avantgardnerio commented on code in PR #93:
URL: https://github.com/apache/arrow-ballista/pull/93#discussion_r929070337
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ballista/rust/scheduler/src/flight_sql.rs:
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@@ -0,0 +1,402 @@
+use std::collections::HashMap;
+use std::sync::{Arc, Mutex};
+use std::time::Duration;
+use arrow_flight::{FlightData, FlightDescriptor, FlightEndpoint, FlightInfo,
Location, Ticket};
+use arrow_flight::flight_descriptor::DescriptorType;
+use arrow_flight::flight_service_server::FlightService;
+use arrow_flight::sql::{ActionClosePreparedStatementRequest,
ActionCreatePreparedStatementRequest, ActionCreatePreparedStatementResult,
CommandGetCatalogs, CommandGetCrossReference, CommandGetDbSchemas,
CommandGetExportedKeys, CommandGetImportedKeys, CommandGetPrimaryKeys,
CommandGetSqlInfo, CommandGetTables, CommandGetTableTypes,
CommandPreparedStatementQuery, CommandPreparedStatementUpdate,
CommandStatementQuery, CommandStatementUpdate, SqlInfo, TicketStatementQuery};
+use arrow_flight::sql::server::FlightSqlService;
+use log::{debug, error};
+use tonic::{Response, Status, Streaming};
+
+use crate::scheduler_server::SchedulerServer;
+use datafusion_proto::protobuf::LogicalPlanNode;
+use ballista_core::{
+ serde::protobuf::{PhysicalPlanNode},
+};
+use ballista_core::config::BallistaConfig;
+use arrow_flight::SchemaAsIpc;
+use datafusion::arrow;
+use datafusion::arrow::datatypes::Schema;
+use datafusion::arrow::ipc::writer::{IpcDataGenerator, IpcWriteOptions};
+use datafusion::logical_expr::LogicalPlan;
+use tokio::time::sleep;
+use uuid::{Uuid};
+use crate::scheduler_server::event::QueryStageSchedulerEvent;
+use ballista_core::serde::protobuf::job_status;
+use ballista_core::serde::protobuf::JobStatus;
+use ballista_core::serde::protobuf;
+use prost::Message;
+
+#[derive(Clone)]
+pub struct FlightSqlServiceImpl {
+ server: SchedulerServer<LogicalPlanNode, PhysicalPlanNode>,
+ statements: Arc<Mutex<HashMap<Uuid, LogicalPlan>>>,
Review Comment:
It looks like I can store things trivially in `etcd` (or whatever backing
store) using `server.state.session_manager.state`?
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