Re: [CLucene-dev] Bug in SegmentMerger and IndexWriter

[Ben v. K. <bva...@gm...>]

Hi Jiri,

What branch are you using? I just tried compiling and running that test and
it ran without any issues

ben

2012/4/12 Šplíchal Jiří <spl...@to...>

> Hello,
>
> please find attached TestIndexWriter.cpp extended with one more test that
> shows two different bugs:
> 1) If you leave the test as it is, than it crashes on line 680 when
> optimizing an index that
> was previously empty (all documents were deleted) and then some documents
> has been added.
> We were able to fix this bug, the problem is in SegmentMerger.cpp 769 where
>          reader->norms(fi->name, normBuffer.values);
> is called with normBuffer.values == NULL.
> To prevent this it is sufficient to initialize the normBuffer at the
> beginning of the method
> with length 1.
>
> 2) If you uncomment writer->optimize(); on line 660 in the test, than the
> following call to
> writer->close(); crashes. We have not found any solution for this issue
> where we could be
> sure about all consequences. But the problematic method in this case is
> bool IndexWriter::flushDocStores()
> which intializes a local variable files by calling:
>        const std::vector<std::string>& files = docWriter->files();
> but the following calls have as side effect modification of this vector in
> such way
> that the application crashes.
>
> Best Regards,
> Jiri
>
>
>
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