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[Bug] Add dsv4 state_type branch to mooncake disaggregation #24878

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Merged
ch-wan merged 1 commit into from
May 10, 2026
+7 −2
Merged

[Bug] Add dsv4 state_type branch to mooncake disaggregation #24878

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9 changes: 7 additions & 2 deletions python/sglang/srt/disaggregation/mooncake/conn.py
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Original file line number Diff line number Diff line change
Expand Up @@ -995,8 +995,13 @@ def maybe_send_extra(
prefill_state_indices,
dst_state_data_ptrs,
)
elif state_type in ["swa", "nsa"]:
# SWA and NSA hybrid models do not support different TP sizes yet
elif state_type in ["swa", "nsa", "dsv4"]:
# SWA / NSA / DSv4 hybrid models do not support different TP sizes
# yet. (DSv4 carries a flat heterogeneous state pool of
# SWA + compress + indexer buffers; reusing this branch routes it
# through the same ``_send_kvcache_generic`` path that
# ``get_mla_kv_ptrs_with_pp`` already handles for compressed-MLA
# PP/MTP layouts.)
if (
target_rank_registration_info is not None
and not self.is_mla_backend
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