[SPARK-4131] Merge HiveTmpFile.scala to SaveAsHiveFile.scala

[janewangfb]

What changes were proposed in this pull request?

The code is already merged to master:
#18975

This is a following up PR to merge HiveTmpFile.scala to SaveAsHiveFile.

How was this patch tested?

Build successfully

[gatorsmile]

ok to test

[SparkQA]

Test build #81730 has finished for PR 19221 at commit 0b8d47a.

• This patch fails PySpark unit tests.
• This patch merges cleanly.
• This patch adds no public classes.

[gatorsmile]

retest this please

[SparkQA]

Test build #81735 has finished for PR 19221 at commit 0b8d47a.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[gatorsmile]

LGTM

[gatorsmile]

Thanks! Merged to master.

[aoxiangcao]

i'm sorry if it right to ask here .i have some question when use 'insert overwrite directory /user/appUser/test'. first, i start the thrift by 'hdfs', and login into beeline with user 'appUser'. then, i run sql 'insert overwrite directory ....' , the job cannot move data from staging folder to destination folder. because the result file is own by 'hdfs',the folder '/user/appUser/test' is own by appUser. so permission denied. is something wrong?