michaelsembwever commented on code in PR #2943:
URL: https://github.com/apache/cassandra/pull/2943#discussion_r1411249853
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src/java/org/apache/cassandra/index/sai/disk/format/IndexComponent.java:
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@@ -68,14 +68,19 @@ public enum IndexComponent
// per-sstable components
/**
- * Partition key token value for rows including row tombstone and static
row. (access key is rowId)
+ * An on-disk block packed index mapping rowIds to token values.
*/
- TOKEN_VALUES("TokenValues"),
+ ROW_TO_TOKEN("RowToToken"),
/**
- * An on-disk block packed index containing the starting and ending rowIds
for each partition.
+ * An on-disk block packed index mapping rowIds to partitionIds.
*/
- PARTITION_SIZES("PartitionSizes"),
+ ROW_TO_PARTITION("RowToPartition"),
+
+ /**
+ * An on-disk block packed index mapping partitionIds to the number of
rows for the partition.
+ */
+ PARTITION_TO_SIZE("PartitionToSize"),
Review Comment:
what about when reading index from 5.0-alphaX and this doesn't exist ?
(not sure how BlockPackedReader works…)
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