Hi, Lucene has the workaround, so it should not happen, UNLESS you explicitly disable the hack using MMapDirectory#setEnableUnmap(false).
Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: will martin [mailto:wmartin...@gmail.com] > Sent: Friday, November 13, 2015 6:04 PM > To: java-user@lucene.apache.org > Subject: Re: debugging growing index size > > Hi Rob: > > > Doesn’t this look like known SE issue JDK-4724038 and discussed by Peter > Levart and Uwe Schindler on a lucene-dev thread 9/9/2015? > > MappedByteBuffer …. what OS are you on Rob? What JVM? > > http://bugs.java.com/view_bug.do?bug_id=4724038 > > http://mail-archives.apache.org/mod_mbox/lucene- > dev/201509.mbox/%3c55f0461a.2070...@gmail.com%3E > > hth > -will > > > > > On Nov 13, 2015, at 11:23 AM, Rob Audenaerde > <rob.audenae...@gmail.com> wrote: > > > > I'm currently running using NIOFS. It seems to prevent the issue from > > appearing. > > > > This is a second run (with applied deletes etc) > > > > raudenaerd@:/<6>index/index$sudo ls -lSra *.dvd > > -rw-r--r--. 1 apache apache 7993 Nov 13 16:09 _y_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 39048886 Nov 13 17:12 _xod_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 53699972 Nov 13 17:17 _110e_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 112855516 Nov 13 17:19 _12r5_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 151149886 Nov 13 17:13 _y0s_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 222062059 Nov 13 17:17 _z20_Lucene50_0.dvd > > > > raudenaerde:/<6>index/index$sudo ls -lSaa *.dvd > > -rw-r--r--. 1 apache apache 222062059 Nov 13 17:17 _z20_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 151149886 Nov 13 17:13 _y0s_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 112855516 Nov 13 17:19 _12r5_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 53699972 Nov 13 17:17 _110e_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 39048886 Nov 13 17:12 _xod_Lucene50_0.dvd > > -rw-r--r--. 1 apache apache 7993 Nov 13 16:09 _y_Lucene50_0.dvd > > > > > > > > On Thu, Nov 12, 2015 at 3:40 PM, Michael McCandless < > > luc...@mikemccandless.com> wrote: > > > >> Hi Rob, > >> > >> A couple more things: > >> > >> Can you print the value of MMapDirectory.UNMAP_SUPPORTED? > >> > >> Also, can you try your test using NIOFSDirectory instead? Curious if > >> that changes things... > >> > >> Mike McCandless > >> > >> http://blog.mikemccandless.com > >> > >> > >> On Thu, Nov 12, 2015 at 7:28 AM, Rob Audenaerde > >> <rob.audenae...@gmail.com> wrote: > >>> Curious indeed! > >>> > >>> I will turn on the IndexFileDeleter.VERBOSE_REF_COUNTS and recreate > the > >>> logs. Will get back with them in a day hopefully. > >>> > >>> Thanks for the extra logging! > >>> > >>> -Rob > >>> > >>> On Thu, Nov 12, 2015 at 11:34 AM, Michael McCandless < > >>> luc...