Release Notes for MariaDB Enterprise ColumnStore 6.4.1

ColumnStore's systemd unit files use startup and shutdown timeouts that are too low, which can lead to race conditions during startup and shutdown. (MCOL-4775, MCOL-4867, MCOL-5105)

• The race conditions could cause the Extent Map to become corrupt.

• The race conditions could also cause the DMLProc process to repeatedly try to rollback the same transactions in a crash loop.

When a recursive CTE is executed with a ColumnStore table, the server crashes. (MCOL-4778)

• Starting with this release, when a recursive CTE is executed with a ColumnStore table, the ER_CHECK_NOT_IMPLEMENTED error code is raised to the client with the following message:

ERROR 1178 (42000): The storage engine for the table doesn't support Recursive CTE

When a disk-based JOIN is executed, ExeMgr can crash. (MCOL-5042)

When testS3Connection is executed, it does not check for permission to perform the s3:ListBucket action. (MCOL-4989)

When ColumnStore is down or starting up, the mcssystemready() function returns an inaccurate value. (MCOL-5065)

Internal installation scripts refer to legacy OAM components and can break some installations. (MCOL-5060)