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From Peter Keegan <peterlkee...@gmail.com>
Subject Re: IndexWriter.getReader.getVersion behavior
Date Fri, 26 Feb 2010 20:15:47 GMT
Great, I'll give it a try.
Thanks!

On Fri, Feb 26, 2010 at 3:11 PM, Michael McCandless <
lucene@mikemccandless.com> wrote:

> Note that it's a BG merge (not commit)...
>
> You can use the new (as of 2.9 I think) IndexWriter.waitForMerges API?
>  If you call that, then call .getReader().getVersion(), then close &
> open the writer, I think (but you better test to be sure!) the next
> .getReader().getVersion() should always match.
>
> Mike
>
> On Fri, Feb 26, 2010 at 2:40 PM, Peter Keegan <peterlkeegan@gmail.com>
> wrote:
> > Is there a way for the application to wait for the BG commit to finish
> > before it calls IW.close? If so, would this prevent the extra version?
> The
> > extra version causes the app. to think that the external data it
> committed
> > is out of synch with the index, which requires the app to do extra
> > processing to re-synch.
> >
> > Thanks,
> > Peter
> >
> >
> > On Fri, Feb 26, 2010 at 12:40 PM, Michael McCandless <
> > lucene@mikemccandless.com> wrote:
> >
> >> OK -- I can now see what happened.
> >>
> >> There was a merge still running, when you called IW.commit (Lucene
> >> Merge Thread #0).  Because IW.commit does not wait for BG merges to
> >> finish, but IW.close does (by default), this means you'll pick up an
> >> extra version whenever a merge is running when you call close.
> >>
> >> Mike
> >>
> >> On Thu, Feb 25, 2010 at 2:52 PM, Peter Keegan <peterlkeegan@gmail.com>
> >> wrote:
> >> > I'm pretty sure this output occurred when the version number skipped
> +1.
> >> > The line containing '============'. separates the close/open
> IndexWriter.
> >> >
> >> > IFD [Indexer]: setInfoStream
> >> >
> >>
> deletionPolicy=org.apache.lucene.index.KeepOnlyLastCommitDeletionPolicy@646f9dd9
> >> > IW 9 [Indexer]: setInfoStream:
> >> > dir=org.apache.lucene.store.SimpleFSDirectory@<obfuscated
> >> > pathname>\lresumes1.search.main.1 autoCommit=false
> >> >
> >>
> mergePolicy=org.apache.lucene.index.LogByteSizeMergePolicy@5be44512mergeScheduler
> >>
> =org.apache.lucene.index.ConcurrentMergeScheduler@6772cfdframBufferSizeMB
> >> =16.0
> >> > maxBufferedDocs=-1 maxBuffereDeleteTerms=-1
> >> > maxFieldLength=100000 index=_a:C9780 _b:C1204->_b _c:C717->_b
> >> _d:C1220->_d
> >> > _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h _i:C703->_h
> >> > IW 9 [Indexer]: flush at getReader
> >> > IW 9 [Indexer]:   flush: segment=null docStoreSegment=null
> >> docStoreOffset=0
> >> > flushDocs=false flushDeletes=true flushDocStores=false numDocs=0
> >> > numBufDelTerms=0
> >> > IW 9 [Indexer]:   index before flush _a:C9780 _b:C1204->_b _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > IW 9 [UpdWriterBuild : 9]: DW:   RAM: now flush @ usedMB=15.816
> >> > allocMB=15.816 deletesMB=0.203 triggerMB=16
> >> > IW 9 [UpdWriterBuild : 9]:   flush: segment=_j docStoreSegment=_j
> >> > docStoreOffset=0 flushDocs=true flushDeletes=false
> flushDocStores=false
> >> > numDocs=1456 numBufDelTerms=1456
