jpountz commented on a change in pull request #1434: LUCENE-9324: Add an ID to
SegmentCommitInfo
URL: https://github.com/apache/lucene-solr/pull/1434#discussion_r409844046
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File path: lucene/core/src/java/org/apache/lucene/index/SegmentInfos.java
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@@ -374,7 +376,15 @@ public static final SegmentInfos readCommit(Directory
directory, ChecksumIndexIn
if (softDelCount + delCount > info.maxDoc()) {
throw new CorruptIndexException("invalid deletion count: " +
softDelCount + delCount + " vs maxDoc=" + info.maxDoc(), input);
}
- SegmentCommitInfo siPerCommit = new SegmentCommitInfo(info, delCount,
softDelCount, delGen, fieldInfosGen, dvGen);
+ final byte[] sciId;
+ if (format > VERSION_74) {
+ sciId = new byte[StringHelper.ID_LENGTH];
+ input.readBytes(sciId, 0, sciId.length);
+ } else {
+ sciId = infos.id;
+ // NOCOMMIT can we do this? it would at least give us consistent BWC
but we can't identify the same SCI in different commits
Review comment:
I don't understand the idea of stealing the parent ID, wouldn't it cause
Lucene to consider commits equal when they are not, which would be a much worse
problem than considering commits different when they are equal?
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