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 < luc...@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 <dzm1016397...@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 > > <luc...@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 <dzm1016397...@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 > >> > <luc...@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 < > dzm1016397...@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 > >> >> > <luc...@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 > >> >> >> <luc...@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 > >> >> >> > <dzm1016397...@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/>*