acsbendi opened a new pull request, #1054:
URL: https://github.com/apache/solr/pull/1054
# Description
This change fixes the following exception:
```
2022-10-04 12:21:26.033 ERROR (qtp503938393-25) [...]
o.a.s.c.s.i.s.ExceptionStream java.lang.IndexOutOfBoundsException: Index 0 out
of bounds for length 0 => java.lang.IndexOutOfBoundsException: Index 0 out of
bounds for length 0
at java.base/jdk.internal.util.Preconditions.outOfBounds(Unknown
Source)
java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
at jdk.internal.util.Preconditions.outOfBounds(Unknown Source) ~[?:?]
at jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Unknown
Source) ~[?:?]
at jdk.internal.util.Preconditions.checkIndex(Unknown Source) ~[?:?]
at java.util.Objects.checkIndex(Unknown Source) ~[?:?]
at java.util.ArrayList.get(Unknown Source) ~[?:?]
at
[org.apache.solr.client.solrj.io](http://org.apache.solr.client.solrj.io/).eval.RecursiveNumericEvaluator.normalizeInputType(RecursiveNumericEvaluator.java:55)
~[?:?]
at
[org.apache.solr.client.solrj.io](http://org.apache.solr.client.solrj.io/).eval.RecursiveEvaluator.recursivelyEvaluate(RecursiveEvaluator.java:214)
~[?:?]
at
[org.apache.solr.client.solrj.io](http://org.apache.solr.client.solrj.io/).eval.RecursiveEvaluator.evaluate(RecursiveEvaluator.java:202)
~[?:?]
at
[org.apache.solr.client.solrj.io](http://org.apache.solr.client.solrj.io/).stream.LetStream.open(LetStream.java:195)
~[?:?]
at
[org.apache.solr.client.solrj.io](http://org.apache.solr.client.solrj.io/).stream.ExceptionStream.open(ExceptionStream.java:49)
~[?:?]
at
org.apache.solr.handler.StreamHandler$TimerStream.open(StreamHandler.java:486)
~[?:?]
at
[org.apache.solr.client.solrj.io](http://org.apache.solr.client.solrj.io/).stream.TupleStream.writeMap(TupleStream.java:77)
~[?:?]
at
org.apache.solr.common.util.JsonTextWriter.writeMap(JsonTextWriter.java:168)
~[?:?]
at
org.apache.solr.common.util.TextWriter.writeMap(TextWriter.java:241) ~[?:?]
at
org.apache.solr.common.util.TextWriter.writeVal(TextWriter.java:85) ~[?:?]
at
org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:205)
~[?:?]
at
org.apache.solr.common.util.TextWriter.writeVal(TextWriter.java:45) ~[?:?]
at
org.apache.solr.common.util.JsonTextWriter.writeNamedListAsMapWithDups(JsonTextWriter.java:387)
~[?:?]
at
org.apache.solr.common.util.JsonTextWriter.writeNamedList(JsonTextWriter.java:295)
~[?:?]
at
org.apache.solr.response.JSONWriter.writeResponse(JSONWriter.java:77) ~[?:?]
at
org.apache.solr.response.JSONResponseWriter.write(JSONResponseWriter.java:63)
~[?:?]
at
org.apache.solr.response.QueryResponseWriterUtil.writeQueryResponse(QueryResponseWriterUtil.java:71)
~[?:?]
at
org.apache.solr.servlet.HttpSolrCall.writeResponse(HttpSolrCall.java:999) ~[?:?]
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:631)
~[?:?]
at
org.apache.solr.servlet.SolrDispatchFilter.dispatch(SolrDispatchFilter.java:239)
~[?:?]
at
org.apache.solr.servlet.SolrDispatchFilter.lambda$doFilter$0(SolrDispatchFilter.java:207)
~[?:?]
at
org.apache.solr.servlet.ServletUtils.traceHttpRequestExecution2(ServletUtils.java:257)
~[?:?]
at
org.apache.solr.servlet.ServletUtils.rateLimitRequest(ServletUtils.java:227)
~[?:?]
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:202)
~[?:?]
```
# Solution
I check if the list if empty before accessing its first item.
# Tests
# Checklist
Please review the following and check all that apply:
- [ ] 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.
- [ ] I have created a Jira issue and added the issue ID to my pull request
title.
- [ ] 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)
- [ ] I have developed this patch against the `main` branch.
- [ ] 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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