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Disk based hash joins meta thread #39

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marsupialtail opened this issue Feb 23, 2023 · 1 comment

Owner

marsupialtail commented Feb 23, 2023

@savebuffer

Steps:

Add C++ build infrastructure for Pyarrow plugins.
Support disk spilling via refactoring: https://github.com/apache/arrow/pull/13669/files#diff-8099df49024baabc838e5615bbf8403232678172e089828efe631b99f8adba54
Modify above to keep the hash table in memory and only keep disk offsets in memory.
Write C++ plugin for random row lookups in streaming disk-based hash join
Test and brag.

Owner Author

marsupialtail commented Apr 4, 2023

Step 1 is done.

One more step needed is to first add bloom filters for the probe side.

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