[MDEV-26868] Session tracking flag in OK_PACKET - Jira

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Details

Type: Bug
Status: Closed (View Workflow)
Priority: Blocker
Resolution: Fixed
Affects Version/s: 10.2(EOL), 10.3(EOL), 10.4(EOL), 10.5, 10.6, 10.7(EOL)
Fix Version/s: 10.2.41, 10.3.32, 10.4.22, 10.5.13, 10.6.5, 10.7.1
Component/s: Protocol
Labels:
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Description

There is a difference between mariadb and mysql concerning session state tracking.
MySQL OK_Packet server_status flag may have value SERVER_SESSION_STATE_CHANGED set *ONLY * when client has set capability CLIENT_SESSION_TRACK.
MariaDB may set value SERVER_SESSION_STATE_CHANGED whatever client CLIENT_SESSION_TRACK capability has been set.

This difference has impacts: Recent version of mysql java connector rely only on server status flag value SERVER_SESSION_STATE_CHANGED to read session state additional bytes. Connector then try to read bytes that doesn't exist in packet when a session state change (only workaround is to enable mysql connector option `trackSessionState`).

proposed patch joined (tested)

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MDEV-26868.patch
2 kB
2021-10-20 16:05

Activity

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Assignee:: Oleksandr Byelkin

Reporter:: Diego Dupin

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 2021-10-20 16:04

Updated:: 2021-11-16 11:02

Resolved:: 2021-10-26 13:36

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