tsasaki609 opened a new pull request #150:
URL: https://github.com/apache/solr/pull/150


   https://issues.apache.org/jira/browse/SOLR-15411
   
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   # Description
   
   Enable failOnVersionConflicts even for atomic updates.
   
   # Solution
   
   Added a check for failOnVersionConflicts to prevent unintended exceptions 
from occurring.
   
   # Tests
   
   I have run the following client code to the techproducts example、
   ```
   ./gradlew clean dev
   ./solr/packaging/build/dev/bin/solr start -e techproducts -c -a 
"-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=18983"
   ```
   and add the hasUserAssertions field.
   
![image](https://user-images.githubusercontent.com/916115/119599326-bda67b00-be1f-11eb-86ba-57fc7df959f9.png)
   
   After the fix, the error message is no longer returned.
   
   ## Client Code
   ```
   import static java.lang.System.out;
   
   import java.util.ArrayList;
   import java.util.HashMap;
   import java.util.List;
   import org.apache.solr.client.solrj.impl.CloudSolrClient;
   import org.apache.solr.client.solrj.request.UpdateRequest;
   import org.apache.solr.client.solrj.response.UpdateResponse;
   import org.apache.solr.common.SolrInputDocument;
   
   public class Reproduce {
     public static void main(String[] args) throws Exception {
       CloudSolrClient solrClient = new 
CloudSolrClient.Builder(List.of("http://localhost:8983/solr";)).build();
       solrClient.setDefaultCollection("techproducts");
   
       List<String> idList = List.of("TWINX2048-3200PRO", "VS1GB400C3", 
"VDBDB1A16", "MA147LL/A", "F8V7067-APL-KIT");
   
       List<SolrInputDocument> batch = new ArrayList<>();
       for(int idx = 1; idx <= idList.size(); idx++) {
         SolrInputDocument doc = new SolrInputDocument();
         if (idx == 3) {
           doc.addField("id", idList.get(idx - 1) + "_invalid");
         } else {
           doc.addField("id", idList.get(idx - 1));
         }
   
         doc.addField("hasUserAssertions", new HashMap<String, Object>() {{ 
put("set", true); }});
         doc.addField("price_c____l_ns", null);
         // this makes sure update only succeeds when record with specified id 
exists
         doc.addField("_version_", 1);
   
         out.println("Added solr doc for record: " + doc.get("id"));
         batch.add(doc);
       }
   
       UpdateRequest updateRequest = new UpdateRequest();
       updateRequest.setAction(UpdateRequest.ACTION.COMMIT, false, false);
       updateRequest.setParam("failOnVersionConflicts", "false");
       updateRequest.add(batch); // List<SolrInputDocument> batch
       updateRequest.lastDocInBatch();
   
       try {
         UpdateResponse process = updateRequest.process(solrClient);
         out.println("xhk205 process = " + process.toString());
       } catch (Exception e) {
         out.println("Failed to update solr doc, error message: " + 
e.getMessage());
       }
     }
   }
   ```
   
   ## Before
   Output:
   ```
   Added solr doc for record: id=TWINX2048-3200PRO
   Added solr doc for record: id=VS1GB400C3
   Added solr doc for record: id=VDBDB1A16_invalid
   Added solr doc for record: id=MA147LL/A
   Added solr doc for record: id=F8V7067-APL-KIT
   Failed to update solr doc, error message: Error from server at 
http://localhost:8983/solr/techproducts_shard1_replica_n1: Document not found 
for update.  id=VDBDB1A16_invalid
   ```
   
   Query:
   
http://localhost:8983/solr/techproducts/select?fq=hasUserAssertions:*&q=*:*&fl=id
   ```
   {
     "responseHeader":{
       "zkConnected":true,
       "status":0,
       "QTime":18,
       "params":{
         "q":"*:*",
         "fl":"id",
         "fq":"hasUserAssertions:*"}},
     "response":{"numFound":2,"start":0,"numFoundExact":true,"docs":[
         {
           "id":"TWINX2048-3200PRO"},
         {
           "id":"VS1GB400C3"}]
     }}
   ```
   
   ## After
   Output:
   ```
   Added solr doc for record: id=TWINX2048-3200PRO
   Added solr doc for record: id=VS1GB400C3
   Added solr doc for record: id=VDBDB1A16_invalid
   Added solr doc for record: id=MA147LL/A
   Added solr doc for record: id=F8V7067-APL-KIT
   xhk205 process = {responseHeader={status=0,QTime=260,rf=1}}
   ```
   
   Query:
   
http://localhost:8983/solr/techproducts/select?fq=hasUserAssertions:*&q=*:*&fl=id
   ```
     {
       "responseHeader":{
         "zkConnected":true,
         "status":0,
         "QTime":2,
         "params":{
           "q":"*:*",
           "fl":"id",
           "fq":"hasUserAssertions:*"}},
       "response":{"numFound":4,"start":0,"numFoundExact":true,"docs":[
           {
             "id":"TWINX2048-3200PRO"},
           {
             "id":"VS1GB400C3"},
           {
             "id":"MA147LL/A"},
           {
             "id":"F8V7067-APL-KIT"}]
       }}
   ```
   
   # Checklist
   
   Please review the following and check all that apply:
   
   - [x] I have reviewed the guidelines for [How to 
Contribute](https://wiki.apache.org/solr/HowToContribute) and my code conforms 
to the standards described there to the best of my ability.
   - [x] I have created a Jira issue and added the issue ID to my pull request 
title.
   - [x] I have given Solr maintainers 
[access](https://help.github.com/en/articles/allowing-changes-to-a-pull-request-branch-created-from-a-fork)
 to contribute to my PR branch. (optional but recommended)
   - [x] I have developed this patch against the `main` branch.
   - [x] I have run `./gradlew check`.
   - [ ] I have added tests for my changes.
   - [ ] I have added documentation for the [Reference 
Guide](https://github.com/apache/solr/tree/main/solr/solr-ref-guide)
   


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