> >> > IW 9 [UpdWriterBuild : 9]:   index before flush _a:C9780 _b:C1204->_b
> >> > _c:C717->_b _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f
> >> _h:C1291->_h
> >> > _i:C703->_h
> >> > IW 9 [UpdWriterBuild : 9]: DW: flush postings as segment _j
> numDocs=1456
> >> > IW 9 [UpdWriterBuild : 9]: DW:   oldRAMSize=16584704
> >> newFlushedSize=4969789
> >> > docs/MB=307.202 new/old=29.966%
> >> > IFD [UpdWriterBuild : 9]: now checkpoint "segments_b" [10 segments ;
> >> > isCommit = false]
> >> > IFD [UpdWriterBuild : 9]: now checkpoint "segments_b" [10 segments ;
> >> > isCommit = false]
> >> > IW 9 [UpdWriterBuild : 9]: LMP: findMerges: 10 segments
> >> > IW 9 [UpdWriterBuild : 9]: LMP:   level 6.863048 to 7.613048: 1
> segments
> >> > IW 9 [UpdWriterBuild : 9]: LMP:   level 6.2247195 to 6.696363: 9
> segments
> >> > IW 9 [UpdWriterBuild : 9]: CMS: now merge
> >> > IW 9 [UpdWriterBuild : 9]: CMS:   index: _a:C9780 _b:C1204->_b
> >> _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j
> >> > IW 9 [UpdWriterBuild : 9]: CMS:   no more merges pending; now return
> >> > IW 9 [Indexer]: prepareCommit: flush
> >> > IW 9 [Indexer]:   flush: segment=_k docStoreSegment=_j
> >> docStoreOffset=1456
> >> > flushDocs=true flushDeletes=true flushDocStores=true numDocs=509
> >> > numBufDelTerms=509
> >> > IW 9 [Indexer]:   index before flush _a:C9780 _b:C1204->_b _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j
> >> > IW 9 [Indexer]:   flush shared docStore segment _j
> >> > IW 9 [Indexer]: DW: closeDocStore: 2 files to flush to segment _j
> >> > numDocs=1965
> >> > IW 9 [Indexer]: DW: flush postings as segment _k numDocs=509
> >> > IW 9 [Indexer]: DW:   oldRAMSize=7483392 newFlushedSize=1854970
> >> > docs/MB=287.727 new/old=24.788%
> >> > IFD [Indexer]: now checkpoint "segments_b" [11 segments ; isCommit =
> >> false]
> >> > IW 9 [Indexer]: DW: apply 1965 buffered deleted terms and 0 deleted
> >> docIDs
> >> > and 0 deleted queries on 11 segments.
> >> > IFD [Indexer]: now checkpoint "segments_b" [11 segments ; isCommit =
> >> false]
> >> > IW 9 [Indexer]: LMP: findMerges: 11 segments
> >> > IW 9 [Indexer]: LMP:   level 6.863048 to 7.613048: 1 segments
> >> > IW 9 [Indexer]: LMP:   level 6.2247195 to 6.696363: 10 segments
> >> > IW 9 [Indexer]: LMP:     1 to 11: add this merge
> >> > IW 9 [Indexer]: add merge to pendingMerges: _b:C1204->_b _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j _k:C509->_j [total 1 pending]
> >> > IW 9 [Indexer]: CMS: now merge
> >> > IW 9 [Indexer]: CMS:   index: _a:C9780 _b:C1204->_b _c:C717->_b
> >> _d:C1220->_d
> >> > _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h _i:C703->_h
> >> _j:C1456->_j
> >> > _k:C509->_j
> >> > IW 9 [Indexer]: CMS:   consider merge _b:C1204->_b _c:C717->_b
> >> _d:C1220->_d
> >> > _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h _i:C703->_h
> >> _j:C1456->_j
> >> > _k:C509->_j into _l [mergeDocStores]
> >> > IW 9 [Indexer]: CMS:     launch new thread [Lucene Merge Thread #0]
> >> > IW 9 [Indexer]: CMS:   no more merges pending; now return
> >> > IW 9 [Indexer]: startCommit(): start sizeInBytes=0
