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The following problem was reported via the automated error reporting: Message: An internal error occurred during: "Indexing help...". java.lang.ClassCastException: class org.apache.lucene.codecs.lucene50.Lucene50PostingsFormat at java.lang.Class.asSubclass(Class.java:3404) at org.apache.lucene.util.SPIClassIterator.next(SPIClassIterator.java:158) at org.apache.lucene.util.NamedSPILoader.reload(NamedSPILoader.java:70) at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:51) at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:38) at org.apache.lucene.codecs.PostingsFormat$Holder.<clinit>(PostingsFormat.java:49) at org.apache.lucene.codecs.PostingsFormat.forName(PostingsFormat.java:112) at org.apache.lucene.codecs.lucene60.Lucene60Codec.<init>(Lucene60Codec.java:167) at org.apache.lucene.codecs.lucene60.Lucene60Codec.<init>(Lucene60Codec.java:82) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeConstructorAccessorImpl.java:-2) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at org.apache.lucene.util.NamedSPILoader.reload(NamedSPILoader.java:72) at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:49) at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:38) at org.apache.lucene.codecs.Codec$Holder.<clinit>(Codec.java:47) at org.apache.lucene.codecs.Codec.forName(Codec.java:116) at org.apache.lucene.index.SegmentInfos.readCodec(SegmentInfos.java:417) at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:349) at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:284) at org.apache.lucene.index.StandardDirectoryReader$1.doBody(StandardDirectoryReader.java:56) at org.apache.lucene.index.StandardDirectoryReader$1.doBody(StandardDirectoryReader.java:53) at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:685) at org.apache.lucene.index.StandardDirectoryReader.open(StandardDirectoryReader.java:76) at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:63) at org.eclipse.help.internal.search.SearchIndex.<init>(SearchIndex.java:202) at org.eclipse.help.internal.search.SearchIndex.<init>(SearchIndex.java:156) at org.eclipse.help.internal.search.SearchIndexWithIndexingProgress.<init>(SearchIndexWithIndexingProgress.java:24) at org.eclipse.help.internal.search.LocalSearchManager.getIndex(LocalSearchManager.java:183) at org.eclipse.help.internal.search.federated.IndexerJob.run(IndexerJob.java:26) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56) The reporter(s) left the following comment(s): --- Andreas Sewe wrote on 2689: --- I have Ctrlflow Code Seach Professional installed (from <https://marketplace.eclipse.org/content/ctrlflow-code-search>) which ships with a Lucene 5.2.1 (not from Orbit, though). Apparently, this causes the Lucene 5.x and 6.x classes to be wired in a bad way. Bundles: | org.eclipse.core.jobs | 3.8.0.v20161110-0346 | 3.8.0.v20161110-0346 | | org.eclipse.help | 3.8.0.v20160823-1530 | 3.8.0.v20160823-1530 | Operating Systems: | MacOSX | 10.10.5 | 10.10.5 | The above information is a snapshot of the collected data. Visit https://dev.eclipse.org/recommenders/committers/aeri/v2/#!/problems/5854158ce4b08535e634268a for the latest data. Thank you for your assistance. Your friendly error-reports-inbox.
