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John-194
dbscan-python
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Reliability fixes: input validation, atomics, non-throwing scheduler
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John-194
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Sep 21, 2026
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Reliability fixes: input validation, atomics, non-throwing scheduler
#5
John-194
merged 13 commits into
master
John-194/dbscan-python:master
from
reliability-improvements
John-194/dbscan-python:reliability-improvements
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Commits
Commits on Sep 13, 2026
cleanup: return empty arrays for n==0 instead of reading items[0] out of bounds
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b54ad26
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sklearn: validate eps, min_samples and coordinate finiteness at the Python boundary
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cleanup: release the input array on error paths and check the output array allocations
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TSan: use std::atomic for unionFind and the bccp radius so spin-loop loads cannot be hoisted
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cleanup: serialise DBSCAN and scheduler start/stop with a module-level mutex
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TSan: assert the cell kd-trees exist instead of racily building them in hasEdge
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cleanup: seed the cell hash from a local mt19937 instead of reseeding the process RNG with time()
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cleanup: compute grid sort keys with the same division the cell hash uses
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daf6018
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TSan: publish the neighbour cache with a CAS instead of holding a mutex across the parallel region
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cleanup: assert the deque age_t CAS is lock-free at compile time
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cleanup: make the deque push non-throwing and run the right branch inline when full instead of aborting on overflow
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Commits on Sep 18, 2026
TSan: read hash table slots with an atomic acquire load, matching the cas that publishes them
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Commits on Sep 19, 2026
TSan: write the cluster renumbering flags through std::atomic with relaxed stores
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