[MCOL-4917] Certain Extent Map operations doesn't scale well. - Jira

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Details

Type: New Feature
Status: Closed (View Workflow)
Priority: Critical
Resolution: Done
Affects Version/s: 5.6.2, 5.6.3, 6.1.1
Fix Version/s: 5.6.5, 6.4.1
Component/s: cpimport, ExeMgr, PrimProc
Labels:
- mcs_cs_amdocs

Sprint:
2021-14, 2021-15, 2021-16, 2021-17

Description

There is a major deficiency in parts of EM code that makes the operations slower. We need to profile and introduce lookup structures to speed up read/write ops in EM. ExtentMap::getDbRootHWMInfo() must be overloaded to serve multiple oids at a time. ExtentMap::setLocalHWM is called multiple times compacting journal into EM on MCS shutdown(save_brm presumably). setLocalHWM is utterly slow that forces systemd to kill save_brm on timeout.

Attachments

Issue Links

includes

MCOL-5089 Merge RBTree-based Extent Map with EM Index to remove scaleability slow-downs -develop5

Closed

MCOL-5090 Up-merge EMIndex + RBTree-based EM into develop-6

Closed

MCOL-5091 Up-merge RBTree-based EM into develop

Closed

is part of

MCOL-5313 Re-test new Exttent Map implementation

Closed

relates to

MCOL-4988 Table lock remained after DML failure due to cluster was in readonly mode

Open

Activity

People

Assignee:: Roman

Reporter:: Roman

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 2021-11-08 14:32

Updated:: 2022-11-18 10:48

Resolved:: 2022-05-16 11:20

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