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[PD] Abort unbootstrapped prefill requests through timeout (#6685)

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Signed-off-by: Shangming Cai <caishangming@linux.alibaba.com>
This commit is contained in:
shangmingc
2025-05-28 15:40:54 +08:00
committed by GitHub
parent c25231c679
commit b1c8d4e9f3
1 changed files with 23 additions and 5 deletions
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28
python/sglang/srt/disaggregation/mooncake/conn.py
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@@ -168,6 +168,9 @@ class MooncakeKVManager(BaseKVManager):
min(max(1, cpu_count // 8), 8),
)
)
self.bootstrap_time_out = get_int_env_var(
"SGLANG_DISAGGREGATION_BOOTSTRAP_TIMEOUT", 30
)
elif self.disaggregation_mode == DisaggregationMode.DECODE:
self.heartbeat_failures = {}
self.session_pool = defaultdict(requests.Session)
@@ -351,7 +354,7 @@ class MooncakeKVManager(BaseKVManager):
if req.mooncake_session_id in self.failed_sessions:
self.record_failure(
kv_chunk.room,
f"Decode instance could be dead, {req.mooncake_session_id} failed due to multiple errors",
f"Decode instance could be dead, remote mooncake session {req.mooncake_session_id} is not alive",
)
self.update_status(kv_chunk.room, KVPoll.Failed)
self.sync_status_to_decode_endpoint(
@@ -447,7 +450,8 @@ class MooncakeKVManager(BaseKVManager):
kv_chunk.room not in self.request_status
or self.check_status(kv_chunk.room) == KVPoll.Success
):
self.transfer_infos.pop(kv_chunk.room)
if kv_chunk.room in self.transfer_infos:
self.transfer_infos.pop(kv_chunk.room)
except queue.Empty:
continue
@@ -630,7 +634,8 @@ class MooncakeKVManager(BaseKVManager):
possible_affected_rooms = self.addr_to_rooms_tracker.get(
failed_bootstrap_addr, []
)
del self.addr_to_rooms_tracker[failed_bootstrap_addr]
if failed_bootstrap_addr in self.addr_to_rooms_tracker:
del self.addr_to_rooms_tracker[failed_bootstrap_addr]
# Report the requests associated with the failed bootstrap addr and mark their status as KVPoll.Failed
affected_rooms = []
@@ -660,6 +665,7 @@ class MooncakeKVSender(BaseKVSender):
self.kv_mgr.update_status(bootstrap_room, KVPoll.Bootstrapping)
self.aux_index = None
self.bootstrap_server_url = bootstrap_addr
self.init_time = time.time()
self.conclude_state = None
# inner state
self.curr_idx = 0
@@ -694,13 +700,24 @@ class MooncakeKVSender(BaseKVSender):
status = self.kv_mgr.check_status(self.bootstrap_room)
if status in (KVPoll.Success, KVPoll.Failed):
self.conclude_state = status
elif status == KVPoll.Bootstrapping:
now = time.time()
elapsed = now - self.init_time
if elapsed >= self.kv_mgr.bootstrap_time_out:
self.kv_mgr.record_failure(
self.bootstrap_room,
f"Request {self.bootstrap_room} timed out after {elapsed:.1f}s in KVPoll.Bootstrapping",
)
self.conclude_state = KVPoll.Failed
return KVPoll.Failed
return status
else:
return self.conclude_state
def clear(self) -> None:
self.kv_mgr.request_status.pop(self.bootstrap_room)
if self.bootstrap_room in self.kv_mgr.request_status:
self.kv_mgr.request_status.pop(self.bootstrap_room)
def failure_exception(self):
self.clear()
@@ -956,7 +973,8 @@ class MooncakeKVReceiver(BaseKVReceiver):
return self.conclude_state
def clear(self) -> None:
self.kv_mgr.request_status.pop(self.bootstrap_room)
if self.bootstrap_room in self.kv_mgr.request_status:
self.kv_mgr.request_status.pop(self.bootstrap_room)
def failure_exception(self):
self.clear()