LevelDB Storage Engine MS2 (MDEV-4201)

[MDEV-4321] LevelDB: Valgrind "blocks are definitely lost" warnings on creating a table Created: 2013-03-23  Updated: 2013-03-26  Resolved: 2013-03-26

Status: Closed
Project: MariaDB Server
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Technical task Priority: Minor
Reporter: Elena Stepanova Assignee: Sergei Petrunia
Resolution: Fixed Votes: 0
Labels: leveldb

Issue Links:
Relates

 Description   

==25696== 40 bytes in 1 blocks are definitely lost in loss record 88 of 209
==25696==    at 0x4C2B1C7: operator new(unsigned long) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==25696==    by 0xD492B6: ha_leveldb::create_key_defs(TABLE*, char const*, unsigned int) (ha_leveldb.cc:893)
==25696==    by 0xD49648: ha_leveldb::create(char const*, TABLE*, st_ha_create_information*) (ha_leveldb.cc:982)
==25696==    by 0x61E493: handler::ha_create(char const*, TABLE*, st_ha_create_information*) (handler.cc:4407)
==25696==    by 0x61ED27: ha_create_table(THD*, char const*, char const*, char const*, st_ha_create_information*, bool, bool) (handler.cc:4645)
==25696==    by 0x86E5D1: rea_create_table(THD*, char const*, char const*, char const*, st_ha_create_information*, List<Create_field>&, unsigned int, st_key*, handler*, bool) (unireg.cc:527)
==25696==    by 0x8091E8: create_table_impl(THD*, char const*, char const*, char const*, st_ha_create_information*, Alter_info*, bool, unsigned int, bool, bool*, st_key**, unsigned int*) (sql_table.cc:4791)
==25696==    by 0x809713: mysql_create_table_no_lock(THD*, char const*, char const*, st_ha_create_information*, Alter_info*, unsigned int, bool*) (sql_table.cc:4901)
==25696==    by 0x80981C: mysql_create_table(THD*, TABLE_LIST*, st_ha_create_information*, Alter_info*) (sql_table.cc:4947)
==25696==    by 0x7A1A79: mysql_execute_command(THD*) (sql_parse.cc:2999)
==25696==    by 0x7AA16A: mysql_parse(THD*, char*, unsigned int, Parser_state*) (sql_parse.cc:6149)
==25696==    by 0x79DE91: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1334)
==25696== 

To reproduce, it's enough to start server with valgrind, e.g.

/usr/bin/valgrind.bin --suppressions=/data/bzr/mysql-5.6-leveldb/mysql-test/valgrind.supp --tool=memcheck --leak-check=yes --show-reachable=yes mysqld ...

then run

create table t1 (pk int primary key) engine=LevelDB;

and shut down the server.

MTR test case:

CREATE TABLE t1 (pk INT PRIMARY KEY) ENGINE=LevelDB;
DROP TABLE t1;

revision-id: psergey@askmonty.org-20130322111245-43wqvaouclxso5zo
revno: 4807
branch-nick: mysql-5.6-leveldb

(modified not to build unittest and built with cmake . -DCMAKE_BUILD_TYPE=Debug && make -j3)


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