message: Add two additional reader datasets for auto-sharding
diff: @@ -43,9 +43,11 @@ constexpr char kNumWorkersAttrName[] = "num_workers";
  constexpr char kIndexAttrName[] = "index";
  constexpr char kAutoShardPolicyAttrName[] = "auto_shard_policy";
  -constexpr std::array<const char*, 4> kReaderDatasetOps = {
  +constexpr std::array<const char*, 6> kReaderDatasetOps = {
  "FixedLengthRecordDataset",
  "FixedLengthRecordDatasetV2",
  + "RecordIODataset",
  + "SSTableDataset",
  "TextLineDataset",
  "TFRecordDataset"
  };
  