将 Solr 索引从 6 升级到 8

Question

我有一个多年前创建的核心，运行正确地从 Solr 6.x。

我已将 Solr 升级到 7.7.3。我启动了 IndexUpgrade 脚本：

/opt/solr/server/solr-webapp/webapp/WEB-INF/lib$ sudo java -cp lucene-core-7.7.3.jar:lucene-backward-codecs-7.7.3.jar org.apache.lucene.index.IndexUpgrader /var/solr/data/hms/data/index/

它默默地运行，所以我的假设是它正确地做了它必须做的事情。

然后我升级到 Solr 8.7.0，并启动了脚本：

/opt/solr/server/solr-webapp/webapp/WEB-INF/lib$ sudo java -cp lucene-core-8.7.0.jar:lucene-backward-codecs-8.7.0.jar org.apache.lucene.index.IndexUpgrader /var/solr/data/hms/data/index/

最后一个代码退出并出现此错误：

Exception in thread "main" org.apache.lucene.index.IndexFormatTooOldException: Format version is not supported (resource BufferedChecksumIndexInput(MMapIndexInput(path="/var/solr/data/hms/data/index/segments_asky"))): This index was initially created with Lucene 6.x while the current version is 8.7.0 and Lucene only supports reading the current and previous major versions.. This version of Lucene only supports indexes created with release 7.0 and later.
    at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:322)
    at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:291)
    at org.apache.lucene.index.SegmentInfos.doBody(SegmentInfos.java:461)
    at org.apache.lucene.index.SegmentInfos.doBody(SegmentInfos.java:458)
    at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:720)
    at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:672)
    at org.apache.lucene.index.SegmentInfos.readLatestCommit(SegmentInfos.java:463)
    at org.apache.lucene.index.DirectoryReader.listCommits(DirectoryReader.java:260)
    at org.apache.lucene.index.IndexUpgrader.upgrade(IndexUpgrader.java:158)
    at org.apache.lucene.index.IndexUpgrader.main(IndexUpgrader.java:78)
    Suppressed: org.apache.lucene.index.CorruptIndexException: checksum passed (58082b0a). possibly transient resource issue, or a Lucene or JVM bug (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/var/solr/data/hms/data/index/segments_asky")))
        at org.apache.lucene.codecs.CodecUtil.checkFooter(CodecUtil.java:466)
        at org.apache.lucene.index.SegmentInfos.readCommit(SegmentInfos.java:434)
        ... 9 more

这是为什么？我做事不正确吗，即先将索引从 6 升级到 7，然后再从 7 升级到 8？如何让我的索引与 Solr 8 一起使用？

Answer 1

我重新创建了核心和索引，因为 Solr 似乎不能很好地处理过去创建的多个主要版本的索引。

将 Solr 索引从 6 升级到 8

Upgrading Solr index from 6 to 8

java

lucene

solr