-actuator'
     implementation ("io.orkes.queues:orkes-conductor-queues:${revOrkesQueues}") {

server/build.gradle

@@ -42,8 +42,7 @@ dependencies {
 
     //Indexing (note: Elasticsearch 6 is deprecated)
     implementation project(':conductor-es7-persistence')
-    // To use Opensearch, uncomment below & change the lucene version in
-    // dependencies.gradle to 9.12.0; update and rebuild conductor
+    // To use Opensearch, comment out above Elasticsearch, uncomment below Opensearch, and rebuild conductor
     // implementation project(':conductor-os-persistence')
 
     implementation project(':conductor-redis-lock')
@@ -70,7 +69,6 @@ dependencies {
     implementation 'org.apache.logging.log4j:log4j-web'
     implementation "redis.clients:jedis:${revJedis}"
     implementation "org.postgresql:postgresql:${revPostgres}"
-    implementation "org.apache.lucene:lucene-core:${revApacheLucene}"
 
     implementation 'org.springframework.boot:spring-boot-starter-actuator'
     implementation ("io.orkes.queues:orkes-conductor-queues:${revOrkesQueues}") {