--source suite/xengine/include/have_xengine.inc

--disable_warnings
DROP TABLE IF EXISTS test.t1_bugfix_26763953;
--enable_warnings

create table test.t1_bugfix_26763953(
        c1 int primary key,
        c2 int
) engine=xengine;

#refresh statistics quickly
set information_schema_stats_expiry = 1;

#insert data
insert into test.t1_bugfix_26763953 values (1, 1), (3, 3);

#flush the data to disk,generate one extent(2M), the extent is in level0 now
set global xengine_force_flush_memtable_now = on;
--exec sleep 2

#make the statistics update to information_schema.tables
analyze table test.t1_bugfix_26763953;
--exec sleep 3

#select the statistics
select TABLE_SCHEMA, TABLE_NAME, ENGINE, VERSION, ROW_FORMAT, TABLE_ROWS, AVG_ROW_LENGTH, DATA_LENGTH from information_schema.tables where table_schema='test' and table_name='t1_bugfix_26763953';

#compaction the data to levle2, the extent is reuse to level2
set global xengine_compact_cf = 55834574848;
--exec sleep 10
analyze table test.t1_bugfix_26763953;
--exec sleep 2

#select the statistics again, data not change and the extent is reused, so the statistics should't change too
#in bug(https://work.aone.alibaba-inc.com/issue/26763953), the statistics will increase
select TABLE_SCHEMA, TABLE_NAME, ENGINE, VERSION, ROW_FORMAT, TABLE_ROWS, AVG_ROW_LENGTH, DATA_LENGTH from information_schema.tables where table_schema='test' and table_name='t1_bugfix_26763953';

#restart the server, check the stats
--source include/restart_mysqld.inc
--exec sleep 5

#refresh statistics quickly
set information_schema_stats_expiry = 1;
analyze table test.t1_bugfix_26763953;
--exec sleep 2

#select the statistics again
select TABLE_SCHEMA, TABLE_NAME, ENGINE, VERSION, ROW_FORMAT, TABLE_ROWS, AVG_ROW_LENGTH, DATA_LENGTH from information_schema.tables where table_schema='test' and table_name='t1_bugfix_26763953';

#insert data, and flush to disk,generate another extent(2M)
insert into test.t1_bugfix_26763953 values (2, 2);
set global xengine_force_flush_memtable_now = on;
--exec sleep 2
analyze table test.t1_bugfix_26763953;
--exec sleep 2

#select statistics again, the data_length should add 2M
select TABLE_SCHEMA, TABLE_NAME, ENGINE, VERSION, ROW_FORMAT, TABLE_ROWS, AVG_ROW_LENGTH, DATA_LENGTH from information_schema.tables where table_schema='test' and table_name='t1_bugfix_26763953';

#compaction the data to levle2, and the two extent merge to one
set global xengine_compact_cf = 55834574848;
--exec sleep 5
#level2 major self compaction
set global xengine_compact_cf = 25769803776;
--exec sleep 5
analyze table test.t1_bugfix_26763953;
--exec sleep 2

#select statistics again, the dara_length should decrease to 2M
select TABLE_SCHEMA, TABLE_NAME, ENGINE, VERSION, ROW_FORMAT, TABLE_ROWS, AVG_ROW_LENGTH, DATA_LENGTH from information_schema.tables where table_schema='test' and table_name='t1_bugfix_26763953';


DROP TABLE test.t1_bugfix_26763953;