Added back. Sorry, bad manual conflict resolution after merge (with svn
merge!).

On Tue, Apr 28, 2015 at 5:19 PM, Robert Muir <[email protected]> wrote:

> Can this be put back? It currently causes a test failure.
>
> -      // LUCENE-6299: check we are in bounds
> -      if (totalDocs > IndexWriter.getActualMaxDocs()) {
> -        throw new CorruptIndexException("Too many documents: an index
> cannot exceed " + IndexWriter.getActualMaxDocs() + " but readers have
> total maxDoc=" + totalDocs, input);
> -      }
>
> On Tue, Apr 28, 2015 at 7:46 PM,  <[email protected]> wrote:
> > Author: rjernst
> > Date: Tue Apr 28 23:46:20 2015
> > New Revision: 1676648
> >
> > URL: http://svn.apache.org/r1676648
> > Log:
> > LUCENE-6213: Add useful exception message when commit contains segments
> from legacy codecs (forward port from branch_5x)
> >
> > Added:
> >
>  
> lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.5x-with-4x-segments-cfs.zip
>  (with props)
> >
>  
> lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.5x-with-4x-segments-nocfs.zip
>  (with props)
> > Modified:
> >     lucene/dev/trunk/   (props changed)
> >     lucene/dev/trunk/lucene/CHANGES.txt
> >
>  
> lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java
> >
>  
> lucene/dev/trunk/lucene/core/src/java/org/apache/lucene/index/SegmentInfos.java
> >
> > Modified: lucene/dev/trunk/lucene/CHANGES.txt
> > URL:
> http://svn.apache.org/viewvc/lucene/dev/trunk/lucene/CHANGES.txt?rev=1676648&r1=1676647&r2=1676648&view=diff
> >
> ==============================================================================
> > --- lucene/dev/trunk/lucene/CHANGES.txt (original)
> > +++ lucene/dev/trunk/lucene/CHANGES.txt Tue Apr 28 23:46:20 2015
> > @@ -928,6 +928,9 @@ Other
> >
> >  * LUCENE-5915: Remove Pulsing postings format. (Robert Muir)
> >
> > +* LUCENE-6213: Add useful exception message when commit contains
> segments from legacy codecs.
> > +  (Ryan Ernst)
> > +
> >  ======================= Lucene 4.10.4 ======================
> >
> >  Bug fixes
> >
> > Modified:
> lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java
> > URL:
> http://svn.apache.org/viewvc/lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java?rev=1676648&r1=1676647&r2=1676648&view=diff
> >
> ==============================================================================
> > ---
> lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java
> (original)
> > +++
> lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java
> Tue Apr 28 23:46:20 2015
> > @@ -321,7 +321,9 @@ public class TestBackwardsCompatibility
> >        "4.10.3-cfs",
> >        "4.10.3-nocfs",
> >        "4.10.4-cfs",
> > -      "4.10.4-nocfs"
> > +      "4.10.4-nocfs",
> > +      "5x-with-4x-segments-cfs",
> > +      "5x-with-4x-segments-nocfs"
> >    };
> >
> >    final static String[] oldSingleSegmentNames = {
> > @@ -845,7 +847,7 @@ public class TestBackwardsCompatibility
> >      mp.setMaxCFSSegmentSizeMB(Double.POSITIVE_INFINITY);
> >      // TODO: remove randomness
> >      IndexWriterConfig conf = new IndexWriterConfig(new
> MockAnalyzer(random()))
> > -      .setMaxBufferedDocs(10).setMergePolicy(mp);
> > +      .setMaxBufferedDocs(10).setMergePolicy(NoMergePolicy.INSTANCE);
> >      IndexWriter writer = new IndexWriter(dir, conf);
> >
> >      for(int i=0;i<35;i++) {
> > @@ -863,7 +865,7 @@ public class TestBackwardsCompatibility
> >        mp.setNoCFSRatio(doCFS ? 1.0 : 0.0);
> >        // TODO: remove randomness
> >        conf = new IndexWriterConfig(new MockAnalyzer(random()))
> > -        .setMaxBufferedDocs(10).setMergePolicy(mp);
> > +        .setMaxBufferedDocs(10).setMergePolicy(NoMergePolicy.INSTANCE);
> >        writer = new IndexWriter(dir, conf);
> >        addNoProxDoc(writer);
> >        writer.close();
> >
> > Added:
> lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.5x-with-4x-segments-cfs.zip
> > URL:
> http://svn.apache.org/viewvc/lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.5x-with-4x-segments-cfs.zip?rev=1676648&view=auto
> >
> ==============================================================================
> > Binary file - no diff available.
