zhangstar333 commented on code in PR #67650:
URL: https://github.com/apache/doris/pull/67650#discussion_r3975194033


##########
be/src/common/config.cpp:
##########
@@ -1206,6 +1206,26 @@ DEFINE_Validator(variant_max_json_key_length,
 DEFINE_Validator(variant_storage_parse_mode,
                  [](const int config) -> bool { return config >= 0 && config 
<= 2; });
 
+// Lance uses one BE-wide session so metadata/index caches and the optional 
Foyer data-file cache
+// can be shared by all Lance dataset readers.
+DEFINE_Int64(lance_index_cache_size_bytes, "10737418240");   // 10 GiB
+DEFINE_Int64(lance_metadata_cache_size_bytes, "1073741824"); // 1GB
+DEFINE_Bool(enable_lance_data_cache, "true");

Review Comment:
   fixed in lance-c



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