On Tue, 4 Jun 2019, Andi Vajda wrote:
I wasn't aware of this jar file ;-)
Did you try adding it in the Makefile and seeing if that fixes the problem ?
It looks like both lucene-codecs.jar and lucene-backward-codecs.jar are
missing...
Andi..
Andi..
On Jun 4, 2019, at 11:30, David Allouche <da...@allouche.net> wrote:
Hello,
I use pylucene, and I am upgrading from 6.5.0 to 7.7.1.
Opening my old index using the new pylucene, I get
Traceback (most recent call last):
...
File "/home/user/jobaffinity/lib/luceneindex.py", line 58, in
create_lucene_index_maybe
writer = IndexWriter(directory, config)
lucene.JavaError: <super: <class 'JavaError'>, <JavaError object>>
Java stacktrace:
java.lang.IllegalArgumentException: Could not load codec 'Lucene62'. Did you
forget to add lucene-backward-codecs.jar?
at org.apache.lucene.index.SegmentInfos.readCodec(SegmentInfos.java:428)
at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:360)
at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:291)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:845)
Caused by: java.lang.IllegalArgumentException: An SPI class of type
org.apache.lucene.codecs.Codec with name 'Lucene62' does not exist. You need
to add the corresponding JAR file supporting this SPI to your classpath. The
current classpath supports the following names: [Lucene70]
at org.apache.lucene.util.NamedSPILoader.lookup(NamedSPILoader.java:116)
at org.apache.lucene.codecs.Codec.forName(Codec.java:116)
at org.apache.lucene.index.SegmentInfos.readCodec(SegmentInfos.java:424)
... 3 more
I am really not familiar with the Java side of things. With some help from the
web, I found out where to download the jars.
I presume I need
http://central.maven.org/maven2/org/apache/lucene/lucene-backward-codecs/7.7.1/lucene-backward-codecs-7.7.1.jar
But then, I am quite clueless about what to do. I tried dumping the jar right
next to lucene-core-7.7.1.jar, in my
$(VENV)/lib/python2.7/site-packages/lucene, but that does not seem to help.
I have a large-ish index with about 22M entries, used in a public-facing
service, so I very much like to avoid rebuilding the index every time I upgrade
pylucene.
I could reverse-engineer this script:
https://github.com/cominvent/solr-tools/blob/master/upgradeindex/upgradeindex.sh
But that would require me to put the service down while running the migration.
How can I package the lucene-backwards-codecs in pylucene?
