Details
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Bug
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Status: Closed (View Workflow)
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Blocker
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Resolution: Cannot Reproduce
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1.1.1
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None
Description
Create a table on Master.
MySQL [test]> create table t3 (a int, b int); |
Query OK, 0 rows affected (0.14 sec) |
On ColumnStore side, create corresponding table
MariaDB [test]> CREATE TABLE test.t3 (a int, b int) ENGINE=ColumnStore; |
Query OK, 0 rows affected (1.15 sec) |
|
|
MariaDB [test]> select * from t3;
|
Empty set (0.11 sec) |
Now back on master insert one row
MySQL [test]> insert into t3 values (0, 1); |
Query OK, 1 row affected (0.04 sec) |
Start mxs_adapter as following
./mxs_adapter -h 172.21.0.7 -P 4001 -u cdcuser -p cdc -r 5 -n test t3 |
2 rows and 0 transactions inserted in 5.19347 seconds. GTID = 0-1-44 |
Check the inserted rows on ColumnStore
MariaDB [test]> select * from t3;
|
+------+---------+
|
| a | b |
|
+------+---------+
|
| 0 | 1 | |
| 0 | 4673075 | |
+------+---------+
|
2 rows in set (0.02 sec) |
Note the ghost entry with b = 4673075
Further adding new rows on master side, results in duplicates and ghost entries
on columnstore side
MySQL [test]> insert into t3 values (0, 2); |
Query OK, 1 row affected (0.05 sec) |
|
|
MySQL [test]> insert into t3 values (0, 3); |
Query OK, 1 row affected (0.02 sec) |
|
|
MySQL [test]> insert into t3 values (0, 4); |
Query OK, 1 row affected (0.04 sec) |
|
|
MySQL [test]> insert into t3 values (0, 5); |
Query OK, 1 row affected (0.07 sec) |
|
|
MySQL [test]> insert into t3 values (0, 6); |
Query OK, 1 row affected (0.04 sec) |
mxs_adapter output
/mxs_adapter -h 172.21.0.7 -P 4001 -u cdcuser -p cdc -r 5 -n test t3 |
2 rows and 0 transactions inserted in 5.19347 seconds. GTID = 0-1-44 |
4 rows and 2 transactions inserted in 453.084 seconds. GTID = 0-1-46 |
3 rows and 1 transactions inserted in 5.1652 seconds. GTID = 0-1-47 |
6 rows and 2 transactions inserted in 7.22207 seconds. GTID = 0-1-49 |
Data on columnstore side
MariaDB [test]> select * from t3;
|
+-----------+---------+
|
| a | b |
|
+-----------+---------+
|
| 0 | 1 | |
| 0 | 4673075 | |
| 0 | 2 | |
| 35011 | 2 | |
| 0 | 3 | |
| 15905396 | 3 | |
| 0 | 4 | |
| 0 | 4 | |
| 553692535 | 4 | |
| 0 | 5 | |
| 0 | 5 | |
| 553649421 | 5 | |
| 0 | 6 | |
| 0 | 6 | |
| 889194386 | 6 | |
+-----------+---------+
|
15 rows in set (0.03 sec) |
Note the duplicate and ghost entries