> >> > IW 9 [Indexer]: startCommit index=_a:C9780 _b:C1204->_b _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j _k:C509->_j changeCount=7
> >> > IW 9 [Lucene Merge Thread #0]: CMS:   merge thread: start
> >> > IW 9 [Indexer]: now sync _k.fnm
> >> > IW 9 [Lucene Merge Thread #0]: now merge
> >> >  merge=_b:C1204->_b _c:C717->_b _d:C1220->_d _e:C778->_d _f:C1173->_f
> >> > _g:C858->_f _h:C1291->_h _i:C703->_h _j:C1456->_j _k:C509->_j
into _l
> >> > [mergeDocStores]
> >> >  merge=org.apache.lucene.index.MergePolicy$OneMerge@5203ef34
> >> >  index=_a:C9780 _b:C1204->_b _c:C717->_b _d:C1220->_d _e:C778->_d
> >> > _f:C1173->_f _g:C858->_f _h:C1291->_h _i:C703->_h _j:C1456->_j
> >> _k:C509->_j
> >> > IW 9 [Lucene Merge Thread #0]: merging _b:C1204->_b _c:C717->_b
> >> _d:C1220->_d
> >> > _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h _i:C703->_h
> >> _j:C1456->_j
> >> > _k:C509->_j into _l [mergeDocStores]
> >> > IW 9 [Indexer]: now sync _k.tii
> >> > IW 9 [Indexer]: now sync _k.tis
> >> > IW 9 [Lucene Merge Thread #0]: merge: total 9909 docs
> >> > IW 9 [Indexer]: now sync _j.tis
> >> > IW 9 [Indexer]: now sync _j.tii
> >> > IW 9 [Indexer]: now sync _j.fdx
> >> > IW 9 [Indexer]: now sync _j.fdt
> >> > IW 9 [Indexer]: now sync _k.prx
> >> > IW 9 [Indexer]: now sync _k.nrm
> >> > IW 9 [Indexer]: now sync _j.nrm
> >> > IW 9 [Indexer]: now sync _j.prx
> >> > IW 9 [Indexer]: now sync _j.fnm
> >> > IW 9 [Indexer]: now sync _k.frq
> >> > IW 9 [Indexer]: now sync _j.frq
> >> > IW 9 [Indexer]: done all syncs
> >> > IW 9 [Indexer]: flush at getReader
> >> > IW 9 [Indexer]:   flush: segment=null docStoreSegment=_k
> docStoreOffset=0
> >> > flushDocs=false flushDeletes=true flushDocStores=true numDocs=0
> >> > numBufDelTerms=0
> >> > IW 9 [Indexer]:   index before flush _a:C9780 _b:C1204->_b _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j _k:C509->_j
> >> > IW 9 [Indexer]:   flush shared docStore segment _k
> >> > IW 9 [Indexer]: DW: closeDocStore: 0 files to flush to segment _k
> >> numDocs=0
> >> > IW 9 [Indexer]: commit: start
> >> > IW 9 [Indexer]: commit: already prepared
> >> > IW 9 [Indexer]: commit: pendingCommit != null
> >> > IW 9 [Indexer]: commit: wrote segments file "segments_c"
> >> > IFD [Indexer]: now checkpoint "segments_c" [11 segments ; isCommit =
> >> true]
> >> > IFD [Indexer]: deleteCommits: now decRef commit "segments_b"
> >> > IFD [Indexer]: delete "segments_b"
> >> > IW 9 [Indexer]: commit: done
> >> > IW 9 [Indexer]: flush at getReader
> >> > IW 9 [Indexer]:   flush: segment=null docStoreSegment=null
> >> docStoreOffset=0
> >> > flushDocs=false flushDeletes=true flushDocStores=false numDocs=0
> >> > numBufDelTerms=0
> >> > IW 9 [Indexer]:   index before flush _a:C9780 _b:C1204->_b _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j _k:C509->_j
> >> > IW 9 [Indexer]: now flush at close
> >> > IW 9 [Indexer]:   flush: segment=null docStoreSegment=null
> >> docStoreOffset=0
> >> > flushDocs=false flushDeletes=true flushDocStores=false numDocs=0
> >> > numBufDelTerms=0
> >> > IW 9 [Indexer]:   index before flush _a:C9780 _b:C1204->_b _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j _k:C509->_j