This happened while testing Oxygen M4 (Java EPP package) and installing Ctrlflow Code Search Professional [1] on top it.' Some infos from the OSGi console: osgi> ss | grep lucene 45 RESOLVED org.apache.lucene.core_3.5.0.v20120725-1805 474 RESOLVED org.apache.lucene.analyzers-common_6.1.0.v20161115-1612 475 RESOLVED org.apache.lucene.analyzers-smartcn_6.1.0.v20161115-1612 476 RESOLVED org.apache.lucene.core_6.1.0.v20161115-1612 477 RESOLVED org.apache.lucene.misc_6.1.0.v20161115-1612 756 RESOLVED org.apache.lucene.analyzers-common_5.2.1.v20151013-1320 757 RESOLVED org.apache.lucene.core_5.2.1.v20151013-1320 758 RESOLVED org.apache.lucene.queries_5.2.1.v20151013-1320 osgi> p org.apache.lucene.util osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="5.2.1.v20151013-1320"; version:Version="5.2.1"; osgi.wiring.package="org.apache.lucene.util"; uses:="org.apache.lucene.analysis,org.apache.lucene.index,org.apache.lucene.search,org.apache.lucene.store"<org.apache.lucene.core_5.2.1.v20151013-1320 [757]> org.apache.lucene.queries_5.2.1.v20151013-1320 [758] imports org.apache.lucene.analyzers-common_5.2.1.v20151013-1320 [756] imports com.codetrails.codesearch_2.1.0.v20161216-1601-b000 [762] imports osgi.wiring.package; bundle-symbolic-name="org.eclipse.m2e.maven.indexer"; bundle-version:Version="1.8.0.20160921-2001"; provider="m2e"; version:Version="0.0.0"; osgi.wiring.package="org.apache.lucene.util"; mandatory:="provider"<org.eclipse.m2e.maven.indexer_1.8.0.20160921-2001 [602]> org.eclipse.m2e.core.ui_1.8.0.20160921-2002 [591] imports org.eclipse.m2e.core_1.8.0.20160921-2002 [590] imports osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="3.5.0.v20120725-1805"; version:Version="3.5.0"; osgi.wiring.package="org.apache.lucene.util"<org.apache.lucene.core_3.5.0.v20120725-1805 [45]> org.eclipse.recommenders.snipmatch_2.4.6.v20161130-1433 [704] imports org.eclipse.mylyn.tasks.index.core_3.22.0.v20161011-2205 [648] imports org.eclipse.epp.logging.aeri.ide_2.0.3.v20161205-0933 [133] imports org.eclipse.recommenders.types.rcp_2.4.6.v20161130-1433 [707] imports org.eclipse.recommenders.models_2.4.6.v20161130-1433 [697] imports osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="6.1.0.v20161115-1612"; version:Version="6.1.0"; osgi.wiring.package="org.apache.lucene.util"; uses:="org.apache.lucene.analysis,org.apache.lucene.index,org.apache.lucene.search,org.apache.lucene.store"<org.apache.lucene.core_6.1.0.v20161115-1612 [476]> org.apache.lucene.analyzers-smartcn_6.1.0.v20161115-1612 [475] imports org.apache.lucene.misc_6.1.0.v20161115-1612 [477] imports org.eclipse.help.base_4.2.0.v20161208-0830 [557] imports org.apache.lucene.analyzers-common_6.1.0.v20161115-1612 [474] imports [1] <https://marketplace.eclipse.org/content/ctrlflow-code-search>
Do you have an update site for me to install and reproduce? Also, are you providing a pre-built index built with Lucene 5.2.1 ?
(In reply to Sopot Cela from comment #2) > Do you have an update site for me to install and reproduce? Hi Sopot. I got my Oxygen M4 EPP package from straight from Hudson [1]. The third-party plug-in (which I co-develop) using Lucene 5.2.1 is from the Marketplace [2]. Its Lucene 5.2.1 is not yet from taken Orbit (as Orbit didn't have it at the time), but that's on my to-do list. > Also, are you providing a pre-built index built with Lucene 5.2.1 ? No, the third-party plugin doesn't use any pre-built help indexes; all it does is include a copy of Lucene 5.2.1 in its features. Hope that helps. [1] <https://hudson.eclipse.org/packaging/job/oxygen.epp-tycho-build/145/artifact/org.eclipse.epp.packages/archive/> [2] <https://marketplace.eclipse.org/content/ctrlflow-code-search>
With Bug 466829 we now expect plugins to adopt Lucene 6.1.0 (it was also announced on cross-project list). However installing from the market place doesn't work for me for some reason that's why I asked for a p2 update site to install and try to reproduce.
(In reply to Sopot Cela from comment #4) > With Bug 466829 we now expect plugins to adopt Lucene 6.1.0 (it was also > announced on cross-project list). Yes, I know. But third-party plug-ins may still use all kinds of versions. > However installing from the market place doesn't work for me for some reason > that's why I asked for a p2 update site to install and try to reproduce. Ah. Try the one listed at [1]. (FWIW, you don't need to register a trial; just installing is enough to add the Lucene bundles to your Eclipse installation.) [1] <https://www.ctrlflow.com/trial/install/#updateSite>
I installed it from the p2 site you mentioned then opened help and typed something. This did not bring anything out of the ordinary. Can you supply some steps to reproduce?
