Yang Jiandan issues

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                                            Yang Jiandan

killed by os when running mac m3max and 128G Mem

dan@MacBook-Pro grok-1 % python3.11 run.py INFO:jax._src.xla_bridge:Unable to initialize backend 'cuda': INFO:jax._src.xla_bridge:Unable to initialize backend 'rocm': module 'jaxlib.xla_extension' has no attribute 'GpuAllocatorConfig' INFO:jax._src.xla_bridge:Unable to initialize backend 'tpu': INTERNAL: Failed to open...

HIVE-25351: stddev(), stddev_pop() with CBO enable returning null

### What changes were proposed in this pull request? when cbo is enable ``` STDDEV_SAMP(x) → SQRT( CASE WHEN ((SUM(x * x) - SUM(x) * SUM(x) / COUNT(x)) < 0)...

tests failed