> >> > IW 9 [Indexer]: CMS: now merge
> >> > IW 9 [Indexer]: CMS:   index: _a:C9780 _b:C1204->_b _c:C717->_b
> >> _d:C1220->_d
> >> > _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h _i:C703->_h
> >> _j:C1456->_j
> >> > _k:C509->_j
> >> > IW 9 [Indexer]: CMS:   no more merges pending; now return
> >> > IW 9 [Lucene Merge Thread #0]: commitMerge: _b:C1204->_b _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j _k:C509->_j into _l [mergeDocStores] index=_a:C9780
> >> > _b:C1204->_b _c:C717->_b _d:C1220->_d _e:C778->_d _f:C1173->_f
> >> _g:C858->_f
> >> > _h:C1291->_h _i:C703->_h _j:C1456->_j _k:C509->_j
> >> > IW 9 [Lucene Merge Thread #0]: commitMergeDeletes _b:C1204->_b
> >> _c:C717->_b
> >> > _d:C1220->_d _e:C778->_d _f:C1173->_f _g:C858->_f _h:C1291->_h
> >> _i:C703->_h
> >> > _j:C1456->_j _k:C509->_j into _l [mergeDocStores]
> >> > IFD [Lucene Merge Thread #0]: now checkpoint "segments_c" [2 segments
> ;
> >> > isCommit = false]
> >> > IFD [Lucene Merge Thread #0]: now checkpoint "segments_c" [2 segments
> ;
> >> > isCommit = false]
> >> > IW 9 [Lucene Merge Thread #0]: CMS:   merge thread: done
> >> > IW 9 [Indexer]: now call final commit()
> >> > IW 9 [Indexer]: startCommit(): start sizeInBytes=0
> >> > IW 9 [Indexer]: startCommit index=_a:C9780 _l:C9909 changeCount=8
> >> > IW 9 [Indexer]: now sync _l.nrm
> >> > IW 9 [Indexer]: now sync _l.fnm
> >> > IW 9 [Indexer]: now sync _l.prx
> >> > IW 9 [Indexer]: now sync _l.frq
> >> > IW 9 [Indexer]: now sync _l.tis
> >> > IW 9 [Indexer]: now sync _l.fdx
> >> > IW 9 [Indexer]: now sync _l.fdt
> >> > IW 9 [Indexer]: now sync _l.tii
> >> > IW 9 [Indexer]: done all syncs
> >> > IW 9 [Indexer]: commit: pendingCommit != null
> >> > IW 9 [Indexer]: commit: wrote segments file "segments_d"
> >> > IFD [Indexer]: now checkpoint "segments_d" [2 segments ; isCommit =
> true]
> >> > IFD [Indexer]: deleteCommits: now decRef commit "segments_c"
> >> > IFD [Indexer]: delete "_h.prx"
> >> > IFD [Indexer]: delete "_f.tis"
> >> > IFD [Indexer]: delete "_g.tis"
> >> > IFD [Indexer]: delete "_d.tii"
> >> > IFD [Indexer]: delete "_e.frq"
> >> > IFD [Indexer]: delete "_k.fnm"
> >> > IFD [Indexer]: delete "_c.tii"
> >> > IFD [Indexer]: delete "_h.nrm"
> >> > IFD [Indexer]: delete "_i.tis"
> >> > IFD [Indexer]: delete "_k.tii"
> >> > IFD [Indexer]: delete "_h.fdt"
> >> > IFD [Indexer]: delete "_c.tis"
> >> > IFD [Indexer]: delete "_g.tii"
> >> > IFD [Indexer]: delete "_h.fdx"
> >> > IFD [Indexer]: delete "_c.nrm"
> >> > IFD [Indexer]: delete "_i.tii"
> >> > IFD [Indexer]: delete "_d.tis"
> >> > IFD [Indexer]: delete "_f.tii"
> >> > IFD [Indexer]: delete "_e.fnm"
> >> > IFD [Indexer]: delete "_k.tis"
> >> > IFD [Indexer]: delete "_d.frq"
> >> > IFD [Indexer]: delete "_f.nrm"
> >> > IFD [Indexer]: delete "_h.fnm"
> >> > IFD [Indexer]: delete "segments_c"
> >> > IFD [Indexer]: delete "_c.prx"
> >> > IFD [Indexer]: delete "_d.fnm"
> >> > IFD [Indexer]: delete "_h.frq"
> >> > IFD [Indexer]: delete "_h.tis"
> >> > IFD [Indexer]: delete "_f.fdt"
> >> > IFD [Indexer]: delete "_j.tis"
> >> > IFD [Indexer]: delete "_f.fdx"
> >> > IFD [Indexer]: delete "_g.nrm"
