[SOLR-7084] FreeTextSuggester Nullpointer when building dictionary

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.10.2
• Fix Version/s: 5.1, 6.0
• Component/s: Suggester
• Assignee: Jan Høydahl
• Reporter: Jan Høydahl
• Created: 06/Feb/15 12:43
• Updated: 09/May/16 18:50
• Resolved: 12/Feb/15 11:22

Description

Using FreeTextSuggester. When starting Solr or reloading core, all suggest requests will fail due to a Nullpointer. There is a HTTP 500 response code with the following body. Note that the error returned does not have a msg section but only a trace:

{
  "error":{
    "trace":"java.lang.NullPointerException\n\tat org.apache.lucene.search.suggest.analyzing.FreeTextSuggester.lookup(FreeTextSuggester.java:542)\n\tat org.apache.lucene.search.suggest.analyzing.FreeTextSuggester.lookup(FreeTextSuggester.java:440)\n\tat org.apache.lucene.search.suggest.analyzing.FreeTextSuggester.lookup(FreeTextSuggester.java:429)\n\tat org.apache.solr.spelling.suggest.SolrSuggester.getSuggestions(SolrSuggester.java:199)\n\tat 
...

Offending line:

      BytesReader bytesReader = fst.getBytesReader();

The fst is null at this time.