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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2021/09/17 13:49:18 UTC
[GitHub] [incubator-doris] qzsee opened a new issue #6694: [Bug] If new group name is the same as old group name when mod table colocate group name, master ckpt npe may occur
qzsee opened a new issue #6694:
URL: https://github.com/apache/incubator-doris/issues/6694
### Search before asking
- [X] I had searched in the [issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and found no similar issues.
### Version
0.13.11
### What's Wrong?
```shell
mysql> alter table test set("colocate_with"="test01");
Query OK, 0 rows affected (0.02 sec)
mysql> show proc "/colocation_group";
+---------------+---------------+----------+------------+----------------+------------------------+----------+
| GroupId | GroupName | TableIds | BucketsNum | ReplicationNum | DistCols | IsStable |
+---------------+---------------+----------+------------+----------------+------------------------+----------+
| 191766.193070 | 191766_test01 | 191770 | 10 | 1 | bigint(20), bigint(20) | true |
+---------------+---------------+----------+------------+----------------+------------------------+----------+
1 row in set (0.02 sec)
mysql> show proc "/colocation_group/191766.193070";
+-------------+------------+
| BucketIndex | BackendIds |
+-------------+------------+
| 0 | 10003 |
| 1 | 11001 |
| 2 | 10003 |
| 3 | 11001 |
| 4 | 10003 |
| 5 | 11001 |
| 6 | 10003 |
| 7 | 11001 |
| 8 | 10003 |
| 9 | 11001 |
+-------------+------------+
10 rows in set (0.02 sec)
# 相同的SQL在执行一次
mysql> alter table test set("colocate_with"="test01");
Query OK, 0 rows affected (0.02 sec)
mysql> show proc "/colocation_group";
+---------------+---------------+----------+------------+----------------+------------------------+----------+
| GroupId | GroupName | TableIds | BucketsNum | ReplicationNum | DistCols | IsStable |
+---------------+---------------+----------+------------+----------------+------------------------+----------+
| 191766.193071 | 191766_test01 | 191770 | 10 | 1 | bigint(20), bigint(20) | false |
+---------------+---------------+----------+------------+----------------+------------------------+----------+
1 row in set (0.01 sec)
mysql> show proc "/colocation_group/191766.193071"; # BucketIndex | BackendIds 信息却没了.....
Empty set (0.01 sec)
```
In this case, a bug is triggered.
Obviously, in the variable `group2BackendsPerBucketSeq` without this information.
When the master does ckpt, this bug will throw npe and ckpt will not work. The number of databases in BDB continues to rise
### What You Expected?
fix this bug
### How to Reproduce?
_No response_
### Anything Else?
_No response_
### Are you willing to submit PR?
- [X] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
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[GitHub] [incubator-doris] morningman closed issue #6694: [Bug] If new group name is the same as old group name when mod table colocate group name, the group has been in an unstable state
Posted by GitBox <gi...@apache.org>.
morningman closed issue #6694:
URL: https://github.com/apache/incubator-doris/issues/6694
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