> >> > IFD [Indexer]: delete "_f.prx"
> >> > IFD [Indexer]: delete "_j.tii"
> >> > IFD [Indexer]: delete "_h.tii"
> >> > IFD [Indexer]: delete "_e.prx"
> >> > IFD [Indexer]: delete "_c.frq"
> >> > IFD [Indexer]: delete "_i.prx"
> >> > IFD [Indexer]: delete "_j.fdx"
> >> > IFD [Indexer]: delete "_i.nrm"
> >> > IFD [Indexer]: delete "_j.fdt"
> >> > IFD [Indexer]: delete "_k.prx"
> >> > IFD [Indexer]: delete "_b.nrm"
> >> > IFD [Indexer]: delete "_e.tis"
> >> > IFD [Indexer]: delete "_e.tii"
> >> > IFD [Indexer]: delete "_g.fnm"
> >> > IFD [Indexer]: delete "_k.nrm"
> >> > IFD [Indexer]: delete "_j.nrm"
> >> > IFD [Indexer]: delete "_j.prx"
> >> > IFD [Indexer]: delete "_e.nrm"
> >> > IFD [Indexer]: delete "_g.prx"
> >> > IFD [Indexer]: delete "_b.prx"
> >> > IFD [Indexer]: delete "_i.frq"
> >> > IFD [Indexer]: delete "_b.tis"
> >> > IFD [Indexer]: delete "_d.prx"
> >> > IFD [Indexer]: delete "_g.frq"
> >> > IFD [Indexer]: delete "_d.fdx"
> >> > IFD [Indexer]: delete "_b.tii"
> >> > IFD [Indexer]: delete "_b.frq"
> >> > IFD [Indexer]: delete "_d.fdt"
> >> > IFD [Indexer]: delete "_f.fnm"
> >> > IFD [Indexer]: delete "_j.fnm"
> >> > IFD [Indexer]: delete "_b.fnm"
> >> > IFD [Indexer]: delete "_d.nrm"
> >> > IFD [Indexer]: delete "_b.fdt"
> >> > IFD [Indexer]: delete "_k.frq"
> >> > IFD [Indexer]: delete "_c.fnm"
> >> > IFD [Indexer]: delete "_j.frq"
> >> > IFD [Indexer]: delete "_i.fnm"
> >> > IFD [Indexer]: delete "_f.frq"
> >> > IFD [Indexer]: delete "_b.fdx"
> >> > IW 9 [Indexer]: commit: done
> >> > IW 9 [Indexer]: at close: _a:C9780 _l:C9909
> >> >
> >> > =====================================================
> >> >
> >> > IFD [Indexer]: setInfoStream
> >> >
> >>
> deletionPolicy=org.apache.lucene.index.KeepOnlyLastCommitDeletionPolicy@68d349c1
> >> > IW 10 [Indexer]: setInfoStream:
> >> > dir=org.apache.lucene.store.SimpleFSDirectory@<obfuscated
> >> > pathname>\lresumes1.search.main.1 autoCommit=false
> >> >
> >>
> mergePolicy=org.apache.lucene.index.LogByteSizeMergePolicy@78f53abmergeScheduler
> >>
> =org.apache.lucene.index.ConcurrentMergeScheduler@52be036dramBufferSizeMB
> >> =16.0
> >> > maxBufferedDocs=-1 maxBuffereDeleteTerms=-1
> >> > maxFieldLength=100000 index=_a:C9780 _l:C9909
> >> > IW 10 [Indexer]: flush at getReader
> >> > IW 10 [Indexer]:   flush: segment=null docStoreSegment=null
> >> docStoreOffset=0
> >> > flushDocs=false flushDeletes=true flushDocStores=false numDocs=0
> >> > numBufDelTerms=0
> >> > IW 10 [Indexer]:   index before flush _a:C9780 _l:C9909
> >> > IW 10 [UpdWriterBuild : 10]: DW:   RAM: now flush @ usedMB=15.789
> >> > allocMB=15.789 deletesMB=0.212 triggerMB=16
> >> > IW 10 [UpdWriterBuild : 10]:   flush: segment=_m docStoreSegment=_m
> >> > docStoreOffset=0 flushDocs=true flushDeletes=false
> flushDocStores=false
> >> > numDocs=1526 numBufDelTerms=1526
> >> > IW 10 [UpdWriterBuild : 10]:   index before flush _a:C9780 _l:C9909
> >> > IW 10 [UpdWriterBuild : 10]: DW: flush postings as segment _m
> >> numDocs=1526
> >> > IW 10 [UpdWriterBuild : 10]: DW:   oldRAMSize=16556032
> >> > newFlushedSize=4788823 docs/MB=334.138 new/old=28.925%
