Intermittent pt-table-checksum Issuing rollback() due to DESTROY without explicit disconnect()

Polyglot Projects Percona Toolkit
1

A few months ago I started getting intermittent errors from pt-table-checksum.

pt-table-checksum --nocheck-binlog-format --quiet

Starting checksum ...

Issuing rollback() due to DESTROY without explicit disconnect() of DBD::mysql::db handle ;host=localhost;mysql_read_default_group=client at /usr/bin/pt-table-checksum line 5566.
06-01T11:17:43 Error checksumming table schema.table: DBD::mysql::st execute failed: Server has gone away [for Statement "SHOW MASTER STATUS"] at /usr/bin/pt-table-checksum line 5566.

            TS ERRORS  DIFFS     ROWS  DIFF_ROWS  CHUNKS SKIPPED    TIME TABLE
06-01T11:17:43      1      0       52          0       1       0   0.060 schema.table

This is happening with MySQL 8.0.33 and Pecona Toolkit 3.5.2.

The MySQL server hasn’t actually gone away. The server and pt-table-checksum are running in the same host.

Any ideas as to what might be causing this?

2

Just started happening for me today as well but I upgraded everything a couple weeks ago from a 8.0.2x to 8.0.33. I see .34 is out now so maybe it’s a known bug.

3

Just started happening for me today as well