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author | Cheng Lian <lian.cs.zju@gmail.com> | 2014-06-13 12:59:48 -0700 |
---|---|---|
committer | Michael Armbrust <michael@databricks.com> | 2014-06-13 12:59:48 -0700 |
commit | ac96d9657c9a9f89a455a1b671c059d896012d41 (patch) | |
tree | 4458ab91a13169575b9625e0b6fdcd5b96e21823 /sql/hive | |
parent | 1c2fd015b05b65abc83c4874ada825deac578af8 (diff) | |
download | spark-ac96d9657c9a9f89a455a1b671c059d896012d41.tar.gz spark-ac96d9657c9a9f89a455a1b671c059d896012d41.tar.bz2 spark-ac96d9657c9a9f89a455a1b671c059d896012d41.zip |
[SPARK-2094][SQL] "Exactly once" semantics for DDL and command statements
## Related JIRA issues
- Main issue:
- [SPARK-2094](https://issues.apache.org/jira/browse/SPARK-2094): Ensure exactly once semantics for DDL/Commands
- Issues resolved as dependencies:
- [SPARK-2081](https://issues.apache.org/jira/browse/SPARK-2081): Undefine output() from the abstract class Command and implement it in concrete subclasses
- [SPARK-2128](https://issues.apache.org/jira/browse/SPARK-2128): No plan for DESCRIBE
- [SPARK-1852](https://issues.apache.org/jira/browse/SPARK-1852): SparkSQL Queries with Sorts run before the user asks them to
- Other related issue:
- [SPARK-2129](https://issues.apache.org/jira/browse/SPARK-2129): NPE thrown while lookup a view
Two test cases, `join_view` and `mergejoin_mixed`, within the `HiveCompatibilitySuite` are removed from the whitelist to workaround this issue.
## PR Overview
This PR defines physical plans for DDL statements and commands and wraps their side effects in a lazy field `PhysicalCommand.sideEffectResult`, so that they are executed eagerly and exactly once. Also, as a positive side effect, now DDL statements and commands can be turned into proper `SchemaRDD`s and let user query the execution results.
This PR defines schemas for the following DDL/commands:
- EXPLAIN command
- `plan`: String, the plan explanation
- SET command
- `key`: String, the key(s) of the propert(y/ies) being set or queried
- `value`: String, the value(s) of the propert(y/ies) being queried
- Other Hive native command
- `result`: String, execution result returned by Hive
**NOTE**: We should refine schemas for different native commands by defining physical plans for them in the future.
## Examples
### EXPLAIN command
Take the "EXPLAIN" command as an example, we first execute the command and obtain a `SchemaRDD` at the same time, then query the `plan` field with the schema DSL:
```
scala> loadTestTable("src")
...
scala> val q0 = hql("EXPLAIN SELECT key, COUNT(*) FROM src GROUP BY key")
...
q0: org.apache.spark.sql.SchemaRDD =
SchemaRDD[0] at RDD at SchemaRDD.scala:98
== Query Plan ==
ExplainCommandPhysical [plan#11:0]
Aggregate false, [key#4], [key#4,SUM(PartialCount#6L) AS c_1#2L]
Exchange (HashPartitioning [key#4:0], 200)
Exchange (HashPartitioning [key#4:0], 200)
Aggregate true, [key#4], [key#4,COUNT(1) AS PartialCount#6L]
HiveTableScan [key#4], (MetastoreRelation default, src, None), None
scala> q0.select('plan).collect()
...
[ExplainCommandPhysical [plan#24:0]
Aggregate false, [key#17], [key#17,SUM(PartialCount#19L) AS c_1#2L]
Exchange (HashPartitioning [key#17:0], 200)
Exchange (HashPartitioning [key#17:0], 200)
Aggregate true, [key#17], [key#17,COUNT(1) AS PartialCount#19L]
HiveTableScan [key#17], (MetastoreRelation default, src, None), None]
scala>
```
### SET command
In this example we query all the properties set in `SQLConf`, register the result as a table, and then query the table with HiveQL:
```
scala> val q1 = hql("SET")
...
q1: org.apache.spark.sql.SchemaRDD =
SchemaRDD[7] at RDD at SchemaRDD.scala:98
== Query Plan ==
<SET command: executed by Hive, and noted by SQLContext>
scala> q1.registerAsTable("properties")
scala> hql("SELECT key, value FROM properties ORDER BY key LIMIT 10").foreach(println)
...
