2 commits

Author	SHA1	Message	Date
Yi Wu	0552029b5c	Blob DB: not writing sequence number as blob record footer ... Summary: Previously each time we write a blob we write blog_record_header + key + value + blob_record_footer to blob log. The footer only contains a sequence and a crc for the sequence number. The sequence number was used in garbage collection to verify the value is recent. After #2703 we moved to use optimistic transaction and no longer use sequence number from the footer. Remove the footer altogether. There's another usage of sequence number and we are keeping it: Each blob log file keep track of sequence number range of keys in it, and use it to check if it is reference by a snapshot, before being deleted. Closes https://github.com/facebook/rocksdb/pull/3005 Differential Revision: D6057585 Pulled By: yiwu-arbug fbshipit-source-id: d6da53c457a316e9723f359a1b47facfc3ffe090	2017-10-17 12:13:08 -07:00
Yi Wu	10ba50e9eb	Blob DB: Move BlobFile definition to a separate file ... Summary: simply move BlobFile definition from blob_db_impl.h to blob_file.h. Closes https://github.com/facebook/rocksdb/pull/3002 Differential Revision: D6050143 Pulled By: yiwu-arbug fbshipit-source-id: a8fb6e094fe39bdeace6279569834bc65aa64a34	2017-10-13 14:42:26 -07:00