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DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
DROP TABLE IF EXISTS t3;
SET GLOBAL ROCKSDB_PAUSE_BACKGROUND_WORK=1;
create table t1 (a int) engine=rocksdb;
drop table t1;
select * from INFORMATION_SCHEMA.ROCKSDB_GLOBAL_INFO where type<>'DDL_DROP_INDEX_ONGOING';
TYPE NAME VALUE
MAX_INDEX_ID MAX_INDEX_ID max_index_id
CF_FLAGS 0 default [0]
CF_FLAGS 1 __system__ [0]
select count(*) from INFORMATION_SCHEMA.ROCKSDB_GLOBAL_INFO where type<>'DDL_DROP_INDEX_ONGOING';
count(*)
3
SET GLOBAL ROCKSDB_PAUSE_BACKGROUND_WORK=0;
select VALUE into @keysIn from INFORMATION_SCHEMA.ROCKSDB_COMPACTION_STATS where CF_NAME = 'default' and LEVEL = 'Sum' and TYPE = 'KeyIn';
CREATE TABLE t1 (i1 INT, i2 INT, PRIMARY KEY (i1)) ENGINE = ROCKSDB;
INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3);
set global rocksdb_force_flush_memtable_now = true;
select * from INFORMATION_SCHEMA.ROCKSDB_GLOBAL_INFO;
TYPE NAME VALUE
MAX_INDEX_ID MAX_INDEX_ID max_index_id
CF_FLAGS 0 default [0]
CF_FLAGS 1 __system__ [0]
select count(*) from INFORMATION_SCHEMA.ROCKSDB_GLOBAL_INFO;
count(*)
3
set global rocksdb_force_flush_memtable_now = true;
set global rocksdb_compact_cf='default';
select case when VALUE-@keysIn >= 3 then 'true' else 'false' end from INFORMATION_SCHEMA.ROCKSDB_COMPACTION_STATS where CF_NAME = 'default' and LEVEL = 'Sum' and TYPE = 'KeyIn';
case when VALUE-@keysIn >= 3 then 'true' else 'false' end
true
CREATE INDEX tindex1 on t1 (i1);
CREATE INDEX tindex2 on t1 (i2);
select * from INFORMATION_SCHEMA.ROCKSDB_GLOBAL_INFO where TYPE = 'CF_FLAGS';
TYPE NAME VALUE
CF_FLAGS 0 default [0]
CF_FLAGS 1 __system__ [0]
CREATE TABLE t2 (
a int,
b int,
c int,
d int,
PRIMARY KEY (a) COMMENT "cf_a",
KEY (b) COMMENT "cf_b",
KEY (c) COMMENT "cf_c",
KEY (d) COMMENT "rev:cf_d") ENGINE=ROCKSDB;
select * from INFORMATION_SCHEMA.ROCKSDB_GLOBAL_INFO where TYPE = 'CF_FLAGS';
TYPE NAME VALUE
CF_FLAGS 0 default [0]
CF_FLAGS 1 __system__ [0]
CF_FLAGS 2 cf_a [0]
CF_FLAGS 3 cf_b [0]
CF_FLAGS 4 cf_c [0]
CF_FLAGS 5 rev:cf_d [1]
CREATE TABLE t3 (a INT, PRIMARY KEY (a)) ENGINE=ROCKSDB;
insert into t3 (a) values (1), (2), (3);
SET @ORIG_ROCKSDB_PAUSE_BACKGROUND_WORK = @@GLOBAL.ROCKSDB_PAUSE_BACKGROUND_WORK;
SHOW GLOBAL VARIABLES LIKE 'ROCKSDB_PAUSE_BACKGROUND_WORK';
Variable_name Value
rocksdb_pause_background_work OFF
SET GLOBAL ROCKSDB_PAUSE_BACKGROUND_WORK=1;
SHOW GLOBAL VARIABLES LIKE 'ROCKSDB_PAUSE_BACKGROUND_WORK';
Variable_name Value
rocksdb_pause_background_work ON
SET GLOBAL ROCKSDB_PAUSE_BACKGROUND_WORK=1;
SHOW GLOBAL VARIABLES LIKE 'ROCKSDB_PAUSE_BACKGROUND_WORK';
Variable_name Value
rocksdb_pause_background_work ON
DROP TABLE t3;
cf_id:0,index_id:264
SET GLOBAL ROCKSDB_PAUSE_BACKGROUND_WORK=0;
SHOW GLOBAL VARIABLES LIKE 'ROCKSDB_PAUSE_BACKGROUND_WORK';
Variable_name Value
rocksdb_pause_background_work OFF
next line shouldn't cause assertion to fail
SET GLOBAL ROCKSDB_PAUSE_BACKGROUND_WORK=0;
SHOW GLOBAL VARIABLES LIKE 'ROCKSDB_PAUSE_BACKGROUND_WORK';
Variable_name Value
rocksdb_pause_background_work OFF
SET GLOBAL ROCKSDB_PAUSE_BACKGROUND_WORK = @ORIG_ROCKSDB_PAUSE_BACKGROUND_WORK;
DROP TABLE t1;
DROP TABLE t2;
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