== Query Plan ==
TakeOrdered 10, [key#51:0 ASC]
Project [key#51:0,value#52:1]
SetCommandPhysical None, None, [key#55:0,value#56:1]), which has no missing parents
14/06/12 12:19:27 INFO scheduler.DAGScheduler: Submitting 1 missing tasks from Stage 5 (SchemaRDD[21] at RDD at SchemaRDD.scala:98
== Query Plan ==
TakeOrdered 10, [key#51:0 ASC]
Project [key#51:0,value#52:1]
SetCommandPhysical None, None, [key#55:0,value#56:1])
...
[datanucleus.autoCreateSchema,true]
[datanucleus.autoStartMechanismMode,checked]
[datanucleus.cache.level2,false]
[datanucleus.cache.level2.type,none]
[datanucleus.connectionPoolingType,BONECP]
[datanucleus.fixedDatastore,false]
[datanucleus.identifierFactory,datanucleus1]
[datanucleus.plugin.pluginRegistryBundleCheck,LOG]
[datanucleus.rdbms.useLegacyNativeValueStrategy,true]
[datanucleus.storeManagerType,rdbms]
scala>
```
### "Exactly once" semantics
At last, an example of the "exactly once" semantics:
```
scala> val q2 = hql("CREATE TABLE t1(key INT, value STRING)")
...
q2: org.apache.spark.sql.SchemaRDD =
SchemaRDD[28] at RDD at SchemaRDD.scala:98
== Query Plan ==
<Native command: executed by Hive>
scala> table("t1")
...
res9: org.apache.spark.sql.SchemaRDD =
SchemaRDD[32] at RDD at SchemaRDD.scala:98
== Query Plan ==
HiveTableScan [key#58,value#59], (MetastoreRelation default, t1, None), None
scala> q2.collect()
...
res10: Array[org.apache.spark.sql.Row] = Array([])
scala>
```
As we can see, the "CREATE TABLE" command is executed eagerly right after the `SchemaRDD` is created, and referencing the `SchemaRDD` again won't trigger a duplicated execution.
Author: Cheng Lian <lian.cs.zju@gmail.com>
Closes #1071 from liancheng/exactlyOnceCommand and squashes the following commits:
d005b03 [Cheng Lian] Made "SET key=value" returns the newly set key value pair
f6c7715 [Cheng Lian] Added test cases for DDL/command statement RDDs
1d00937 [Cheng Lian] Makes SchemaRDD DSLs work for DDL/command statement RDDs
5c7e680 [Cheng Lian] Bug fix: wrong type used in pattern matching
48aa2e5 [Cheng Lian] Refined SQLContext.emptyResult as an empty RDD[Row]
cc64f32 [Cheng Lian] Renamed physical plan classes for DDL/commands
74789c1 [Cheng Lian] Fixed failing test cases
0ad343a [Cheng Lian] Added physical plan for DDL and commands to ensure the "exactly once" semantics
Diffstat (limited to 'sql/hive')
6 files changed, 154 insertions, 78 deletions
diff --git a/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala b/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala index 9cd13f6ae0..96e0ec5136 100644 --- a/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala +++ b/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala @@ -15,8 +15,7 @@ * limitations under the License. */ -package org.apache.spark.sql -package hive +package org.apache.spark.sql.hive import java.io.{BufferedReader, File, InputStreamReader, PrintStream} import java.util.{ArrayList => JArrayList} @@ -32,12 +31,13 @@ import org.apache.hadoop.hive.ql.session.SessionState import org.apache.spark.SparkContext import org.apache.spark.rdd.RDD +import org.apache.spark.sql._ import org.apache.spark.sql.catalyst.ScalaReflection import org.apache.spark.sql.catalyst.analysis.{Analyzer, OverrideCatalog} -import org.apache.spark.sql.catalyst.expressions.GenericRow import org.apache.spark.sql.catalyst.plans.logical._ import org.apache.spark.sql.catalyst.types._ -import org.apache.spark.sql.execution._ +import org.apache.spark.sql.execution.QueryExecutionException +import org.apache.spark.sql.execution.