I've also tried this out and it seems to work for me. I installed Oxygen M4 package for committers, and installed the Ctrlflow Code Search from the update site. Help -> Help Contents, and doing any number of searches seems to work as expected. Even going to the Manual from the Help dropdown from within the Code Search view works for me. I could try playing around with some combination of both but it all seems to work.
(In reply to Sopot Cela from comment #6) > I installed it from the p2 site you mentioned then opened help and typed > something. This did not bring anything out of the ordinary. > > Can you supply some steps to reproduce? (In reply to Roland Grunberg from comment #7) > I've also tried this out and it seems to work for me. I installed Oxygen M4 > package for committers, and installed the Ctrlflow Code Search from the > update site. > > Help -> Help Contents, and doing any number of searches seems to work as > expected. Even going to the Manual from the Help dropdown from within the > Code Search view works for me. I could try playing around with some > combination of both but it all seems to work. I tried to create a fresh Eclipse to exactly retrace my steps: - I installed Neon.1a - Then I installed Ctrlflow Code Search Professional - Then I performed an upgrade (Help > Check for Upgrades) to Oxygen M4 using these update sites [1,2]. But I must have missed something; I cannot reproduce the issue. :-( However, I still have the problematical install sitting on my hard-drive, so if you need me to type additional commands into the Host OSGi console to analyze the writing situation, please say so. [1] <http://download.eclipse.org/technology/epp/packages/oxygen/M4> [2] <http://download.eclipse.org/staging/oxygen>
(In reply to Andreas Sewe from comment #8) > However, I still have the problematical install sitting on my hard-drive, so > if you need me to type additional commands into the Host OSGi console to > analyze the writing situation, please say so. Dug some more myself: The failed cast is from org.apache.lucene.codecs.lucene50.Lucene50PostingsFormat to org.apache.lucene.codecs.PostingsFormat, with PostingsFormat$Holder.<clinit> using org.apache.lucene.util.NamedSPILoader to get a PostingFormat. osgi> p org.apache.lucene.codecs.lucene50 osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="5.2.1.v20151013-1320"; version:Version="5.2.1"; osgi.wiring.package="org.apache.lucene.codecs.lucene50"; uses:="org.apache.lucene.codecs,org.apache.lucene.codecs.compressing,org.apache.lucene.index,org.apache.lucene.store,org.apache.lucene.util"<org.apache.lucene.core_5.2.1.v20151013-1320 [803]> com.codetrails.codesearch_2.0.4.v20161214-1619-b646 [790] imports osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="6.1.0.v20161115-1612"; version:Version="6.1.0"; osgi.wiring.package="org.apache.lucene.codecs.lucene50"; uses:="org.apache.lucene.codecs,org.apache.lucene.codecs.compressing,org.apache.lucene.index,org.apache.lucene.store,org.apache.lucene.util"<org.apache.lucene.core_6.1.0.v20161115-1612 [476]> org.apache.lucene.misc_6.1.0.v20161115-1612 [477] imports org.eclipse.help.base_4.2.0.v20161208-0830 [557] imports osgi> p org.apache.lucene.codecs osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="5.2.1.v20151013-1320"; version:Version="5.2.1"; osgi.wiring.package="org.apache.lucene.codecs"; uses:="org.apache.lucene.analysis,org.apache.lucene.index,org.apache.lucene.store,org.apache.lucene.util"<org.apache.lucene.core_5.2.1.v20151013-1320 [803]> com.codetrails.codesearch_2.0.4.v20161214-1619-b646 [790] imports osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="6.1.0.v20161115-1612"; version:Version="6.1.0"; osgi.wiring.package="org.apache.lucene.codecs"; uses:="org.apache.lucene.analysis,org.apache.lucene.index,org.apache.lucene.store,org.apache.lucene.util"<org.apache.lucene.core_6.1.0.v20161115-1612 [476]> org.apache.lucene.misc_6.1.0.v20161115-1612 [477] imports org.eclipse.help.base_4.2.0.v20161208-0830 [557] imports org.apache.lucene.analyzers-common_6.1.0.v20161115-1612 [474] imports osgi> p org.apache.lucene.util osgi.wiring.package; bundle-symbolic-name="org.eclipse.m2e.maven.indexer"; bundle-version:Version="1.8.0.20160921-2001"; provider="m2e"; version:Version="0.0.0"; osgi.wiring.package="org.apache.lucene.util"; mandatory:="provider"<org.eclipse.m2e.maven.indexer_1.8.0.20160921-2001 [602]> org.eclipse.m2e.core.ui_1.8.0.20160921-2002 [591] imports org.eclipse.m2e.core_1.8.0.20160921-2002 [590] imports osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="5.2.1.v20151013-1320"; version:Version="5.2.1"; osgi.wiring.package="org.apache.lucene.util"; uses:="org.apache.lucene.analysis,org.apache.lucene.index,org.apache.lucene.search,org.apache.lucene.store"<org.apache.lucene.core_5.2.1.v20151013-1320 [803]> org.apache.lucene.analyzers-common_5.2.1.v20151013-1320 [802] imports com.codetrails.codesearch_2.0.4.v20161214-1619-b646 [790] imports org.apache.lucene.queries_5.2.1.v20151013-1320 [804] imports osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="3.5.0.v20120725-1805"; version:Version="3.5.0"; osgi.wiring.package="org.apache.lucene.util"<org.apache.lucene.core_3.5.0.v20120725-1805 [45]> org.eclipse.recommenders.snipmatch_2.4.6.v20161130-1433 [704] imports org.eclipse.mylyn.tasks.index.core_3.22.0.v20161011-2205 [648] imports org.eclipse.epp.logging.aeri.ide_2.0.3.v20161205-0933 [133] imports org.eclipse.recommenders.types.rcp_2.4.6.v20161130-1433 [707] imports org.eclipse.recommenders.models_2.4.6.v20161130-1433 [697] imports osgi.wiring.package; bundle-symbolic-name="org.apache.lucene.core"; bundle-version:Version="6.1.0.v20161115-1612"; version:Version="6.1.0"; osgi.wiring.package="org.apache.lucene.util"; uses:="org.apache.lucene.analysis,org.apache.lucene.index,org.apache.lucene.search,org.apache.lucene.store"<org.apache.lucene.core_6.1.0.v20161115-1612 [476]> org.apache.lucene.analyzers-smartcn_6.1.0.v20161115-1612 [475] imports org.apache.lucene.misc_6.1.0.v20161115-1612 [477] imports org.eclipse.help.base_4.2.0.v20161208-0830 [557] imports org.apache.lucene.analyzers-common_6.1.0.v20161115-1612 [474] imports
I've been looking at the wiring that you've posted but nothing stands out as odd. There's nothing from Lucene 6 that gets wired to Lucen 5 that could explain this. I did have a look through the sources and discovered the same cause you did, Lucene50PostingsFormat being cast to PostingsFormat. There did seem to be a bit of classloader manipulation happening just before so perhaps this is a bug in how Lucene is doing things. Another possibility is that this could be a uses constraint violation that isn't defined in the metadata so it just silently fails like so. com.codetrails.codesearch uses Lucene 5, and I would think it calls the Help System in order to get that help page showing up from your Ctrlflow View. The Help System uses Lucene 6, so that's where the overlap might occur.
Andreas, if you come up with steps to reproduce I will push this on top of my list. Until then I'll resolve this as WORKSFORME.
It seems this is Bug 517935. Does it make this one as a duplicate ?
(In reply to Roland Grunberg from comment #12) > It seems this is Bug 517935. Does it make this one as a duplicate ? Oh, of course. Bug 517935 contains a far better analysis of the root cause (service implementation lock-in in Class.forName); in comment 9 I was still thinking this might be a wiring problem, which it is not. *** This bug has been marked as a duplicate of bug 517935 ***
