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  1. MariaDB Server
  2. MDEV-26292

mysqldump freezes hangs at "Releasing Savepoint"

Details

    • Bug
    • Status: Closed (View Workflow)
    • Critical
    • Resolution: Not a Bug
    • 10.5.11
    • N/A
    • Backup
    • None
    • Ubuntu 18.04 64bit

    Description

      command:

      mysqldump -v -f --max_allowed_packet=1G --skip-log-queries --add-locks --single-transaction --dump-date --events --flush-logs --quick --opt --routines --triggers --log-error=/tmp/log.txt --result_file=/tmp/zgx.sql zgx

      Last part of log output

      – Sending SELECT query...
      – Retrieving rows...
      – Rolling back to savepoint sp...
      – Retrieving table structure for table zgx_zorgovereenkomsten_documenten_audit...
      – Sending SELECT query...
      – Retrieving rows...
      – Rolling back to savepoint sp...
      – Retrieving table structure for table zgx_zorgprofielen_wlz...
      – Sending SELECT query...
      – Retrieving rows...
      – Rolling back to savepoint sp...
      – Retrieving table structure for table zgx_zorgverzekeraars...
      – Sending SELECT query...
      – Retrieving rows...
      – Rolling back to savepoint sp...
      – Retrieving table structure for table zgx_zorgverzekeraars_audit...
      – Sending SELECT query...
      – Retrieving rows...
      – Rolling back to savepoint sp...
      – Releasing savepoint...

      CPU is now 100% and runs forever

      Attachments

        Activity

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          vincent.lemoine@iwa-consult.nl V H Lemoine created issue -
          vincent.lemoine@iwa-consult.nl V H Lemoine added a comment -

          dump data only works

          mysqldump -v --no-create-info --single-transaction zgx > /backup/zgx_data.sql

          dump create info without data also works

          mysqldump -v -d -R --triggers --result_file=/backup/zgx_ddl.sql zgx

          vincent.lemoine@iwa-consult.nl V H Lemoine added a comment - dump data only works mysqldump -v --no-create-info --single-transaction zgx > /backup/zgx_data.sql dump create info without data also works mysqldump -v -d -R --triggers --result_file=/backup/zgx_ddl.sql zgx
          vincent.lemoine@iwa-consult.nl V H Lemoine added a comment - - edited

          mysqldump -v --dump-date --events --routines --triggers --result-file=/tmp/zgx.sql zgx

          with --events causes 100% cpu and freezes

          last part of log:

          – Sending SELECT query...
          – Retrieving rows...
          – Retrieving table structure for table zgx_zorgverzekeraars_audit...
          – Sending SELECT query...
          – Retrieving rows...
          ^C

          mysqldump -v --dump-date --routines --triggers --result-file=/tmp/zgx.sql zgx

          without --events runs ok

          last part of log:

          – Retrieving view structure for table zgx_zorgprofielen_wlz...
          – It's base table, skipped
          – Retrieving view structure for table zgx_zorgverzekeraars...
          – It's base table, skipped
          – Retrieving view structure for table zgx_zorgverzekeraars_audit...
          – It's base table, skipped
          – Disconnecting from 127.0.0.1...

          mysqldump -v -d -R --events --triggers --result_file=/backup/zgx_ddl.sql zgx

          running mysqldump without data (DDL only) with --events also freezes

          mysqldump -v -d --events --result_file=/backup/zgx_ddl.sql zgx

          dumping --events only causes freeze and 100% cpu

          vincent.lemoine@iwa-consult.nl V H Lemoine added a comment - - edited mysqldump -v --dump-date --events --routines --triggers --result-file=/tmp/zgx.sql zgx with --events causes 100% cpu and freezes last part of log: – Sending SELECT query... – Retrieving rows... – Retrieving table structure for table zgx_zorgverzekeraars_audit... – Sending SELECT query... – Retrieving rows... ^C mysqldump -v --dump-date --routines --triggers --result-file=/tmp/zgx.sql zgx without --events runs ok last part of log: – Retrieving view structure for table zgx_zorgprofielen_wlz... – It's base table, skipped – Retrieving view structure for table zgx_zorgverzekeraars... – It's base table, skipped – Retrieving view structure for table zgx_zorgverzekeraars_audit... – It's base table, skipped – Disconnecting from 127.0.0.1... mysqldump -v -d -R --events --triggers --result_file=/backup/zgx_ddl.sql zgx running mysqldump without data (DDL only) with --events also freezes mysqldump -v -d --events --result_file=/backup/zgx_ddl.sql zgx dumping --events only causes freeze and 100% cpu
          vincent.lemoine@iwa-consult.nl V H Lemoine added a comment -

          after updating the last modified event and rerun
          mysqldump -v -d --events --result_file=/tmp/events.sql zgx, the mysqldump runs ok.

          So it seemed the problem is caused by an incorrectly saved event.

          vincent.lemoine@iwa-consult.nl V H Lemoine added a comment - after updating the last modified event and rerun mysqldump -v -d --events --result_file=/tmp/events.sql zgx , the mysqldump runs ok. So it seemed the problem is caused by an incorrectly saved event.
          vincent.lemoine@iwa-consult.nl V H Lemoine added a comment -

          Please close this issue.

          vincent.lemoine@iwa-consult.nl V H Lemoine added a comment - Please close this issue.
          anel Anel Husakovic made changes -
          Field Original Value New Value
          Assignee Anel Husakovic [ anel ]
          anel Anel Husakovic made changes -
          Fix Version/s N/A [ 14700 ]
          Resolution Not a Bug [ 6 ]
          Status Open [ 1 ] Closed [ 6 ]
          serg Sergei Golubchik made changes -
          Workflow MariaDB v3 [ 124040 ] MariaDB v4 [ 159556 ]

          People

            anel Anel Husakovic
            vincent.lemoine@iwa-consult.nl V H Lemoine
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            Dates

              Created:
              Updated:
              Resolved:

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