Michael McCandless created LUCENE-4948:
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Summary: Stink bug in PostingsHighlighter
Key: LUCENE-4948
URL: https://issues.apache.org/jira/browse/LUCENE-4948
Project: Lucene - Core
Issue Type: Bug
Components: modules/highlighter
Reporter: Michael McCandless
Fix For: 5.0, 4.4
This test fail reproduces on IBM J9:
{noformat}
NOTE: reproduce with: ant test -Dtestcase=TestPostingsHighlighter
-Dtests.method=testCambridgeMA -Dtests.seed=2A9A93DAC39E0938
-Dtests.multiplier=3 -Dtests.slow=true -Dtests.locale=es_HN
-Dtests.timezone=America/Yellowknife -Dtests.file.encoding=UTF-8
{noformat}
{noformat}
Stack Trace:
java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 37
at
__randomizedtesting.SeedInfo.seed([2A9A93DAC39E0938:AB8FF071AD305139]:0)
at
org.apache.lucene.search.postingshighlight.Passage.addMatch(Passage.java:53)
at
org.apache.lucene.search.postingshighlight.PostingsHighlighter.highlightDoc(PostingsHighlighter.java:547)
at
org.apache.lucene.search.postingshighlight.PostingsHighlighter.highlightField(PostingsHighlighter.java:425)
at
org.apache.lucene.search.postingshighlight.PostingsHighlighter.highlightFields(PostingsHighlighter.java:364)
at
org.apache.lucene.search.postingshighlight.PostingsHighlighter.highlightFields(PostingsHighlighter.java:268)
at
org.apache.lucene.search.postingshighlight.PostingsHighlighter.highlight(PostingsHighlighter.java:198)
at
org.apache.lucene.search.postingshighlight.TestPostingsHighlighter.testCambridgeMA(TestPostingsHighlighter.java:373)
{noformat}
I think it's because J9 grows arrays in a different progression than other JVMs
... we should fix PostingsHighlighter to forcefully grow the arrays to the same
length instead of this:
{noformat}
if (numMatches == matchStarts.length) {
matchStarts = ArrayUtil.grow(matchStarts, numMatches+1);
matchEnds = ArrayUtil.grow(matchEnds, numMatches+1);
BytesRef newMatchTerms[] = new BytesRef[ArrayUtil.oversize(numMatches+1,
RamUsageEstimator.NUM_BYTES_OBJECT_REF)];
System.arraycopy(matchTerms, 0, newMatchTerms, 0, numMatches);
matchTerms = newMatchTerms;
}
{noformat}
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