[CASSANALYTICS-181] - Support Sidecar behind a load balancer for time…#223
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bianca-stanciu29 wants to merge 1 commit into
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[CASSANALYTICS-181] - Support Sidecar behind a load balancer for time…#223bianca-stanciu29 wants to merge 1 commit into
bianca-stanciu29 wants to merge 1 commit into
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…-skew validation in coordinated writes
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…-skew validation in coordinated writes
Problem
Time-skew validation before a coordinated bulk write fans out HTTP calls directly to per-replica FQDNs resolved from the Cassandra token map. In deployments where Sidecar is fronted by a load balancer, those FQDNs are not routable from Spark executors, only the load balancer address is. This causes time-skew validation to fail at the start of every coordinated write job, blocking bulk writes entirely in load-balanced Sidecar deployments.
Solution
Add a SIDECAR_BEHIND_LOAD_BALANCER writer option (default: false). When true, time-skew validation skips the per-replica fan-out and routes through the preconfigured load balancer contact points instead