[data] Fix O(n^2) issues in simple_block sort #19543
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ericl
commented
Oct 20, 2021
| @@ -286,3 +300,20 @@ def merge_sorted_blocks( | |||
| indices = pyarrow.compute.sort_indices(ret, sort_keys=key) | |||
| ret = ret.take(indices) | |||
| return ret, ArrowBlockAccessor(ret).get_metadata(None) | |||
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| def _copy_table(table: "pyarrow.Table") -> "pyarrow.Table": | |||
ericl
commented
Oct 20, 2021
jjyao
approved these changes
Oct 20, 2021
ericl
added
the
tests-ok
scv119
approved these changes
Oct 21, 2021
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Why are these changes needed?
ray.data.range(int(100e6)).sort()is much faster after this change. This is a quick fix; we should profile these methods more carefully prior to moving out of experimental.