@mikemccandless.com> wrote: > >>> > >>>> Hmm, curious. > >>>> > >>>> I looked at the [large] infoStream output and I see segment _3ou7 > >>>> present on init of IW, a few getReader calls referencing it, then a > >>>> forceMerge that indeed merges it away, yet I do NOT see IW > attempting > >>>> deletion of its files. > >>>> > >>>> And indeed I see plenty (too many: many times per second?) of > commits > >>>> after that, so the index itself is no longer referencing _3ou7. > >>>> > >>>> If you are failing to close all NRT readers then I would expect _3ou7 > >>>> to be in the lsof output, but it's not. > >>>> > >>>> The NRT readers close method has logic that notifies IndexWriter when > >>>> it's done "needing" the files, to emulate "delete on last close" > >>>> semantics for filesystems like HDFS that don't do that ... it's > >>>> possible something is wrong here. > >>>> > >>>> Can you set the (public, static) boolean > >>>> IndexFileDeleter.VERBOSE_REF_COUNTS to true, and then re- > generate this > >>>> log? This causes IW to log the ref count of each file it's tracking > >>>> ... > >>>> > >>>> I'll also add a bit more verbosity to IW when NRT readers are opened > >>>> and close, for 5.4.0. > >>>> > >>>> Mike McCandless > >>>> > >>>> http://blog.mikemccandless.com > >>>> > >>>> > >>>> On Wed, Nov 11, 2015 at 6:09 AM, Rob Audenaerde > >>>> <rob.audenae...@gmail.com> wrote: > >>>>> Hi all, > >>>>> > >>>>> I'm still debugging the growing-index size. I think closing index > >> readers > >>>>> might help (work in progress), but I can't really see them holding on > >> to > >>>>> files (at least, using lsof ). Restarting the application sheds some > >>>> light, > >>>>> I see logging on files that are no longer referenced. > >>>>> > >>>>> What I see is that there are files in the index-directory, that seem > >> to > >>>>> longer referenced.. > >>>>> > >>>>> I put the output of the infoStream online, because is it rather big > >> (30MB > >>>>> gzipped): http://www.audenaerde.org/lucene/merges.log.gz > >>>>> > >>>>> Output of lsof: (executed 'sudo lsof *' in the index directory ). > >> This > >>>> is > >>>>> on an CentOS box (maybe that influences stuff as well?) > >>>>> > >>>>> COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME > >>>>> java 30581 apache mem REG 253,0 3176094924 18880508 > >>>>> _4gs5_Lucene50_0.dvd > >>>>> java 30581 apache mem REG 253,0 505758610 18880546 _4gs5.fdt > >>>>> java 30581 apache mem REG 253,0 369563337 18880631 > >>>>> _4gs5_Lucene50_0.tim > >>>>> java 30581 apache mem REG 253,0 176344058 18880623 > >>>>> _4gs5_Lucene50_0.pos > >>>>> java 30581 apache mem REG 253,0 378055201 18880606 > >>>>> _4gs5_Lucene50_0.doc > >>>>> java 30581 apache mem REG 253,0 372579599 18880400 > >>>>> _4i5a_Lucene50_0.dvd > >>>>> java 30581 apache mem REG 253,0 82017447 18880748 _4g37.cfs > >>>>> java 30581 apache mem REG 253,0 85376507 18880721 _4fb3.cfs > >>>>> java 30581 apache mem REG 253,0 363493917 18880533 > >>>>> _4ct1_Lucene50_0.dvd > >>>>> java 30581 apache mem REG 253,0 9421892 18880806 _4gjc.cfs > >>>>> java 30581 apache mem REG 253,0 76877461 18880553 _4ct1.fdt > >>>>> java 30581 apache mem REG 253,0 46271330 18880661 > >>>>> _4ct1_Lucene50_0.tim > >>>>> java 30581 apache mem REG 253,0 26911387 18880653 > >>>>> _4ct1_Lucene50_0.pos > >>>>> java 30581 apache mem REG 253,0 54678249 