{Command => PhysicalCommand} /** * Starts up an instance of hive where metadata is stored locally. An in-process metadata data is @@ -71,14 +71,7 @@ class HiveContext(sc: SparkContext) extends SQLContext(sc) { /** * Executes a query expressed in HiveQL using Spark, returning the result as a SchemaRDD. */ - def hiveql(hqlQuery: String): SchemaRDD = { - val result = new SchemaRDD(this, HiveQl.parseSql(hqlQuery)) - // We force query optimization to happen right away instead of letting it happen lazily like - // when using the query DSL. This is so DDL commands behave as expected. This is only - // generates the RDD lineage for DML queries, but does not perform any execution. - result.queryExecution.toRdd - result - } + def hiveql(hqlQuery: String): SchemaRDD = new SchemaRDD(this, HiveQl.parseSql(hqlQuery)) /** An alias for `hiveql`. */ def hql(hqlQuery: String): SchemaRDD = hiveql(hqlQuery) @@ -164,7 +157,7 @@ class HiveContext(sc: SparkContext) extends SQLContext(sc) { /** * Runs the specified SQL query using Hive. */ - protected def runSqlHive(sql: String): Seq[String] = { + protected[sql] def runSqlHive(sql: String): Seq[String] = { val maxResults = 100000 val results = runHive(sql, 100000) // It is very confusing when you only get back some of the results... @@ -228,6 +221,7 @@ class HiveContext(sc: SparkContext) extends SQLContext(sc) { override val strategies: Seq[Strategy] = Seq( CommandStrategy(self), + HiveCommandStrategy(self), TakeOrdered, ParquetOperations, InMemoryScans, @@ -252,25 +246,7 @@ class HiveContext(sc: SparkContext) extends SQLContext(sc) { override lazy val optimizedPlan = optimizer(catalog.PreInsertionCasts(catalog.CreateTables(analyzed))) - override lazy val toRdd: RDD[Row] = { - def processCmd(cmd: String): RDD[Row] = { - val output = runSqlHive(cmd) - if (output.size == 0) { - emptyResult - } else { - val asRows = output.map(r => new GenericRow(r.split("\t").asInstanceOf[Array[Any]])) - sparkContext.parallelize(asRows, 1) - } - } - - logical match { - case s: SetCommand => eagerlyProcess(s) - case _ => analyzed match { - case NativeCommand(cmd) => processCmd(cmd) - case _ => executedPlan.execute().map(_.copy()) - } - } - } + override lazy val toRdd: RDD[Row] = executedPlan.execute().map(_.copy()) protected val primitiveTypes = Seq(StringType, IntegerType, LongType, DoubleType, FloatType, BooleanType, ByteType, @@ -298,7 +274,7 @@ class HiveContext(sc: SparkContext) extends SQLContext(sc) { struct.zip(fields).map { case (v, t) => s""""${t.name}":${toHiveStructString(v, t.dataType)}""" }.mkString("{", ",", "}") - case (seq: Seq[_], ArrayType(typ))=> + case (seq: Seq[_], ArrayType(typ)) => seq.map(v => (v, typ)).map(toHiveStructString).mkString("[", ",", "]") case (map: Map[_,_], MapType(kType, vType)) => map.map { @@ -314,10 +290,11 @@ class HiveContext(sc: SparkContext) extends SQLContext(sc) { * Returns the result as a hive compatible sequence of strings. For native commands, the * execution is simply passed back to Hive. */ - def stringResult(): Seq[String] = analyzed match { - case NativeCommand(cmd) => runSqlHive(cmd) - case ExplainCommand(plan) => executePlan(plan).toString.split("\n") - case query => + def stringResult(): Seq[String] = executedPlan match { + case command: PhysicalCommand => + command.sideEffectResult.map(_.toString) + + case other => val result: Seq[Seq[Any]] = toRdd.collect().toSeq // We need the types so we can output struct field names val types = analyzed.output.map(_.dataType) @@ -328,8 +305,8 @@ class HiveContext(sc: SparkContext) extends SQLContext(sc) { override def simpleString: String = logical match { - case _: NativeCommand => "<Executed by Hive>" - case _: SetCommand => "<Set Command: Executed by Hive, and noted by SQLContext>" + case _: NativeCommand => "<Native command: executed by Hive>" + case _: SetCommand => "<SET command: executed by Hive, and noted by SQLContext>" case _ => executedPlan.toString } } diff --git a/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveStrategies.scala b/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveStrategies.scala index ed6cd5a11d..0ac0ee9071 100644 --- a/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveStrategies.scala +++ b/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveStrategies.scala @@ -76,4 +76,12 @@ private[hive] trait HiveStrategies { Nil } } + + case class HiveCommandStrategy(context: HiveContext) extends Strategy { + def apply(plan: LogicalPlan): Seq[SparkPlan] = plan match { + case logical.NativeCommand(sql) => + NativeCommand(sql, plan.output)(context) :: Nil + case _ => Nil + } + } } diff --git a/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/hiveOperators.scala b/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/hiveOperators.scala index 29b4b9b006..a839231449 100644 --- a/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/hiveOperators.scala +++ b/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/hiveOperators.scala @@ -32,14 +32,15 @@ import org.apache.hadoop.hive.serde2.{ColumnProjectionUtils, Serializer} import org.apache.hadoop.io.Writable import org.apache.hadoop.mapred._ +import org.apache.spark import org.apache.spark.annotation.DeveloperApi import org.apache.spark.rdd.RDD import org.apache.spark.sql.catalyst.expressions._ import org.apache.spark.sql.catalyst.types.{BooleanType, DataType} import org.apache.spark.sql.execution._ import org.apache.spark.sql.hive._ -import org.apache.spark.{TaskContext, SparkException} import org.apache.spark.util.MutablePair +import org.apache.spark.{TaskContext, SparkException} /* Implicits */ import scala.collection.JavaConversions._ @@ -57,7 +58,7 @@ case class HiveTableScan( attributes: Seq[Attribute], relation: MetastoreRelation, partitionPruningPred: Option[Expression])( - @transient val sc: HiveContext) + @transient val context: HiveContext) extends LeafNode with HiveInspectors { @@ -75,7 +76,7 @@ case class HiveTableScan( } @transient - val hadoopReader = new HadoopTableReader(relation.tableDesc, sc) + val hadoopReader = new HadoopTableReader(relation.tableDesc, context) /** * The hive object inspector for this table, which can be used to extract values from the @@ -156,7 +157,7 @@ case class HiveTableScan( hiveConf.set(serdeConstants.LIST_COLUMNS, columnInternalNames) } - addColumnMetadataToConf(sc.hiveconf) + addColumnMetadataToConf(context.hiveconf) @transient def inputRdd = if (!relation.hiveQlTable.isPartitioned) { @@ -428,3 +429,26 @@ case class InsertIntoHiveTable( sc.sparkContext.makeRDD(Nil, 1) } } + +/** + * :: DeveloperApi :: + */ +@DeveloperApi +case class NativeCommand( + sql: String, output: Seq[Attribute])( + @transient context: HiveContext) + extends LeafNode with Command { + + override protected[sql] lazy val sideEffectResult: Seq[String] = context.runSqlHive(sql) + + override def execute(): RDD[spark.sql.Row] = { + if (sideEffectResult.size == 0) { + context.emptyResult + } else { + val rows = sideEffectResult.map(r => new GenericRow(Array[Any](r))) + context.sparkContext.parallelize(rows, 1) + } + } + + override def otherCopyArgs = context :: Nil +} diff --git a/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveComparisonTest.scala b/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveComparisonTest.scala index 357c7e654b..24c929ff74 100644 --- a/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveComparisonTest.scala +++ b/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveComparisonTest.scala @@ -24,6 +24,7 @@ import org.scalatest.{BeforeAndAfterAll, FunSuite, GivenWhenThen} import org.apache.spark.sql.Logging import org.apache.spark.sql.catalyst.planning.PhysicalOperation import org.apache.spark.sql.catalyst.plans.logical._ +import org.apache.spark.sql.catalyst.plans.logical.