acelyc111 commented on code in PR #2251:
URL:
https://github.com/apache/incubator-pegasus/pull/2251#discussion_r2112239193
##########
src/server/pegasus_server_impl_init.cpp:
##########
@@ -588,6 +588,43 @@ DSN_DEFINE_uint64(pegasus.server,
600, // 600 is the default value in RocksDB.
"If not zero, dump rocksdb.stats to RocksDB every
stats_persist_period_sec");
+/* Rocksdb blobdb for Key-value separation.
+ * For more infomation, see: https://github.com/facebook/rocksdb/wiki/BlobDB */
+DSN_DEFINE_bool(pegasus.server,
+ rocksdb_enable_blob_files,
+ false,
+ "switch of the key-value separation function");
Review Comment:
Use the description in rocksdb, i.e. "When set, large values (blobs) are
written to separate blob files, and only pointers to them are stored in SST
files. This can reduce write amplification for large-value use cases at the
cost of introducing a level of indirection for reads."
It could provide more information, avoid missunderstanding or ambiguity.
Other options are the same.
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