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  1. MariaDB Server
  2. MDEV-16546

System versioning setting to allow history modification

Details

    Description

      Add a session server variable @@system_versioning_insert_history which allows to use ROW_START and ROW_END columns in the INSERT (unless they are normal visible (in SELECT *) fields, they have to be explicitly specified in INSERT as any invisible fields are). And if @@secure_timestamp allows the current user to modify @@timestamp then he should be able to insert directly into ROW_START/ROW_END columns.

      The use case of this is to be able to dump the history with mysqldump and to load it back later (MDEV-16029). It provides a convenient way to have a row in the system versioned table with row_start=A and row_end=B. Without @@system_versioning_insert_history it can be achieved with

      set @@timestamp=A;
      		 
      insert t1 values (...);
      		 
      set @@timestamp=B;
      		 
      delete from t1 where ... -- a condition to match the row that was just inserted

      So this new feature does not provide any new functionality, but allows to load the history dump much faster than with timestamp manipulations as above. In particular it does not allow to do anything that wasn't possible to do before, it requires exactly the same set of privileges as the snippet above, and is subject to the same set of restrictions.

      Attachments

        Issue Links

          blocks

          Task - A task that needs to be done. MDEV-16029 mysqldump: dump and restore historical data

          • Major - Major loss of function.
          • Closed
          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29674 History modification inserts records into a wrong partition without warning

          • Major - Major loss of function.
          • Stalled

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29721 Inconsistency upon inserting history with visible system versioning columns

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29722 History modification requires specifying values for both period columns

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29732 mysqlbinlog produces syntactically incorrect output with system_versioning_insert_history

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29738 REPLACE under system_versioning_insert_history allows to change existing historical records

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29741 SHOW BINLOG EVENTS shows garbage with system_versioning_insert_history=on

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29750 Triggers can modify history

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29805 Attempt to insert into system versioning columns on old server may make slave data diverge

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29812 Confusing behavior upon ODKU trying to insert/modify history

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29813 REPLACE/IGNORE does not work with historical records in InnoDB

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29830 Assertion `table->versioned()' in THD::vers_insert_history_fast

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29837 Column privileges prevent from direct history insert but not from timestamp tampering

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open
          duplicates

          Task - A task that needs to be done. MDEV-16734 LOAD DATA and system_versioning_modify_history

          • Major - Major loss of function.
          • Closed
          includes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-16587 Vers: SQL sysvers_show SELECT fix

          • Major - Major loss of function.
          • Closed
          is blocked by

          Technical task - A technical task. MDEV-18727 System Versioning: optimize DML operation

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29833 CREATE ... SELECT system_versioned_table causes invalid defaults

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          is part of

          Task - A task that needs to be done. MDEV-29547 prepare 10.11.0 preview releases

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-22413 Server hangs upon UPDATE/DELETE on a view reading from versioned partitioned table

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29730 mysqldump --dump-history creates broken dump if there are precision-versioned tables

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29736 mysqldump sets system_versioning_insert_history=1 twice and doesn't restore previous value

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-29737 mysqldump doesn't check for --tz-utc when it accepts --dump-history

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          links to

          Web Link End user hitting problem in dba.stackexchange.com

          Activity

            Transition Time In Source Status Execution Times
            Aleksey Midenkov made transition -
            Open In Progress
            		5m 46s 1
            Aleksey Midenkov made transition -
            Stalled In Progress
            		319d 4h 42m 5
            Aleksey Midenkov made transition -
            In Progress In Review
            		41d 20h 58m 6
            Sergei Golubchik made transition -
            In Review Stalled
            		1186d 4h 49m 6
            Sergei Golubchik made transition -
            Stalled In Review
            		14h 38m 1
            Sergei Golubchik made transition -
            In Review In Testing
            		1d 5h 3m 1
            Elena Stepanova made transition -
            In Testing Stalled
            		33d 9h 17m 1
            Sergei Golubchik made transition -
            Stalled Closed
            		5d 16h 55m 1

            People

              serg Sergei Golubchik
              midenok Aleksey Midenkov
              Votes:
              8 Vote for this issue
              Watchers:
              17 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

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