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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-3449) QueryComponent.doFieldSortValues throw ArrayIndexOutOfBoundsException when has maxDoc=0 Segment
Date Sun, 22 Jul 2012 16:03:35 GMT

     [ https://issues.apache.org/jira/browse/SOLR-3449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uwe Schindler updated SOLR-3449:
--------------------------------

    Fix Version/s:     (was: 3.6.1)
                   3.6.2
    
> QueryComponent.doFieldSortValues throw ArrayIndexOutOfBoundsException when has maxDoc=0
Segment
> -----------------------------------------------------------------------------------------------
>
>                 Key: SOLR-3449
>                 URL: https://issues.apache.org/jira/browse/SOLR-3449
>             Project: Solr
>          Issue Type: Bug
>          Components: search
>    Affects Versions: 3.5, 3.6
>            Reporter: Linbin Chen
>             Fix For: 3.6.2
>
>         Attachments: SOLR-3449.patch
>
>
> have index
> {code}
> Segment name=_9, offest=[docBase=0, maxDoc=245] idx=0
> Segment name=_a, offest=[docBase=245, maxDoc=3] idx=1
> Segment name=_b, offest=[docBase=248, maxDoc=0] idx=2
> Segment name=_c, offest=[docBase=248, maxDoc=1] idx=3
> Segment name=_d, offest=[docBase=249, maxDoc=0] idx=4
> Segment name=_e, offest=[docBase=249, maxDoc=1] idx=5
> Segment name=_f, offest=[docBase=250, maxDoc=0] idx=6
> Segment name=_g, offest=[docBase=250, maxDoc=3] idx=7
> Segment name=_h, offest=[docBase=253, maxDoc=0] idx=8
> {code}
> maxDoc=0 's Segment maybe create by mergeIndexes。(can make sure maxDoc=0 's segment
not merge, but when couldn't control merge indexes)
> when use fsv=true get sort values, hit docId=249 throw ArrayIndexOutOfBoundsException
> {code}
> 2012-5-11 14:28:28 org.apache.solr.common.SolrException log
> ERROR: java.lang.ArrayIndexOutOfBoundsException: 0
>         at org.apache.lucene.search.FieldComparator$LongComparator.copy(FieldComparator.java:600)
>         at org.apache.solr.handler.component.QueryComponent.doFieldSortValues(QueryComponent.java:463)
>         at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:400)
> {code}
> reason:
> {code}
> //idx              0    1    2    3    4    5    6    7    8
> //int[] maxDocs={245,   3,   0,   1,   0,   1,   0,   3,   0};
> int[] offsets = {  0, 245, 248, 248, 249, 249, 250, 250, 253};
> org.apache.solr.search.SolrIndexReader.readerIndex(249, offsets) return idx=4 not 5。
> {code}
> correct idx=5。
> patch
> {code}
> Index: solr/core/src/java/org/apache/solr/search/SolrIndexReader.java
> ===================================================================
> --- solr/core/src/java/org/apache/solr/search/SolrIndexReader.java	(revision 1337028)
> +++ solr/core/src/java/org/apache/solr/search/SolrIndexReader.java	(working copy)
> @@ -138,6 +138,16 @@
>        }
>        else {
>          // exact match on the offset.
> +    	//skip equal offest
> +      	for(int i=mid+1; i<=high; i++) {
> +      		if(doc == offsets[i]) {
> +      			//skip offests[i] == doc
> +          		mid = i;
> +      		} else {
> +      			//stop skip offest
> +      			break;
> +      		}
> +      	}
>          return mid;
>        }
>      }
> {code}

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