tree 5641a34e095472bf915bd38529cd63142e714697
parent e7b44ca5b2ce93489ebadcdcf757d66ab6adf0d3
author Jatin Lodhia <jlodhia@google.com> 1438118276 -0700
committer Jatin Lodhia <jlodhia@google.com> 1438118281 -0700

Add expected database schema version to RPCs.
1) Client side
- Minimum changes to client API. Database version
  is piped around internally for use in RPC.
- Schema version added to BatchOptions during
  creation of batch.
- RPC API change do pass a int64 schema version number
  as param for all read write methods of database, table
  and row.
2) Server side
- schema version number is stored in databaseData object
- schema version is read from db for each write operation
  that needs to check version. In future leveldb is expected
  to have internal caching layer making the read op
  inexpensive.

MultiPart: 1/2
Change-Id: Ic7443e9087cf51fb96cb35b30918fa24665dbcbc