Commit 910d1e91 authored by Julien Muchembled's avatar Julien Muchembled

storage: commit from time to time when truncating

This is all the more important for RocksDB that it wants to keep all
transaction work in RAM.

Once we had to truncate 40% of a 1TB MyRocks DB with 24 partitions,
4 being processed in parallel. Even when committing between partitions,
MariaDB used up to 200 GB. Without the commit, 1TB RAM would not have
been enough.
parent d14de83e
......@@ -14,7 +14,7 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os, errno, socket, struct, sys, threading
import os, errno, socket, struct, sys, threading, time
from collections import defaultdict
from contextlib import contextmanager
from copy import copy
......@@ -853,7 +853,12 @@ class DatabaseManager(object):
assert tid, tid
cell_list = []
my_nid = self.getUUID()
commit = 0
for partition, state in self.iterAssignedCells():
if commit < time.time():
if commit:
self.commit()
commit = time.time() + 10
if state > tid:
cell_list.append((partition, my_nid, tid))
self._deleteRange(partition, tid)
......
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