fn prepare_remote_write_context(
params: &RemoteWriteQuery,
query_ctx: QueryContext,
remote_write_version: &str,
) -> (String, Arc<QueryContext>, HistogramTimer)fn prepare_remote_write_context(
params: &RemoteWriteQuery,
query_ctx: QueryContext,
remote_write_version: &str,
) -> (String, Arc<QueryContext>, HistogramTimer)