Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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3.1.4
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None
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Database:
AWS RDS MariaDB 10.5.21 with RDS Proxy
Application:
SpringBoot 2.7
MariaDB Connector 3.1.4
Base docker image:
adoptopenjdk/openjdk11-openj9:jre
Description
We are encountering occasional NPE in production environment.
When our spring based application starts to create transaction and set auto commit to false (which is calling `Connection.setAutoCommit()`), NPE is thrown in https://github.com/mariadb-corporation/mariadb-connector-j/blob/3.1.4/src/main/java/org/mariadb/jdbc/message/server/OkPacket.java#L52C19-L52C19
Given line 51, `database` is possible to be null while in line 52 it's trying to invoke `database.isEmpty()`, therefore NPE is thrown.
In addition, may I ask why calling `Connection.setAutoCommit()` can result in having `StateChange.SESSION_TRACK_SCHEMA` in the OkPacket?
and in what situation `StateChange.SESSION_TRACK_SCHEMA` will be returned but the subsequent data will be null?
Attachments
Activity
Thanks Diego. Please let me know what I could help on troubleshooting.
May I know if we have an expected timeline on this correction? Thanks in advance.
I haven't been able to reproduce it, but i suspect this is because of RDS Proxy use.
Anyway, correction is easily done to avoid that, and this will be part of 3.3.2
available as 3.3.2-SNAPSHOT now (release will be during the next week):
<repositories>
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<repository>
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<id>sonatype-nexus-snapshots</id>
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<name>Sonatype Nexus Snapshots</name>
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<url>https://oss.sonatype.org/content/repositories/snapshots</url> |
</repository>
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</repositories>
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<dependencies>
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<dependency>
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<groupId>org.mariadb.jdbc</groupId>
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<artifactId>mariadb-java-client</artifactId>
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<version>3.3.2-SNAPSHOT</version> |
</dependency>
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</dependencies>
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Database can initially be null, but can be changed to some value. There is normally no way to changing that to null afterwhile, so implementation was designed that way. I need to identify why this case occurs first, but correction will be done whatever.