> >> > IFD [UpdWriterBuild : 10]: now checkpoint "segments_d" [3 segments ;
> >> > isCommit = false]
> >> > IFD [UpdWriterBuild : 10]: now checkpoint "segments_d" [3 segments ;
> >> > isCommit = false]
> >> > IW 10 [UpdWriterBuild : 10]: LMP: findMerges: 3 segments
> >> > IW 10 [UpdWriterBuild : 10]: LMP:   level 6.8642592 to 7.6142592: 2
> >> segments
> >> > IW 10 [UpdWriterBuild : 10]: LMP:   level 6.2247195 to 6.6802545: 1
> >> segments
> >> > IW 10 [UpdWriterBuild : 10]: CMS: now merge
> >> > IW 10 [UpdWriterBuild : 10]: CMS:   index: _a:C9780 _l:C9909
> _m:C1526->_m
> >> > IW 10 [UpdWriterBuild : 10]: CMS:   no more merges pending; now return
> >> > IW 10 [Indexer]: prepareCommit: flush
> >> > IW 10 [Indexer]:   flush: segment=_n docStoreSegment=_m
> >> docStoreOffset=1526
> >> > flushDocs=true flushDeletes=true flushDocStores=true numDocs=501
> >> > numBufDelTerms=501
> >> > IW 10 [Indexer]:   index before flush _a:C9780 _l:C9909 _m:C1526->_m
> >> > IW 10 [Indexer]:   flush shared docStore segment _m
> >> > IW 10 [Indexer]: DW: closeDocStore: 2 files to flush to segment _m
> >> > numDocs=2027
> >> > IW 10 [Indexer]: DW: flush postings as segment _n numDocs=501
> >> > IW 10 [Indexer]: DW:   oldRAMSize=6927360 newFlushedSize=1659342
> >> > docs/MB=316.593 new/old=23.953%
> >> > IFD [Indexer]: now checkpoint "segments_d" [4 segments ; isCommit =
> >> false]
> >> > IW 10 [Indexer]: DW: apply 2027 buffered deleted terms and 0 deleted
> >> docIDs
> >> > and 0 deleted queries on 4 segments.
> >> > IFD [Indexer]: now checkpoint "segments_d" [4 segments ; isCommit =
> >> false]
> >> > IW 10 [Indexer]: LMP: findMerges: 4 segments
> >> > IW 10 [Indexer]: LMP:   level 6.8642592 to 7.6142592: 2 segments
> >> > IW 10 [Indexer]: LMP:   level 6.2247195 to 6.6802545: 1 segments
> >> > IW 10 [Indexer]: LMP:   level -1.0 to 6.220011: 1 segments
> >> > IW 10 [Indexer]: CMS: now merge
> >> > IW 10 [Indexer]: CMS:   index: _a:C9780 _l:C9909 _m:C1526->_m
> _n:C501->_m
> >> > IW 10 [Indexer]: CMS:   no more merges pending; now return
> >> > IW 10 [Indexer]: startCommit(): start sizeInBytes=0
> >> > IW 10 [Indexer]: startCommit index=_a:C9780 _l:C9909 _m:C1526->_m
> >> > _n:C501->_m changeCount=6
> >> > IW 10 [Indexer]: now sync _m.frq
> >> > IW 10 [Indexer]: now sync _m.prx
> >> > IW 10 [Indexer]: now sync _n.tis
> >> > IW 10 [Indexer]: now sync _m.tis
> >> > IW 10 [Indexer]: now sync _n.frq
> >> > IW 10 [Indexer]: now sync _n.tii
> >> > IW 10 [Indexer]: now sync _m.tii
> >> > IW 10 [Indexer]: now sync _m.fnm
> >> > IW 10 [Indexer]: now sync _n.fnm
> >> > IW 10 [Indexer]: now sync _n.nrm
> >> > IW 10 [Indexer]: now sync _n.prx
> >> > IW 10 [Indexer]: now sync _m.nrm
> >> > IW 10 [Indexer]: now sync _m.fdt
> >> > IW 10 [Indexer]: now sync _m.fdx
> >> > IW 10 [Indexer]: done all syncs
> >> > IW 10 [Indexer]: flush at getReader
> >> > IW 10 [Indexer]:   flush: segment=null docStoreSegment=_n
> >> docStoreOffset=0
> >> > flushDocs=false flushDeletes=true flushDocStores=true numDocs=0
> >> > numBufDelTerms=0
> >> > IW 10 [Indexer]:   index before flush _a:C9780 _l:C9909 _m:C1526->_m
> >> > _n:C501->_m
> >> > IW 10 [Indexer]:   flush shared docStore segment _n
