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From Ziming Dong <dzm1016397...@gmail.com>
Subject Re: lucene index program won't start after power failure
Date Sun, 25 Sep 2016 09:31:58 GMT
I'll change IO to local. Is there anyway to recover first index? now it can
be opened by checkIndex, we are building index of 7 billion webpages, it
costs much time to rebuild.

On Sat, Sep 24, 2016 at 2:54 AM, Michael McCandless <
lucene@mikemccandless.com> wrote:

> The 'sync' option for an NFS client just means that every write is
> sent immediately across the network.  And it really is useless
> performance loss as long as your app (like Lucene) does the "right
> thing" with fsync.
>
> The more important question is why fsync sent to your NFS client and
> then to the Mac Mini's NFS server failed to actually move all written
> bytes to durable storage.
>
> Can you reproduce this issue if you use a more well trodden IO system,
> e.g. Linux with ext4 on a local IO device?
>
> Mike McCandless
>
> http://blog.mikemccandless.com
>
> On Fri, Sep 23, 2016 at 12:00 AM, Ziming Dong <dzm1016397507@gmail.com>
> wrote:
> > I use the macmini on NFS server side. It seems mount option sync  is
> > useless, just slows down the index program.
> >
> > On Fri, Sep 23, 2016 at 4:43 AM, Michael McCandless
> > <lucene@mikemccandless.com> wrote:
> >>
> >> OK sorry I meant your first index, and it seems to have only one
> >> (broken) segments file.  Can you post the "ls -l" output of that first
> >> index?  It looks like the file was (illegally) filled with 0s, or at
> >> least the first 4 bytes were.
> >>
> >> Lucene writes this file, fsyncs it, does an atomic rename, and fsyncs
> >> the directory, so this should not happen, if your IO system honors
> >> fsync.
> >>
> >> What IO devices are used by the NFS server?
> >>
> >> NFS is not well tested and has several known problems with Lucene so
> >> this is already risky ground...
> >>
> >> Mike McCandless
> >>
> >> http://blog.mikemccandless.com
> >>
> >> On Thu, Sep 22, 2016 at 11:33 AM, Ziming Dong <dzm1016397507@gmail.com>
> >> wrote:
> >> > second index is recovered by checkIndex, I don't know what are in
> second
> >> > index directory before recover.
> >> > checkIndex can't read first index. index filenames are attached.
> >> > I use lucene6.0.0 at the beginning, then I upgrade to lucene6.1.0 to
> >> > continue index.
> >> >
> >> > On Thu, Sep 22, 2016 at 10:17 PM, Michael McCandless
> >> > <lucene@mikemccandless.com> wrote:
> >> >>
> >> >> Do you have 2 separate segments files in that 2nd index?
> >> >>
> >> >> Which exact Lucene version is this?
> >> >>
> >> >> Mike McCandless
> >> >>
> >> >> http://blog.mikemccandless.com
> >> >>
> >> >>
> >> >> On Thu, Sep 22, 2016 at 7:44 AM, Ziming Dong <
> dzm1016397507@gmail.com>
> >> >> wrote:
> >> >> > 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/
> >> >> >
> >> >
> >> >
> >> >
> >> >
> >> > --
> >> >
> >> > Ziming Dong
> >> > http://suiyuan2009.github.io/
> >> >
> >
> >
> >
> >
> > --
> >
> > Ziming Dong
> > http://suiyuan2009.github.io/
> >
>



-- 

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

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