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https://issues.apache.org/jira/browse/SENTRY-2024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16246286#comment-16246286
]
Na Li commented on SENTRY-2024:
-------------------------------
my database and table charset is latin1. innodb_large_prefix is off
mysql> SELECT @@character_set_database, @@collation_database;
+--------------------------+----------------------+
| @@character_set_database | @@collation_database |
+--------------------------+----------------------+
| latin1 | latin1_swedish_ci |
+--------------------------+----------------------+
1 row in set (0.01 sec)
mysql> SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
-> information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA
-> WHERE CCSA.collation_name = T.table_collation
-> AND T.table_schema = "sentryTest3"
-> AND T.table_name = "AUTHZ_PATHS_MAPPING";
+--------------------+
| character_set_name |
+--------------------+
| latin1 |
+--------------------+
1 row in set (0.02 sec)
mysql> SHOW GLOBAL VARIABLES LIKE 'innodb_large%';
+---------------------+-------+
| Variable_name | Value |
+---------------------+-------+
| innodb_large_prefix | OFF |
+---------------------+-------+
1 row in set (0.01 sec)
> Specify Char Set for AUTHZ_OBJ_NAME
> -----------------------------------
>
> Key: SENTRY-2024
> URL: https://issues.apache.org/jira/browse/SENTRY-2024
> Project: Sentry
> Issue Type: Bug
> Components: Sentry
> Affects Versions: 2.0.0
> Reporter: Na Li
> Assignee: Na Li
> Priority: Critical
> Attachments: SENTRY-2024.001.patch, SENTRY-2024.001.patch,
> SENTRY-2024.001.patch, SENTRY-2024.002.patch, SENTRY-2024.002.patch
>
>
> AUTHZ_OBJ_NAME has (384) chars. It is constructed by sentry from notification
> event as {color:red}DB_NAME + "." + TBL_NAME{color}. To be consistent with
> hive, sentry should use the same char set as what's used by DB_NAME and
> TBL_NAME
> Besides, if its table char set is utf8, the constrain AUTHZOBJNAME will have
> error "Specified key was too long; max key length is 767 bytes" for mysql.
> The solution is to specify the char set for this field, so it works for mysql
> regardless the char set of its table or DB.
> Reference:
> 1) CREATE TABLE AUTHZ_PATHS_MAPPING
> (
> AUTHZ_OBJ_ID BIGINT NOT NULL generated always as identity (start with 1),
> AUTHZ_OBJ_NAME VARCHAR({color:red}384{color}),
> CREATE_TIME_MS BIGINT NOT NULL
> );
> CREATE UNIQUE INDEX AUTHZOBJNAME ON AUTHZ_PATHS_MAPPING
> ({color:red}AUTHZ_OBJ_NAME{color});
> 2) AUTHZ_OBJ_NAME is constructed by sentry from notification event as
> DB_NAME + "." + TBL_NAME. To be consistent with hive, sentry should use the
> same char set as what's used by DB_NAME and TBL_NAME in
> NotificationProcessor.processAlterTable().
> 3) hive uses latin1 as default charset for notification event.
> CREATE TABLE IF NOT EXISTS `NOTIFICATION_LOG`
> (
> `NL_ID` BIGINT(20) NOT NULL,
> `EVENT_ID` BIGINT(20) NOT NULL,
> `EVENT_TIME` INT(11) NOT NULL,
> `EVENT_TYPE` varchar(32) NOT NULL,
> `DB_NAME` varchar(128),
> `TBL_NAME` varchar(128),
> `MESSAGE` mediumtext,
> PRIMARY KEY (`NL_ID`)
> ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
> 4) actual installation shows both fields are in latin1 char set.
> SHOW FULL COLUMNS FROM NOTIFICATION_LOG;
> +------------+--------------+-------------------+------+-----+---------+-------+---------------------------------+---------+
> | Field | Type | Collation | Null | Key | Default |
> Extra | Privileges | Comment |
> +------------+--------------+-------------------+------+-----+---------+-------+---------------------------------+---------+
> | NL_ID | bigint(20) | NULL | NO | PRI | NULL |
> | select,insert,update,references | |
> | EVENT_ID | bigint(20) | NULL | NO | | NULL |
> | select,insert,update,references | |
> | EVENT_TIME | int(11) | NULL | NO | | NULL |
> | select,insert,update,references | |
> | EVENT_TYPE | varchar(32) | latin1_swedish_ci | NO | | NULL |
> | select,insert,update,references | |
> | DB_NAME | varchar(128) | latin1_swedish_ci | YES | | NULL |
> | select,insert,update,references | |
> | TBL_NAME | varchar(128) | latin1_swedish_ci | YES | | NULL |
> | select,insert,update,references | |
> | MESSAGE | mediumtext | latin1_swedish_ci | YES | | NULL |
> | select,insert,update,references | |
> +------------+--------------+-------------------+------+-----+---------+-------+---------------------------------+---------+
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