pingcap/tidb

use external storage to reduce the memory space usage of some executors

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#14.392 aperta il 8 gen 2020

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epic/memory-managementhelp wantedsig/executiontype/enhancement

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Descrizione

Feature Request

Is your feature request related to a problem? Please describe:

As the title says.

Describe the feature you'd like:

issue difficulty assignee PRs
[ ] #TODO Use external storage for Index Merge Join hard help wanted N/A
[ ] #14675 implement grace hash join for Hash Join to avoid OOM of hash table hard help wanted N/A
[ ] #14413 Use external storage for Hash Aggregation hard help wanted N/A
[ ] #14395 Use external storage for Distinct hard help wanted N/A
[x] #12431 Use external storage for Sort medium @wshwsh12 #13718, #14279
[ ] #TODO Use external storage for Window Function medium help wanted N/A
[ ] #TODO Compare between row-based and vectorized external storage format for different executors hard help wanted N/A

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy:

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