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CPP-935: Fix latency-aware policy #502

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Merged
merged 1 commit into from
Mar 29, 2021
Merged

CPP-935: Fix latency-aware policy #502

merged 1 commit into from
Mar 29, 2021

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@mpenick mpenick commented Mar 29, 2021

Latency-aware policy update timer wasn't started on request processors.

CPP-935: Fix latency-aware policy
dfbe47c 
Latency-aware policy update timer wasn't started on request processors.
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mpenick commented Mar 29, 2021

Also, tested manually by running a query against a three node cluster then causing an artificial delay using traffic control:

tc qdisc add dev lo root handle 1: prio
tc qdisc add dev lo parent 1:3 handle 30: netem delay 1ms 
tc filter add dev lo protocol ip parent 1:0 prio 3 u32 \
   match ip dst 127.0.0.2 flowid 1:3

Watch logs for:

1617039588.003 [TRACE] (latency_aware_policy.cpp:105:virtual datastax::internal::core::Host::Ptr datastax::internal::core::LatencyAwarePolicy::LatencyAwareQueryPlan::compute_next()): Skipping 127.0.0.2 because latency is too high 4.312233

@mpenick mpenick merged commit ca4a2cd into master Mar 29, 2021
fsaporito pushed a commit to cloudian/cpp-driver that referenced this pull request May 9, 2023
@mpenick @fsaporito
CPP-935: Fix latency-aware policy (apache#502)
19ed69b 
Latency-aware policy update timer wasn't started on request processors.
@absurdfarce absurdfarce deleted the fix-latency-aware branch October 10, 2025 16:39
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