MariaDB Maxscale抛出访问被拒绝，尽管用户ID/密码正确

数据库版本：10.2.14 Maxscale版本：2.4.6

• 应用程序正在使用jdbc驱动程序连接到数据库
• 允许userid1和userid2从任何位置连接，例如
• 若我们直接从应用服务器连接到数据库，我们并没有收到任何问题，并且连接成功建立，但当我们通过maxscale连接到数据库时，我们会收到间歇性访问拒绝错误
  注意：用户ID和密码是相同的，从第一天起永不更改

情景

userid1 : Connect to database via Maxscale with ID/Password throws Access Denied Error intermittently, sometimes connects successfully
Userid1 : Connect to database directly from application, works fine no issues
userid2 : Connect to database via Maxscale with ID/Password throws Access Denied Error intermittently, sometimes connects successfully
Userid2 : Connect to database directly from application, works fine no issues

Earlier Maxscale Version was 2.2.19 and we never faced issues.
From both (application & Maxscale) logs we can see only ACCESS DENIED errors for those id's.
What am unable to understand is 
1) Userid and Password never changed, so why we are receiving ACCESS DENIED when using Maxscale that too intermittently and no issue if we connect directly database.
2) IF Userid/Password passes wrongly then it should be always access denied, but in this case it's intermittently

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类似的行为在MariaDB Jira中也有报道。我建议在Jira问题上报告这些问题。

没有提到，抛出的错误是用户ID或密码不正确