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https://issues.apache.org/jira/browse/ARROW-16389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-16389:
-----------------------------------
Labels: pull-request-available (was: )
> [C++] Support hash-join on larger than memory datasets
> ------------------------------------------------------
>
> Key: ARROW-16389
> URL: https://issues.apache.org/jira/browse/ARROW-16389
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Weston Pace
> Assignee: Sasha Krassovsky
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The current implementation of the hash-join node current queues in memory the
> hashtable, the entire build side input, and the entire probe side input (e.g.
> the entire dataset). This means the current implementation will run out of
> memory and crash if the input dataset is larger than the memory on the system.
> By spilling to disk when memory starts to fill up we can allow the hash-join
> node to process datasets larger than the available memory on the machine.
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