{NativeCommand => LogicalNativeCommand} import org.apache.spark.sql.catalyst.util._ import org.apache.spark.sql.hive.test.TestHive @@ -141,7 +142,7 @@ abstract class HiveComparisonTest // Hack: Hive simply prints the result of a SET command to screen, // and does not return it as a query answer. case _: SetCommand => Seq("0") - case _: NativeCommand => answer.filterNot(nonDeterministicLine).filterNot(_ == "") + case _: LogicalNativeCommand => answer.filterNot(nonDeterministicLine).filterNot(_ == "") case _: ExplainCommand => answer case plan => if (isSorted(plan)) answer else answer.sorted } diff --git a/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveCompatibilitySuite.scala b/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveCompatibilitySuite.scala index 3581617c26..ee194dbcb7 100644 --- a/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveCompatibilitySuite.scala +++ b/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveCompatibilitySuite.scala @@ -172,7 +172,12 @@ class HiveCompatibilitySuite extends HiveQueryFileTest with BeforeAndAfter { "case_sensitivity", // Flaky test, Hive sometimes returns different set of 10 rows. - "lateral_view_outer" + "lateral_view_outer", + + // After stop taking the `stringOrError` route, exceptions are thrown from these cases. + // See SPARK-2129 for details. + "join_view", + "mergejoins_mixed" ) /** @@ -476,7 +481,6 @@ class HiveCompatibilitySuite extends HiveQueryFileTest with BeforeAndAfter { "join_reorder3", "join_reorder4", "join_star", - "join_view", "lateral_view", "lateral_view_cp", "lateral_view_ppd", @@ -507,7 +511,6 @@ class HiveCompatibilitySuite extends HiveQueryFileTest with BeforeAndAfter { "merge1", "merge2", "mergejoins", - "mergejoins_mixed", "multigroupby_singlemr", "multi_insert_gby", "multi_insert_gby3", diff --git a/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveQuerySuite.scala b/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveQuerySuite.scala index 6c239b02ed..0d656c5569 100644 --- a/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveQuerySuite.scala +++ b/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveQuerySuite.scala @@ -17,9 +17,11 @@ package org.apache.spark.sql.hive.execution -import org.apache.spark.sql.Row -import org.apache.spark.sql.hive.test.TestHive._ +import scala.util.Try + import org.apache.spark.sql.hive.test.TestHive +import org.apache.spark.sql.hive.test.TestHive._ +import org.apache.spark.sql.{SchemaRDD, execution, Row} /** * A set of test cases expressed in Hive QL that are not covered by the tests included in the hive distribution. @@ -162,16 +164,60 @@ class HiveQuerySuite extends HiveComparisonTest { hql("SELECT * FROM src").toString } + private val explainCommandClassName = + classOf[execution.ExplainCommand].getSimpleName.stripSuffix("$") + + def isExplanation(result: SchemaRDD) = { + val explanation = result.select('plan).collect().map { case Row(plan: String) => plan } + explanation.size == 1 && explanation.head.startsWith(explainCommandClassName) + } + test("SPARK-1704: Explain commands as a SchemaRDD") { hql("CREATE TABLE IF NOT EXISTS src (key INT, value STRING)") + val rdd = hql("explain select key, count(value) from src group by key") - assert(rdd.collect().size == 1) - assert(rdd.toString.contains("ExplainCommand")) - assert(rdd.filter(row => row.toString.contains("ExplainCommand")).collect().size == 0, - "actual contents of the result should be the plans of the query to be explained") + assert(isExplanation(rdd)) + TestHive.reset() } + test("Query Hive native command execution result") { + val tableName = "test_native_commands" + + val q0 = hql(s"DROP TABLE IF EXISTS $tableName") + assert(q0.count() == 0) + + val q1 = hql(s"CREATE TABLE $tableName(key INT, value STRING)") + assert(q1.count() == 0) + + val q2 = hql("SHOW TABLES") + val tables = q2.select('result).collect().map { case Row(table: String) => table } + assert(tables.contains(tableName)) + + val q3 = hql(s"DESCRIBE $tableName") + assertResult(Array(Array("key", "int", "None"), Array("value", "string", "None"))) { + q3.select('result).collect().map { case Row(fieldDesc: String) => + fieldDesc.split("\t").map(_.trim) + } + } + + val q4 = hql(s"EXPLAIN SELECT