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From Ziming Dong <dzm1016397...@gmail.com>
Subject Re: lucene index program won't start after power failure
Date Thu, 22 Sep 2016 11:44:57 GMT
I used checkIndex to recover second index though I lost many docs in index,
but first index can't be read by checkIndex, error is

java -cp lucene-core-6.1.0.jar -ea:org.apache.lucene...
> org.apache.lucene.index.CheckIndex /Volumes/HPT8_56T/infomall-index/index0
> Opening index @ /Volumes/HPT8_56T/infomall-index/index0
> ERROR: could not read any segments file in directory
> org.apache.lucene.index.IndexFormatTooOldException: Format version is not
> supported (resource
> BufferedChecksumIndexInput(MMapIndexInput(path="/Volumes/HPT8_56T/infomall-index/index0/segments_5t3"))):
> 0 (needs to be between 1071082519 and 1071082519). This version of Lucene
> only supports indexes created with release 5.0 and later.
>         at
> org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:295)
>         at
> org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:284)
>         at
> org.apache.lucene.index.CheckIndex.checkIndex(CheckIndex.java:507)
>         at org.apache.lucene.index.CheckIndex.doCheck(CheckIndex.java:2595)
>         at org.apache.lucene.index.CheckIndex.doMain(CheckIndex.java:2497)
>         at org.apache.lucene.index.CheckIndex.main(CheckIndex.java:2423)


 I use NFS, but I set mount option as  mount -t nfs -o tcp,sync,retrans=10
The index program has run 1 month without any problem before power failure.

On Thu, Sep 22, 2016 at 6:06 PM, Michael McCandless <
lucene@mikemccandless.com> wrote:

> Hmm I'm no longer so sure this is an IW bug: on commit we fsync the
> pending_segments_N and then do an atomic rename to segments_N.
>
> Can you describe your IO system?  Is it possible it does not implement
> fsync or atomic renames correctly?
>
> Also, your 2nd exception indices the segments_N file was intact but
> the .cfs file was corrupt, which is also hard to explain unless fsync
> isn't working on your IO system.
>
> Mike McCandless
>
> http://blog.mikemccandless.com
>
> On Thu, Sep 22, 2016 at 5:10 AM, Michael McCandless
> <lucene@mikemccandless.com> wrote:
> > Sorry for the slow reply here.  Curious that both of these exceptions
> > are from IW.init.  I think this may be a real bug, caused by this:
> > https://github.com/apache/lucene-solr/commit/
> 981bfba841144d08df1d1a183d39fcd6f195ad56
> >
> > I'll see if I can make a standalone test case showing this.
> >
> > If you open those indices with an IndexReader instead, does it succeed?
> >
> > If you run CheckIndex, what does it report?
> >
> > Mike McCandless
> >
> > http://blog.mikemccandless.com
> >
> > On Wed, Sep 14, 2016 at 1:22 AM, Ziming Dong <dzm1016397507@gmail.com>
> wrote:
> >> I have 6 machine and 6 index directories, each machine builds index into
> >> one index directory. After power failure last night, two of those
> machine
> >> can't start index program.
> >>
> >> one error is
> >>
> >>> INFO: 2016-09-14 12:31:38 [main]
> >>> sewm.bdbox.search.InfomallIndexer$Builder:ignoreCollectionsFile(227):
> >>> Loaded 2146 ignored collections from
> >>> /mnt/HPT8_56T/infomall-index/index0/ignored_collections.txt
> >>> ERROR: 2016-09-14 12:31:39 [main] sewm.bdbox.util.LogUtil:error(71):
> >>> org.apache.lucene.index.IndexFormatTooOldException: Format version is
> not
> >>> supported (resource
> >>> BufferedChecksumIndexInput(MMapIndexInput(path="/mnt/
> HPT8_56T/infomall-index/index0/segments_5t3"))):
> >>> 0 (needs to be between 1071082519 and 1071082519). This version of
> Lucene
> >>> only supports indexes created with release 5.0 and later.
> >>>         at
> >>> org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:295)
> >>>         at
> >>> org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:284)
> >>>         at org.apache.lucene.index.IndexWriter.<init>(
> IndexWriter.java:910)
> >>>         at
> >>> sewm.bdbox.search.InfomallIndexer.<init>(InfomallIndexer.java:60)
> >>>         at
> >>> sewm.bdbox.search.ThreadedInfomallIndexer.<init>
> (ThreadedInfomallIndexer.java:28)
> >>>         at
> >>> sewm.bdbox.search.ThreadedInfomallIndexer.<init>
> (ThreadedInfomallIndexer.java:21)
> >>>         at
> >>> sewm.bdbox.search.ThreadedInfomallIndexer$Builder.build(
> ThreadedInfomallIndexer.java:72)
> >>>         at
> >>> sewm.bdbox.search.ThreadedInfomallIndexer.main(
> ThreadedInfomallIndexer.java:129)
> >>
> >>
> >> another is
> >>
> >> INFO: 2016-09-14 01:11:06 [main]
> >>> sewm.bdbox.search.InfomallIndexer$Builder:ignoreCollectionsFile(227):
> >>> Loaded 8575 ignored collections from
> >>> /mnt/HPT8/infomall-index/index5/ignored_collections.txt
> >>> ERROR: 2016-09-14 01:11:09 [main] sewm.bdbox.util.LogUtil:error(71):
> >>> org.apache.lucene.index.CorruptIndexException: codec footer mismatch
> (file
> >>> truncated?): actual footer=0 vs expected footer=-1071082520
> >>> (resource=MMapIndexInput(path="/mnt/HPT8/infomall-index/
> index5/_1kqn.cfs"))
> >>>         at
> >>> org.apache.lucene.codecs.CodecUtil.validateFooter(CodecUtil.java:448)
> >>>         at
> >>> org.apache.lucene.codecs.CodecUtil.retrieveChecksum(
> CodecUtil.java:433)
> >>>         at
> >>> org.apache.lucene.codecs.lucene50.Lucene50CompoundReader.<init>(
> Lucene50CompoundReader.java:86)
> >>>         at
> >>> org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat.
> getCompoundReader(Lucene50CompoundFormat.java:71)
> >>>         at
> >>> org.apache.lucene.index.IndexWriter.readFieldInfos(
> IndexWriter.java:1016)
> >>>         at
> >>> org.apache.lucene.index.IndexWriter.getFieldNumberMap(
> IndexWriter.java:1033)
> >>>         at org.apache.lucene.index.IndexWriter.<init>(
> IndexWriter.java:938)
> >>>         at
> >>> sewm.bdbox.search.InfomallIndexer.<init>(InfomallIndexer.java:60)
> >>>         at
> >>> sewm.bdbox.search.ThreadedInfomallIndexer.<init>
> (ThreadedInfomallIndexer.java:28)
> >>>         at
> >>> sewm.bdbox.search.ThreadedInfomallIndexer.<init>
> (ThreadedInfomallIndexer.java:21)
> >>>         at
> >>> sewm.bdbox.search.ThreadedInfomallIndexer$Builder.build(
> ThreadedInfomallIndexer.java:72)
> >>>         at
> >>> sewm.bdbox.search.ThreadedInfomallIndexer.main(
> ThreadedInfomallIndexer.java:129)
> >>>
> >>
> >>
> >> it seems 1071082519 is a special number.
> >>
> >> - -
> >>
> >> Ziming Dong
> >> *http://suiyuan2009.github.io/ <http://suiyuan2009.github.io/>*
>



-- 

Ziming Dong
*http://suiyuan2009.github.io/ <http://suiyuan2009.github.io/>*

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