[MDEV-20950] Reduce size of record offsets - Jira

Details

Type: Task
Status: Closed (View Workflow)
Priority: Major
Resolution: Fixed
Fix Version/s: 10.2.31, 10.3.22, 10.4.12, 10.5.1
Component/s: Storage Engine - InnoDB
Labels:
None

Description

Now offsets have stack part and heap part which is used when stack part can not hold that big amount of fields in a table. `mem_heap_t` is used to very wide tables. And the idea is to replace this dichotomy with stack only wider array with optimized offset size: uint16_t instead of ulint.

Attachments

Issue Links

causes

MDEV-21595 typedef offset_t conflicts on AIX

Closed

MDEV-23198 mysqld crash when running REPLACE update

Closed

MDEV-30567 rec_get_offsets() is not optimal

Closed

is duplicated by

MDEV-19230 Get rid of dynamic part of record offsets

Closed

relates to

MDEV-21313 Introduce a class to store record offsets

Open

MDEV-18746 Reduce the amount of mem_heap_create() or malloc()

Open

MDEV-30720 Expert feedback on changing the type of rec_offs typedef and its impact on the code

Open

(2 relates to)

Activity

People

Assignee:: Eugene Kosov (Inactive)

Reporter:: Eugene Kosov (Inactive)

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 2019-11-02 21:51

Updated:: 2023-02-24 07:39

Resolved:: 2019-12-13 08:15

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