key, COUNT(*) FROM $tableName GROUP BY key") + assert(isExplanation(q4)) + + TestHive.reset() + } + + test("Exactly once semantics for DDL and command statements") { + val tableName = "test_exactly_once" + val q0 = hql(s"CREATE TABLE $tableName(key INT, value STRING)") + + // If the table was not created, the following assertion would fail + assert(Try(table(tableName)).isSuccess) + + // If the CREATE TABLE command got executed again, the following assertion would fail + assert(Try(q0.count()).isSuccess) + } + test("parse HQL set commands") { // Adapted from its SQL counterpart. val testKey = "spark.sql.key.usedfortestonly" @@ -195,52 +241,69 @@ class HiveQuerySuite extends HiveComparisonTest { test("SET commands semantics for a HiveContext") { // Adapted from its SQL counterpart. val testKey = "spark.sql.key.usedfortestonly" - var testVal = "test.val.0" + val testVal = "test.val.0" val nonexistentKey = "nonexistent" - def fromRows(row: Array[Row]): Array[String] = row.map(_.getString(0)) + def rowsToPairs(rows: Array[Row]) = rows.map { case Row(key: String, value: String) => + key -> value + } clear() // "set" itself returns all config variables currently specified in SQLConf. - assert(hql("set").collect().size == 0) + assert(hql("SET").collect().size == 0) + + assertResult(Array(testKey -> testVal)) { + rowsToPairs(hql(s"SET $testKey=$testVal").collect()) + } - // "set key=val" - hql(s"SET $testKey=$testVal") - assert(fromRows(hql("SET").collect()) sameElements Array(s"$testKey=$testVal")) assert(hiveconf.get(testKey, "") == testVal) + assertResult(Array(testKey -> testVal)) { + rowsToPairs(hql("SET").collect()) + } hql(s"SET ${testKey + testKey}=${testVal + testVal}") - assert(fromRows(hql("SET").collect()) sameElements - Array( - s"$testKey=$testVal", - s"${testKey + testKey}=${testVal + testVal}")) assert(hiveconf.get(testKey + testKey, "") == testVal + testVal) + assertResult(Array(testKey -> testVal, (testKey + testKey) -> (testVal + testVal))) { + rowsToPairs(hql("SET").collect()) + } // "set key" - assert(fromRows(hql(s"SET $testKey").collect()) sameElements - Array(s"$testKey=$testVal")) - assert(fromRows(hql(s"SET $nonexistentKey").collect()) sameElements - Array(s"$nonexistentKey is undefined")) + assertResult(Array(testKey -> testVal)) { + rowsToPairs(hql(s"SET $testKey").collect()) + } + + assertResult(Array(nonexistentKey -> "<undefined>")) { + rowsToPairs(hql(s"SET $nonexistentKey").collect()) + } // Assert that sql() should have the same effects as hql() by repeating the above using sql(). clear() - assert(sql("set").collect().size == 0) + assert(sql("SET").collect().size == 0) + + assertResult(Array(testKey -> testVal)) { + rowsToPairs(sql(s"SET $testKey=$testVal").collect()) + } - sql(s"SET $testKey=$testVal") - assert(fromRows(sql("SET").collect()) sameElements Array(s"$testKey=$testVal")) assert(hiveconf.get(testKey, "") == testVal) + assertResult(Array(testKey -> testVal)) { + rowsToPairs(sql("SET").collect()) + } sql(s"SET ${testKey + testKey}=${testVal + testVal}") - assert(fromRows(sql("SET").collect()) sameElements - Array( - s"$testKey=$testVal", - s"${testKey + testKey}=${testVal + testVal}")) assert(hiveconf.get(testKey + testKey, "") == testVal + testVal) + assertResult(Array(testKey -> testVal, (testKey + testKey) -> (testVal + testVal))) { + rowsToPairs(sql("SET").collect()) + } - assert(fromRows(sql(s"SET $testKey").collect()) sameElements - Array(s"$testKey=$testVal")) - assert(fromRows(sql(s"SET $nonexistentKey").collect()) sameElements - Array(s"$nonexistentKey is undefined")) + assertResult(Array(testKey -> testVal)) { + rowsToPairs(sql(s"SET $testKey").collect()) + } + + assertResult(Array(nonexistentKey -> "<undefined>")) { + rowsToPairs(sql(s"SET $nonexistentKey").collect()) + } + + clear() } // Put tests that depend on specific Hive settings before these last two test, |