mysql: drop support for TokuDB

README.rst

@@ -16,7 +16,7 @@ A NEO cluster is composed of the following types of nodes:
 
   Stores data, preserving history. All available storage nodes are in use
   simultaneously. This offers redundancy and data distribution.
-  Available backends: MySQL (InnoDB, RocksDB or TokuDB), SQLite
+  Available backends: MySQL (InnoDB or RocksDB), SQLite
 
 - "admin" nodes (mandatory for startup, optional after)
 

neo.conf

@@ -60,7 +60,7 @@ partitions: 12
 #     Database must be created manually.
 #   - SQLite: path
 # engine: Optional parameter for MySQL.
-#         Can be InnoDB (default), RocksDB or TokuDB.
+#         Can be InnoDB (default) or RocksDB.
 
 # Admin node
 [admin]

neo/storage/database/mysql.py

@@ -115,7 +115,7 @@ class MySQLDatabaseManager(DatabaseManager):
     """This class manages a database on MySQL."""
 
     VERSION = 3
-    ENGINES = "InnoDB", "RocksDB", "TokuDB"
+    ENGINES = "InnoDB", "RocksDB"
     _engine = ENGINES[0] # default engine
 
     _use_partition = False
@@ -360,9 +360,6 @@ class MySQLDatabaseManager(DatabaseManager):
              ) ENGINE={}""".format(cf('obj_pk', True),
                  cf('append_meta'), cf('append_meta'), p)
 
-        if engine == "TokuDB":
-            engine += " compression='tokudb_uncompressed'"
-
         # The table "data" stores object data.
         # We'd like to have partial index on 'hash' column (e.g. hash(4))
         # but 'UNIQUE' constraint would not work as expected.

neo/tests/storage/testStorageMySQL.py

@@ -19,7 +19,7 @@ from contextlib import closing, contextmanager
 from ..mock import Mock
 from neo.lib.protocol import ZERO_OID
 from neo.lib.util import p64
-from .. import DB_PREFIX, DB_USER, Patch, setupMySQL
+from .. import DB_PREFIX, DB_USER, Patch
 from .testStorageDBTests import StorageDBTests
 from neo.storage.database import DatabaseFailure
 from neo.storage.database.mysql import (MySQLDatabaseManager,
@@ -121,12 +121,6 @@ class StorageMySQLdbRocksDBTests(StorageMySQLdbTests):
     engine = "RocksDB"
     test_lockDatabase = None
 
-
-class StorageMySQLdbTokuDBTests(StorageMySQLdbTests):
-
-    engine = "TokuDB"
-    test_lockDatabase = None
-
 del StorageDBTests
 
 if __name__ == "__main__":