message PTabletWriterOpenRequest {
  required .doris.PUniqueId id = 1;
  required int64 index_id = 2;
  required int64 txn_id = 3;
  required .doris.POlapTableSchemaParam schema = 4;
  repeated .doris.PTabletWithPartition tablets = 5;
  required int32 num_senders = 6;
  required bool need_gen_rollup = 7;
  optional int64 load_mem_limit = 8;
  optional int64 load_channel_timeout_s = 9;
  optional bool is_high_priority = 10 [default = false];
  optional string sender_ip = 11 [default = ""];
  optional bool is_vectorized = 12 [default = false];
  optional int64 backend_id = 13 [default = -1];
  optional bool enable_profile = 14 [default = false];
  optional bool is_incremental = 15 [default = false];
  optional int64 txn_expiration = 16;
  optional bool write_file_cache = 17;
  optional int32 sender_id = 19;
}