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Support spill HashAgg to disk #25882

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5 tasks done
wshwsh12 opened this issue Jul 2, 2021 · 2 comments
Closed
5 tasks done

Support spill HashAgg to disk #25882

wshwsh12 opened this issue Jul 2, 2021 · 2 comments
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@wshwsh12
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type/enhancement The issue or PR belongs to an enhancement.

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@wshwsh12
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wshwsh12 commented Jul 2, 2021 •
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Project Tracking for Support spill HashAgg to disk

Background

Feature Request
At present, HashAgg cannot spill to disk, which means that large joins that use HashAgg use a huge amount of memory and can trigger OOM.

Plan
@wshwsh12 wshwsh12 added the type/enhancement The issue or PR belongs to an enhancement. label Jul 2, 2021
@wshwsh12 wshwsh12 self-assigned this Jul 2, 2021
@tisonkun
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So what's the different between this issue and #22611? Shall we close that one as superseded by this one? From my perspective they are just the same.

@tisonkun
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BTW you can create issues to track subtasks instead of just link PRs since you may have multiple PRs to one topic but exactly one issue for that topic.

@tisonkun tisonkun mentioned this issue Jul 11, 2021
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