> >> > IW 10 [Indexer]: DW: closeDocStore: 0 files to flush to segment _n
> >> numDocs=0
> >> > IW 10 [Indexer]: commit: start
> >> > IW 10 [Indexer]: commit: already prepared
> >> > IW 10 [Indexer]: commit: pendingCommit != null
> >> > IW 10 [Indexer]: commit: wrote segments file "segments_e"
> >> > IFD [Indexer]: now checkpoint "segments_e" [4 segments ; isCommit =
> true]
> >> > IFD [Indexer]: deleteCommits: now decRef commit "segments_d"
> >> > IFD [Indexer]: delete "segments_d"
> >> > IW 10 [Indexer]: commit: done
> >> > IW 10 [Indexer]: flush at getReader
> >> > IW 10 [Indexer]:   flush: segment=null docStoreSegment=null
> >> docStoreOffset=0
> >> > flushDocs=false flushDeletes=true flushDocStores=false numDocs=0
> >> > numBufDelTerms=0
> >> > IW 10 [Indexer]:   index before flush _a:C9780 _l:C9909 _m:C1526->_m
> >> > _n:C501->_m
> >> > IW 10 [Indexer]: now flush at close
> >> > IW 10 [Indexer]:   flush: segment=null docStoreSegment=null
> >> docStoreOffset=0
> >> > flushDocs=false flushDeletes=true flushDocStores=false numDocs=0
> >> > numBufDelTerms=0
> >> > IW 10 [Indexer]:   index before flush _a:C9780 _l:C9909 _m:C1526->_m
> >> > _n:C501->_m
> >> > IW 10 [Indexer]: CMS: now merge
> >> > IW 10 [Indexer]: CMS:   index: _a:C9780 _l:C9909 _m:C1526->_m
> _n:C501->_m
> >> > IW 10 [Indexer]: CMS:   no more merges pending; now return
> >> > IW 10 [Indexer]: now call final commit()
> >> > IW 10 [Indexer]: startCommit(): start sizeInBytes=0
> >> > IW 10 [Indexer]:   skip startCommit(): no changes pending
> >> > IW 10 [Indexer]: commit: pendingCommit == null; skip
> >> > IW 10 [Indexer]: commit: done
> >> > IW 10 [Indexer]: at close: _a:C9780 _l:C9909 _m:C1526->_m _n:C501->_m
> >> >
> >> >
> >> > Peter
> >> >
> >> > On Thu, Feb 25, 2010 at 1:13 PM, Michael McCandless <
> >> > lucene@mikemccandless.com> wrote:
> >> >
> >> >> Do you know the place in the infoStream output where you got a reader
> >> >> with the wrong (unexplained extra +1) version?  If so, can you post
> >> >> the infoStream output up to that point?
> >> >>
> >> >> Mike
> >> >>
> >> >> On Thu, Feb 25, 2010 at 10:22 AM, Peter Keegan <
> peterlkeegan@gmail.com>
> >> >> wrote:
> >> >> > I've reproduced this and I have a bunch of infoStream log files.
> Since
> >> >> the
> >> >> > messages have no timestamps, it's hard to tell where the relevant
> >> entries
> >> >> > are. What should I be looking for?
> >> >> >
> >> >> > Peter
> >> >> >
> >> >> > On Mon, Feb 22, 2010 at 3:58 PM, Peter Keegan <
> peterlkeegan@gmail.com
> >> >> >wrote:
> >> >> >
> >> >> >> I'm pretty sure there are flushes and segment merges going
on, but
> as
> >> >> you
> >> >> >> said, that shouldn't affect the version increment. I'll see
what I
> >> can
> >> >> do to
> >> >> >> get infoStream output.
> >> >> >>
> >> >> >> Thanks,
> >> >> >> Peter
> >> >> >>
> >> >> >>
> >> >> >> On Mon, Feb 22, 2010 at 2:30 PM, Michael McCandless <
> >> >> >> lucene@mikemccandless.com> wrote:
> >> >> >>
> >> >> >>> Well I'm at a loss then.  The version should only increment
on
> >> commit.
> >> >> >>>
> >> >> >>> Can you make it all happen when infoStream is on, and
post back?
