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core: keep round_robin lb subchannel in TRANSIENT_FAILURE until becoming READY #6657
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voidzcy
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grpc:master
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voidzcy:bugfix/round_robin_lb_subchannel_state_transition
Apr 6, 2020
Merged
core: keep round_robin lb subchannel in TRANSIENT_FAILURE until becoming READY #6657
voidzcy
merged 9 commits into
grpc:master
from
voidzcy:bugfix/round_robin_lb_subchannel_state_transition
Apr 6, 2020
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…robin_lb_subchannel_state_transition
…ng into each subchannel's state.
voidzcy
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core: keep round_robin lb subchannel in TRANSIENT_FAILURE until becoming READY
core: keep round_robin lb in TRANSIENT_FAILURE until becoming READY
Apr 3, 2020
ejona86
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Apr 3, 2020
voidzcy
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core: keep round_robin lb in TRANSIENT_FAILURE until becoming READY
core: keep round_robin lb subchannel in TRANSIENT_FAILURE until becoming READY
Apr 3, 2020
ejona86
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Apr 3, 2020
dfawley
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Jan 15, 2021
…ing READY (grpc#6657) Make each subchannel created by RR stay in TRANSIENT_FAILURE state until READY. That is, each subchannel ignores consequent non-READY states after TRANSIENT_FAILURE.
zhangkun83
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…READY If all RR servers are unhealthy, it's possible that at least one connection is CONNECTING at every moment which causes RR to stay in CONNECTING. It's better to keep the TRANSIENT_FAILURE state in that case so that fail-fast RPCs can fail fast. The same changes have been made for RoundRobinLoadBalancer in grpc#6657
zhangkun83
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…READY (#7816) If all RR servers are unhealthy, it's possible that at least one connection is CONNECTING at every moment which causes RR to stay in CONNECTING. It's better to keep the TRANSIENT_FAILURE state in that case so that fail-fast RPCs can fail fast. The same changes have been made for RoundRobinLoadBalancer in #6657
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Avoid buffering RPCs when subchannel is CONNECTING after being TRANSIENT_FAILURE.
See #6650 for description of the issue. This PR fixes RR load balancer only.