# StringIndexOutOfBounds Error from vectorhighlight in our ES(v1.7.1) server debug message

**URL:** <https://discuss.elastic.co/t/stringindexoutofbounds-error-from-vectorhighlight-in-our-es-v1-7-1-server-debug-message/56695>\
**Category:** Elasticsearch\
**Created:** [July 29, 2016, 6:19am UTC](https://discuss.elastic.co/t/stringindexoutofbounds-error-from-vectorhighlight-in-our-es-v1-7-1-server-debug-message/56695 "2016-07-29T06:19:04Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Cheng](https://avatars.discourse-cdn.com/v4/letter/c/ecccb3/32.png) [@Cheng](https://discuss.elastic.co/u/Cheng)\
**Post date:** [July 29, 2016, 6:19am UTC](https://discuss.elastic.co/t/stringindexoutofbounds-error-from-vectorhighlight-in-our-es-v1-7-1-server-debug-message/56695/1 "2016-07-29T06:19:04Z")

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Hi everyone,

I noticed there were lots of StringIndexOutOfBoundsException from vectorhighlight in our elastic search server log like below. Do you have any idea? thanks.

ES version

```
"version" : {
    "number" : "1.7.1",
    "build_hash" : "b88f43fc40b0bcd7f173a1f9ee2e97816de80b19",
    "build_timestamp" : "2015-07-29T09:54:16Z",
    "build_snapshot" : false,
    "lucene_version" : "4.10.4"
  }

```

Error

```
org.elasticsearch.search.fetch.FetchPhaseExecutionException: [myindex][1]: query[filtered(function score (filtered((((+name:cl +name:s)^2.0) | (+autocomp:cl +autocomp:s)))->...,from[0],size[20]: Fetch Failed [Failed to highlight field [content]]
                at org.elasticsearch.search.highlight.FastVectorHighlighter.highlight(FastVectorHighlighter.java:177)
                at org.elasticsearch.search.highlight.HighlightPhase.hitExecute(HighlightPhase.java:133)
                at org.elasticsearch.search.fetch.FetchPhase.execute(FetchPhase.java:194)
                at org.elasticsearch.search.SearchService.executeFetchPhase(SearchService.java:516)
                at org.elasticsearch.search.action.SearchServiceTransportAction$17.call(SearchServiceTransportAction.java:452)
                at org.elasticsearch.search.action.SearchServiceTransportAction$17.call(SearchServiceTransportAction.java:449)
                at org.elasticsearch.search.action.SearchServiceTransportAction$23.run(SearchServiceTransportAction.java:559)
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
                at java.lang.Thread.run(Thread.java:745)
        Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 61
                at java.lang.String.substring(String.java:1907)
                at org.apache.lucene.search.vectorhighlight.BaseFragmentsBuilder.makeFragment(BaseFragmentsBuilder.java:178)
                at org.elasticsearch.search.highlight.vectorhighlight.SimpleFragmentsBuilder.makeFragment(SimpleFragmentsBuilder.java:43)
                at org.apache.lucene.search.vectorhighlight.BaseFragmentsBuilder.createFragments(BaseFragmentsBuilder.java:144)
                at org.apache.lucene.search.vectorhighlight.FastVectorHighlighter.getBestFragments(FastVectorHighlighter.java:187)
                at org.elasticsearch.search.highlight.FastVectorHighlighter.highlight(FastVectorHighlighter.java:154)
                ... 9 more

```

Thanks,  
Cheng

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<div class="post-metadata">

**Author:** ![ywelsch](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ywelsch/32/7751_2.png) [@ywelsch](https://discuss.elastic.co/u/ywelsch)\
**Post date:** [July 29, 2016, 12:50pm UTC](https://discuss.elastic.co/t/stringindexoutofbounds-error-from-vectorhighlight-in-our-es-v1-7-1-server-debug-message/56695/2 "2016-07-29T12:50:14Z")

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This looks like a bug in Lucene, the full-text search library that ES uses. It might have been fixed in newer versions though. I suggest upgrading to ES 2.3.4 if possible.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 10:31pm UTC](https://discuss.elastic.co/t/stringindexoutofbounds-error-from-vectorhighlight-in-our-es-v1-7-1-server-debug-message/56695/3 "2017-07-05T22:31:43Z")

</div>