[GitHub] [hive] wangyum commented on a change in pull request #2878: HIVE-24893: Add UploadData and DownloadData to TCLIService.thrift

[GitBox <gi...@apache.org>]

wangyum commented on a change in pull request #2878:
URL: https://github.com/apache/hive/pull/2878#discussion_r784488086



##########
File path: service-rpc/if/TCLIService.thrift
##########
@@ -751,6 +751,52 @@ struct TGetTypeInfoResp {
   2: optional TOperationHandle operationHandle
 }
 
+// UploadData()
+//
+// UploadData data to table/path.
+struct TUploadDataReq {
+  // The session to execute the statement against
+  1: required TSessionHandle sessionHandle
+
+  // The table to be stored
+  2: optional string tableName
+
+  // The path to be stored
+  3: optional string path
+
+  // The data to be transferred
+  4: required binary values
+}
+
+struct TUploadDataResp {
+  1: required TStatus status
+  2: required TOperationHandle operationHandle
+}
+
+// DownloadData()
+//
+// Download data to JDBC client.
+struct TDownloadDataReq {
+  // The session to download data
+  1: required TSessionHandle sessionHandle
+
+  // The download table name
+  2: optional TPatternOrIdentifier tableName
+
+  // The download query
+  3: optional string query
+
+  // The download file format
+  4: optional string format

Review comment:
       For example, we want to download data as csv format, we don't need to care about the table format:
   ```scala
   spark.table("tableName").write.format("csv").option("dateFormat", "yyyy-MM-dd").save("/tmp/spark/download/sessionid/queryid")
   ```
   and then download data from `"/tmp/spark/download/sessionid/queryid"`.
   
   




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