turboFei edited a comment on pull request #31054:
URL: https://github.com/apache/spark/pull/31054#issuecomment-755860978
Here is a test case(query contains '\n') which can not be covered by
runCliWithin:
```
runCliWithin(1.minute)("select 'test1';\n select 'test2';" -> "test2")
```
log:
```
11:35:00.383 pool-1-thread-1-ScalaTest-running-CliSuite INFO CliSuite: Cli
driver is booted. Waiting for expected answers.
11:35:01.104 Thread-6 INFO CliSuite: 2021-01-06 19:35:01.104 - stdout>
spark-sql> select 'test1';
11:35:01.104 Thread-6 INFO CliSuite: stdout> found expected output line 0:
'spark-sql> select 'test1';'
11:35:10.120 Thread-6 INFO CliSuite: 2021-01-06 19:35:10.12 - stdout> test1
11:35:10.121 Thread-7 INFO CliSuite: 2021-01-06 19:35:10.121 - stderr> Time
taken: 8.987 seconds, Fetched 1 row(s)
11:35:10.151 Thread-6 INFO CliSuite: 2021-01-06 19:35:10.151 - stdout>
spark-sql> select 'test2';
11:35:10.220 Thread-6 INFO CliSuite: 2021-01-06 19:35:10.22 - stdout> test2
11:35:10.220 Thread-7 INFO CliSuite: 2021-01-06 19:35:10.22 - stderr> Time
taken: 0.068 seconds, Fetched 1 row(s)
11:35:10.443 Thread-6 INFO CliSuite: 2021-01-06 19:35:10.443 - stdout>
spark-sql>
11:36:00.390 pool-1-thread-1-ScalaTest-running-CliSuite ERROR CliSuite:
=======================
CliSuite failure output
=======================
Spark SQL CLI command line: ../../bin/spark-sql --master local
--driver-java-options -Dderby.system.durability=test --conf
spark.ui.enabled=false --hiveconf
javax.jdo.option.ConnectionURL=jdbc:derby:;databaseName=/Users/fwang12/ebay/apache-spark/target/tmp/spark-7c275c0c-fc8e-49c7-b643-18f20fe8ba51;create=true
--hiveconf
hive.exec.scratchdir=/Users/fwang12/ebay/apache-spark/target/tmp/spark-bb0fded2-1a25-45d2-9f78-16898f32aefc
--hiveconf conf1=conftest --hiveconf conf2=1 --hiveconf
hive.metastore.warehouse.dir=/Users/fwang12/ebay/apache-spark/target/tmp/spark-4901396f-9a7a-4299-b7fc-9cb3b24c46f4
Exception: java.util.concurrent.TimeoutException: Futures timed out after [1
minute]
Failed to capture next expected output " > select 'test2';" within
1 minute.
```
It seems that it is not better to transfer multiple queries one time, but
there is some UT like this:
https://github.com/apache/spark/blob/f9daf035f473fea12a2ee67428db8d78f29973d5/sql/hive-thriftserver/src/test/scala/org/apache/spark/sql/hive/thriftserver/CliSuite.scala#L542-L544
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