> >
> > Added:
> lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.5x-with-4x-segments-nocfs.zip
> > URL:
> http://svn.apache.org/viewvc/lucene/dev/trunk/lucene/backward-codecs/src/test/org/apache/lucene/index/unsupported.5x-with-4x-segments-nocfs.zip?rev=1676648&view=auto
> >
> ==============================================================================
> > Binary file - no diff available.
> >
> > Modified:
> lucene/dev/trunk/lucene/core/src/java/org/apache/lucene/index/SegmentInfos.java
> > URL:
> http://svn.apache.org/viewvc/lucene/dev/trunk/lucene/core/src/java/org/apache/lucene/index/SegmentInfos.java?rev=1676648&r1=1676647&r2=1676648&view=diff
> >
> ==============================================================================
> > ---
> lucene/dev/trunk/lucene/core/src/java/org/apache/lucene/index/SegmentInfos.java
> (original)
> > +++
> lucene/dev/trunk/lucene/core/src/java/org/apache/lucene/index/SegmentInfos.java
> Tue Apr 28 23:46:20 2015
> > @@ -37,6 +37,7 @@ import org.apache.lucene.codecs.DocValue
> >  import org.apache.lucene.codecs.FieldInfosFormat;
> >  import org.apache.lucene.codecs.LiveDocsFormat;
> >  import org.apache.lucene.store.ChecksumIndexInput;
> > +import org.apache.lucene.store.DataInput;
> >  import org.apache.lucene.store.DataOutput;
> >  import org.apache.lucene.store.Directory;
> >  import org.apache.lucene.store.IOContext;
> > @@ -276,7 +277,7 @@ public final class SegmentInfos implemen
> >        byte id[] = new byte[StringHelper.ID_LENGTH];
> >        input.readBytes(id, 0, id.length);
> >        CodecUtil.checkIndexHeaderSuffix(input, Long.toString(generation,
> Character.MAX_RADIX));
> > -
> > +
> >        SegmentInfos infos = new SegmentInfos();
> >        infos.id = id;
> >        infos.generation = generation;
> > @@ -295,10 +296,12 @@ public final class SegmentInfos implemen
> >          if (hasID == 1) {
> >            segmentID = new byte[StringHelper.ID_LENGTH];
> >            input.readBytes(segmentID, 0, segmentID.length);
> > +        } else if (hasID == 0) {
> > +          throw new IndexFormatTooOldException(input, "Segment is from
> Lucene 4.x");
> >          } else {
> >            throw new CorruptIndexException("invalid hasID byte, got: " +
> hasID, input);
> >          }
> > -        Codec codec = Codec.forName(input.readString());
> > +        Codec codec = readCodec(input);
> >          SegmentInfo info = codec.segmentInfoFormat().read(directory,
> segName, segmentID, IOContext.READ);
> >          info.setCodec(codec);
> >          totalDocs += info.maxDoc();
> > @@ -341,15 +344,33 @@ public final class SegmentInfos implemen
> >
> >        CodecUtil.checkFooter(input);
> >
> > -      // LUCENE-6299: check we are in bounds
> > -      if (totalDocs > IndexWriter.getActualMaxDocs()) {
> > -        throw new CorruptIndexException("Too many documents: an index
> cannot exceed " + IndexWriter.getActualMaxDocs() + " but readers have total
> maxDoc=" + totalDocs, input);
> > -      }
> > -
> >        return infos;
> >      }
> >    }
> >
> > +  private static final List<String> unsupportedCodecs = Arrays.asList(
> > +      "Lucene3x", "Lucene40", "Lucene41", "Lucene42", "Lucene45",
> "Lucene46", "Lucene49", "Lucene410"
> > +  );
> > +
> > +  private static Codec readCodec(DataInput input) throws IOException {
> > +    final String name = input.readString();
> > +    try {
> > +      return Codec.forName(name);
> > +    } catch (IllegalArgumentException e) {
> > +      // give better error messages if we can, first check if this is a
> legacy codec
> > +      if (unsupportedCodecs.contains(name)) {
> > +        IOException newExc = new IndexFormatTooOldException(input,
> "Codec '" + name + "' is too old");
> > +        newExc.initCause(e);
> > +        throw newExc;
> > +      }
> > +      // or maybe it's an old default codec that moved
> > +      if (name.startsWith("Lucene")) {
> > +        throw new IllegalArgumentException("Could not load codec '" +
> name + "'.  Did you forget to add lucene-backward-codecs.jar?", e);
> > +      }
> > +      throw e;
> > +    }
> > +  }
> > +
> >    /** Find the latest commit ({@code segments_N file}) and
> >     *  load all {@link SegmentCommitInfo}s. */
> >    public static final SegmentInfos readLatestCommit(Directory
> directory) throws IOException {
> >
> >
>
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