Github user lw-lin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/14280#discussion_r71477795
  
    --- Diff: 
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala 
---
    @@ -64,14 +67,19 @@ class SQLQuerySuite extends QueryTest with SQLTestUtils 
with TestHiveSingleton {
       import spark.implicits._
     
       test("script") {
    -    val df = Seq(("x1", "y1", "z1"), ("x2", "y2", "z2")).toDF("c1", "c2", 
"c3")
    -    df.createOrReplaceTempView("script_table")
    -    val query1 = sql(
    -      """
    -        |SELECT col1 FROM (from(SELECT c1, c2, c3 FROM script_table) 
tempt_table
    -        |REDUCE c1, c2, c3 USING 'bash src/test/resources/test_script.sh' 
AS
    -        |(col1 STRING, col2 STRING)) script_test_table""".stripMargin)
    -    checkAnswer(query1, Row("x1_y1") :: Row("x2_y2") :: Nil)
    +    if (testCommandAvailable("bash") && testCommandAvailable("echo | awk 
'{print $0}'")) {
    +      val df = Seq(("x1", "y1", "z1"), ("x2", "y2", "z2")).toDF("c1", 
"c2", "c3")
    +      df.createOrReplaceTempView("script_table")
    +      val query1 = sql(
    +        """
    +          |SELECT col1 FROM (from(SELECT c1, c2, c3 FROM script_table) 
tempt_table
    +          |REDUCE c1, c2, c3 USING 'bash 
src/test/resources/test_script.sh' AS
    +          |(col1 STRING, col2 STRING)) script_test_table""".stripMargin)
    +      checkAnswer(query1, Row("x1_y1") :: Row("x2_y2") :: Nil)
    +    }
    +    else {
    +      assert(true)
    +    }
    --- End diff --
    
    The only change here was the `if` check; i.e.
    ```scala
    if (testCommandAvailable("bash") && testCommandAvailable("echo | awk 
'{print $0}'")) {
      // everything left unchanged
    }
    else {
      assert(true)
    }
    ```


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