[Enhancement] Restrict mem size of one chunk #28287
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Fixes #issue
In the current exchange framework, a
Chunk
will be cached until 4096 lines before being sent. The actual memory size used is: number of BEs * Dop. For the large data type such asBitmap
, 1 row will be relatively large and will take up a lot of memory.What type of PR is this:
Checklist:
Bugfix cherry-pick branch check: