[SOLR-5521] MoreLikeThis component fails when item id is negative (begins with hyphen)

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 4.2.1
• Component/s: MoreLikeThis
• Assignee: Unassigned
• Reporter: Bill Mitchell
• Created: 02/Dec/13 21:17
• Updated: 06/Dec/13 22:47

Description

When the compared document's unique id is negative, the MoreLikeThis component fails to generate a valid query to pass to each shard, as the generated query does not encapsulate the item's negative id with quotes. In our case, we are adding documents with a negative id as temporary beans, used just for the MLT query, which will be deleted later.

You can see this with a rather simple MLT query:
http://lga-sppsolrprod01.pulse.prod/solr/rawContents/select?mlt=true&q=itemId:-1578997856&mlt.fl=text&mlt.count=100

where the returned response shows:
<response><lst name="responseHeader"><int name="status">400</int><int name="QTime">3</int><lst name="params"><str name="mlt.count">100</str><str name="mlt.fl">text</str><str name="q">itemId:1578997856</str><str name="mlt">true</str></lst></lst><lst name="error"><str name="msg">org.apache.solr.search.SyntaxError: Cannot parse 'itemId:-1578997856': Encountered " "" "- "" at line 1, column 7.
Was expecting one of:
<BAREOPER> ...
"(" ...
"*" ...
<QUOTED> ...
<TERM> ...
<PREFIXTERM> ...
<WILDTERM> ...
<REGEXPTERM> ...
"[" ...
"{" ...
<LPARAMS> ...
<NUMBER> ...
</str><int name="code">400</int></lst></response>

Issue Links

• duplicates: SOLR-5205 MoreLikeThis doesn't escape shard queries