18880568 > >>>>> _4ct1_Lucene50_0.doc > >>>>> java 30581 apache mem REG 253,0 76556587 18880328 _4i5a.fdt > >>>>> java 30581 apache mem REG 253,0 45032159 18880389 > >>>>> _4i5a_Lucene50_0.tim > >>>>> java 30581 apache mem REG 253,0 26486772 18880388 > >>>>> _4i5a_Lucene50_0.pos > >>>>> java 30581 apache mem REG 253,0 55411002 18880362 > >>>>> _4i5a_Lucene50_0.doc > >>>>> java 30581 apache mem REG 253,0 70484185 18880340 _4hkn.cfs > >>>>> java 30581 apache mem REG 253,0 10873921 18880324 _4gpz.cfs > >>>>> java 30581 apache mem REG 253,0 17230506 18880524 _4i11.cfs > >>>>> java 30581 apache mem REG 253,0 6706969 18880575 _4i0t.cfs > >>>>> java 30581 apache mem REG 253,0 15135578 18880624 _4i0i.cfs > >>>>> java 30581 apache mem REG 253,0 15368310 18880717 _4hzp.cfs > >>>>> java 30581 apache mem REG 253,0 5146140 18880583 _4hze.cfs > >>>>> java 30581 apache mem REG 253,0 2917380 18880411 _4gs5.nvd > >>>>> java 30581 apache mem REG 253,0 6871469 18880732 _4hod.cfs > >>>>> java 30581 apache mem REG 253,0 2860341 18880495 _4i84.cfs > >>>>> java 30581 apache mem REG 253,0 835726 18880660 _4i7z.cfs > >>>>> java 30581 apache mem REG 253,0 1005595 18880648 _4i7w.cfs > >>>>> java 30581 apache mem REG 253,0 5639672 18880401 _4i4o.cfs > >>>>> java 30581 apache mem REG 253,0 4388371 18880440 _4i4a.cfs > >>>>> java 30581 apache mem REG 253,0 1151845 18880512 _4i7v.cfs > >>>>> java 30581 apache mem REG 253,0 941773 18880613 _4i7x.cfs > >>>>> java 30581 apache mem REG 253,0 984023 18880588 _4i7o.cfs > >>>>> java 30581 apache mem REG 253,0 1790005 18880619 _4i7y.cfs > >>>>> java 30581 apache mem REG 253,0 466371 18880515 _4ct1.nvd > >>>>> java 30581 apache mem REG 253,0 723280 18880573 _4i7q.cfs > >>>>> java 30581 apache mem REG 253,0 806289 18880517 _4i7h.cfs > >>>>> java 30581 apache mem REG 253,0 17362 18880520 _4i9s.cfs > >>>>> java 30581 apache mem REG 253,0 698362 18880531 _4i9r.cfs > >>>>> java 30581 apache mem REG 253,0 483215 18880406 _4i5a.nvd > >>>>> java 30581 apache mem REG 253,0 14110 18880416 _4i9v.cfs > >>>>> java 30581 apache mem REG 253,0 6121 18880412 _4i9t.cfs > >>>>> java 30581 apache 30wW REG 253,0 0 18877901 write.lock > >>>>> > >>>>> Output of some of the biggest files in the index directory: > >>>>> > >>>>> -rw-r--r--. 1 apache apache 358684577 Nov 11 08:04 _4fjn.cfs > >>>>> -rw-r--r--. 1 apache apache 363493917 Nov 11 07:54 > >> _4ct1_Lucene50_0.dvd > >>>>> -rw-r--r--. 1 apache apache 369563337 Nov 11 08:06 > >> _4gs5_Lucene50_0.tim > >>>>> -rw-r--r--. 1 apache apache 372579599 Nov 11 08:09 > >> _4i5a_Lucene50_0.dvd > >>>>> -rw-r--r--. 1 apache apache 378055201 Nov 11 08:06 > >> _4gs5_Lucene50_0.doc > >>>>> -rw-r--r--. 1 apache apache 427401813 Nov 10 08:14 _3ou7.cfs > >>>>> -rw-r--r--. 1 apache apache 505758610 Nov 11 08:04 _4gs5.fdt > >>>>> -rw-r--r--. 1 apache apache 1107391579 Nov 10 07:55 > >> _3k3a_Lucene50_0.dvd > >>>>> -rw-r--r--. 1 apache apache 3176094924 Nov 11 08:10 > >> _4gs5_Lucene50_0.dvd > >>>>> > >>>>> Note that the 3ou7 and 3k3a segments no longer appear to be in use? 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