Prefer a pile with a specific state

Below is an example of setting the balancing algorithm option that prefers a pile in a given state in the YDB SDK.

If the state is not set when setting the option, the SDK prefers the PRIMARY pile.

This option only makes sense if the cluster is operating in bridge mode. Otherwise, the SDK uses random choice balancing.

C++

Python

JavaScript

Java

Rust

PHP

Native SDK

userver

#include <ydb-cpp-sdk/client/driver/driver.h>

int main() {
  auto connectionString = std::string(std::getenv("YDB_CONNECTION_STRING"));

  auto driverConfig = NYdb::TDriverConfig(connectionString)
    .SetBalancingPolicy(NYdb::TBalancingPolicy::UsePreferablePileState(NYdb::EPileState::PRIMARY));

  NYdb::TDriver driver(driverConfig);
  // ...
  driver.Stop(true);
  return 0;
}

This functionality is not currently supported.

Track progress or vote for Rust SDK support: ydb-rs-sdk#491

This functionality is not currently supported.

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