jtuglu1 commented on code in PR #18515:
URL: https://github.com/apache/druid/pull/18515#discussion_r2377901063
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server/src/main/java/org/apache/druid/metadata/SQLMetadataConnector.java:
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@@ -1106,43 +1168,51 @@ public ResultSet getIndexInfo(DatabaseMetaData
databaseMetaData, String tableNam
}
/**
- * create index on the table with retry if not already exist, to be called
after createTable
+ * Create index on the table with retry if not already exist, to be called
after createTable
+ * Format of index name is either specified via legacy {@param
legacyIndexNameFormat} or {@code generateSHABasedIndexIdentifier}.
*
* @param tableName Name of the table to create index on
- * @param indexName case-insensitive string index name, it helps to
check the existing index on table
- * @param indexCols List of columns to be indexed on
+ * @param legacyIndexNameFormat Template to create index ID (nullable for
forwards compatibility with SHA-based indices)
Review Comment:
> How does making this nullable help with forwards compat?
I think that's an outdated comment. This was before the config flag was
re-added.
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