> >> >> >>>
> >> >> >>> Mike
> >> >> >>>
> >> >> >>> On Mon, Feb 22, 2010 at 12:35 PM, Peter Keegan <
> >> peterlkeegan@gmail.com
> >> >> >
> >> >> >>> wrote:
> >> >> >>> > Only one writer thread and one writer process.
> >> >> >>> > I'm calling IndexWriter(Directory d, Analyzer a,
boolean
> create,
> >> >> >>> > MaxFieldLength mfl), which sets autocommit=false.
> >> >> >>> >
> >> >> >>> > Peter
> >> >> >>> >
> >> >> >>> > On Mon, Feb 22, 2010 at 12:24 PM, Michael McCandless
<
> >> >> >>> > lucene@mikemccandless.com> wrote:
> >> >> >>> >
> >> >> >>> >> That's curious.
> >> >> >>> >>
> >> >> >>> >> It's only on prepareCommit (or, commit, if you
didn't first
> >> prepare,
> >> >> >>> >> since that will call prepareCommit internally)
that this
> version
> >> >> >>> >> should increase.
> >> >> >>> >>
> >> >> >>> >> Is there only 1 thread doing this?
> >> >> >>> >>
> >> >> >>> >> Oh, and, are you passing false for autoCommit?
> >> >> >>> >>
> >> >> >>> >> Mike
> >> >> >>> >>
> >> >> >>> >> On Mon, Feb 22, 2010 at 11:43 AM, Peter Keegan
<
> >> >> peterlkeegan@gmail.com
> >> >> >>> >
> >> >> >>> >> wrote:
> >> >> >>> >> > Using Lucene 2.9.1, I have the following
pseudocode which
> gets
> >> >> >>> repeated
> >> >> >>> >> at
> >> >> >>> >> > regular intervals:
> >> >> >>> >> >
> >> >> >>> >> > 1. FSDirectory dir = FSDirectory.open(java.io.File);
> >> >> >>> >> > 2. dir.setLockFactory(new SingleInstanceLockFactory());
> >> >> >>> >> > 3. IndexWriter writer = new IndexWriter(dir,
Analyzer,
> false,
> >> >> >>> >> maxFieldLen)
> >> >> >>> >> > 4. writer.getReader().getVersion();
> >> >> >>> >> > 5. writer.prepareCommit();
> >> >> >>> >> > 6. writer.getReader().getVersion();
> >> >> >>> >> > 7. writer.commit();
> >> >> >>> >> > 8. writer.close();
> >> >> >>> >> >
> >> >> >>> >> > I'm using the version number to keep external
data in synch
> >> with
> >> >> the
> >> >> >>> >> index.
> >> >> >>> >> > Usually, the version number from (6) is
1 greater than from
> (4)
> >> >> and
> >> >> >>> the
> >> >> >>> >> > version from (4) equals the version from
the previous (6).
> At
> >> >> least
> >> >> >>> once
> >> >> >>> >> a
> >> >> >>> >> > day, however, the version from (4) is 1
greater than from
> the
> >> >> >>> previous
> >> >> >>> >> (6).
> >> >> >>> >> > What would explain this sporadic behavior
of version
> numbers?
> >> >> >>> >> >
> >> >> >>> >> > Thanks,
> >> >> >>> >> > Peter
> >> >> >>> >> >
> >> >> >>> >>
> >> >> >>> >>
> >> >> ---------------------------------------------------------------------
> >> >> >>> >> To unsubscribe, e-mail:
> java-user-unsubscribe@lucene.apache.org
> >> >> >>> >> For additional commands, e-mail:
> >> java-user-help@lucene.apache.org
> >> >> >>> >>
> >> >> >>> >>
> >> >> >>> >
> >> >> >>>
> >> >> >>>
> >> ---------------------------------------------------------------------
> >> >> >>> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> >> >> >>> For additional commands, e-mail:
> java-user-help@lucene.apache.org
> >> >> >>>
> >> >> >>>
> >> >> >>
> >> >> >
> >> >>
> >> >> ---------------------------------------------------------------------
> >> >> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> >> >> For additional commands, e-mail: java-user-help@lucene.apache.org
> >> >>
> >> >>
> >> >
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> >> For additional commands, e-mail: java-user-help@lucene.apache.org
> >>
> >>
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
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>
>

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